gmt.c File Reference

グラフィック用数学ライブラリ＆フィルタ More...

#include "gmt.h"
#include "jbxl_state.h"

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Functions
WSGraph	Laplacian (WSGraph vp, int mode)
WSGraph	xSobel (WSGraph vp)
FSGraph	fxSobel (FSGraph vp)
WSGraph	ySobel (WSGraph vp)
FSGraph	fySobel (FSGraph vp)
WSGraph	zSobel (WSGraph vp)
FSGraph	fzSobel (FSGraph vp)
WSGraph	xxSobel (WSGraph vp)
FSGraph	fxxSobel (FSGraph vp)
WSGraph	yySobel (WSGraph vp)
FSGraph	fyySobel (FSGraph vp)
WSGraph	zzSobel (WSGraph vp)
FSGraph	fzzSobel (FSGraph vp)
VSGraph	vNabra (WSGraph vp)
VSGraph	vfNabra (FSGraph vp)
WSGraph	Nabra (WSGraph vp)
FSGraph	fNabra (FSGraph vp)
VSGraph	curvature3D (FSGraph vp)
VSGraph	curvature (FSGraph vp)
WSGraph	curv2WSGraph (VSGraph xp)
WSGraph	WSCurve (WSGraph gx, int mode, int cc)
WSGraph	edge_enhance (WSGraph gd, int mode)
FMask	gauss_mask (double sig, int ms, int md)
WSGraph	imask (WSGraph xp, FMask mask)
WSGraph	median (WSGraph xp, int ms)
WSGraph	to2d (WSGraph gd, int mode)
WSGraph	euclid_distance (WSGraph vp, int *rr, int bc)
int	out_round (WSGraph vp, int x, int y, IRBound *rb, int mode)

Detailed Description

Version

3.0

Author

Fumi.Iseki (C)

Definition in file gmt.c.

Function Documentation

curv2WSGraph()

WSGraph curv2WSGraph

(

VSGraph

xp

)

WSGraph curv2WSGraph(VSGraph xp)

3次元曲率データから曲面の形状を判定する．

Parameters

xp	操作対象となる3次元曲率の入ったグラフィックデータ．

Returns

曲面の形状情報を代入した sWord型グラフィックデータ．

Note

曲面の形状の種類は
PEAK, PIT, SADDLE_RIDGE, SADDLE_VALLEY, NONE_SHAPE, MINIMAL, RIDGE, VALLEY, FLAT

Definition at line 1411 of file gmt.c.

{
    int  i;
    WSGraph vp;
    double  K, H;
    
    memset(&vp, 0, sizeof(WSGraph));
    if (xp.gp==NULL) {
        vp.state = JBXL_GRAPH_NODATA_ERROR;
        return vp;
    }
 
    vp = make_WSGraph(xp.xs, xp.ys, xp.zs);
    if (vp.gp==NULL) return vp;
 
    for (i=0; i<vp.xs*vp.ys*vp.zs; i++) {
        K = xp.gp[i].x;
        H = xp.gp[i].y;
        if      (K>0  && H<0)  vp.gp[i] = PEAK;
        else if (K>0  && H>0)  vp.gp[i] = PIT;
        else if (K<0  && H<0)  vp.gp[i] = SADDLE_RIDGE;
        else if (K<0  && H>0)  vp.gp[i] = SADDLE_VALLEY;
        else if (K>0  && H==0) vp.gp[i] = NONE_SHAPE;
        else if (K<0  && H==0) vp.gp[i] = MINIMAL;
        else if (K==0 && H<0)  vp.gp[i] = RIDGE;
        else if (K==0 && H>0)  vp.gp[i] = VALLEY;
        else if (K==0 && H==0) vp.gp[i] = FLAT;
    }
 
    return vp;
}

References FLAT, WSGraph::gp, VSGraph::gp, JBXL_GRAPH_NODATA_ERROR, make_WSGraph(), MINIMAL, NONE_SHAPE, PEAK, PIT, RIDGE, SADDLE_RIDGE, SADDLE_VALLEY, WSGraph::state, VALLEY, vector::x, WSGraph::xs, VSGraph::xs, vector::y, WSGraph::ys, VSGraph::ys, WSGraph::zs, and VSGraph::zs.

Referenced by WSCurve().

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curvature()

VSGraph curvature

(

FSGraph

vp

)

VSGraph curvature(FSGraph vp)

2Dグラフィックデータの3次元曲率を実数計算する．

Parameters

vp	計算対象となるグラフィックデータ構造体．

Returns

3次元曲率を代入した vector型グラフィックデータ(K,Hの2次元)．

Definition at line 1336 of file gmt.c.

{
    int   i;
    double K, H, d;
    double Ix, Ixx, Iy, Iyy, Ixy;
    FSGraph px, py, pxy, pxx, pyy;
    VSGraph pp;
 
    memset(&pp, 0, sizeof(VSGraph));
    if (vp.gp==NULL) {
        pp.state = JBXL_GRAPH_NODATA_ERROR;
        return pp;
    }
 
    if (vp.zs>1) {
        //fprintf(stderr,"CURVATURE: z dimension is > 1.\n");
        pp.state = JBXL_GRAPH_IVDARG_ERROR;
        return pp;
    }
 
    pp = make_VSGraph(vp.xs, vp.ys, vp.zs);
    if (pp.gp==NULL) return pp;
 
    px  = fxSobel(vp);
    py  = fySobel(vp);
    pxy = fySobel(px);
    pxx = fxxSobel(vp);
    pyy = fyySobel(vp);
 
    if (px.gp==NULL||py.gp==NULL||pxy.gp==NULL||pxx.gp==NULL||pyy.gp==NULL) {
        freeNull(px.gp);
        freeNull(py.gp);
        freeNull(pxy.gp);
        freeNull(pxx.gp);
        freeNull(pyy.gp);
        free_VSGraph(&pp);
        pp.state = JBXL_GRAPH_ERROR;
        return pp;
    }
 
    for (i=0; i<vp.xs*vp.ys; i++) {
        Ix  = px.gp[i];
        Iy  = py.gp[i];
        Ixy = pxy.gp[i];
        Ixx = pxx.gp[i];
        Iyy = pyy.gp[i];
        d   = 1. + Ix*Ix + Iy*Iy;
 
        K = (Ixx*Iyy-Ixy*Ixy)/(d*d); 
        H = (Ixx+Ixx*Iy*Iy+Iyy+Iyy*Ix*Ix-2*Ix*Ixy*Iy)/(2.*d*sqrt(d));
        pp.gp[i] = set_vector(K, H, 0.0);
    }
 
    free(px.gp);
    free(py.gp);
    free(pxy.gp);
    free(pxx.gp);
    free(pyy.gp);
 
    return pp;
}

References free_VSGraph, freeNull, fxSobel(), fxxSobel(), fySobel(), fyySobel(), FSGraph::gp, VSGraph::gp, JBXL_GRAPH_ERROR, JBXL_GRAPH_IVDARG_ERROR, JBXL_GRAPH_NODATA_ERROR, make_VSGraph(), set_vector(), VSGraph::state, FSGraph::xs, FSGraph::ys, and FSGraph::zs.

Referenced by WSCurve().

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curvature3D()

VSGraph curvature3D

(

FSGraph

vp

)

VSGraph curvature3D(FSGraph vp)

3Dグラフィックデータの4次元曲率を実数計算する．

Parameters

vp	計算対象となるグラフィックデータ構造体．

Returns

4次元曲率を代入した vector型グラフィックデータ(K,Hの2次元)．

Definition at line 1235 of file gmt.c.

{
    int  i;
    double alph, beta, gamm, K, H;
    double fx, fy, fz, fxy, fyz, fzx, fxx, fyy, fzz, nb;
    FSGraph px, py, pz, pxy, pyz, pzx, pxx, pyy, pzz, nab;
    VSGraph pp;
 
    memset(&pp, 0, sizeof(VSGraph));
    if (vp.gp==NULL) {
        pp.state = JBXL_GRAPH_NODATA_ERROR;
        return pp;
    }
 
    if (vp.zs<5) {
        //fprintf(stderr,"CURVATURE3D: z dimension is < 5.\n");
        pp.state = JBXL_GRAPH_IVDARG_ERROR;
        return pp;
    }
 
    pp = make_VSGraph(vp.xs, vp.ys, vp.zs);
    if (pp.gp==NULL) return pp;
 
    nab = fNabra(vp);
    px  = fxSobel(vp);
    py  = fySobel(vp);
    pz  = fzSobel(vp);
    pxy = fySobel(px);
    pyz = fzSobel(py);
    pzx = fxSobel(pz);
    pxx = fxxSobel(vp);
    pyy = fyySobel(vp);
    pzz = fzzSobel(vp);
 
    if (nab.gp==NULL || px.gp==NULL  || py.gp==NULL  || pz.gp==NULL  ||
                        pxy.gp==NULL || pyz.gp==NULL || pzx.gp==NULL ||
                        pxx.gp==NULL || pyy.gp==NULL || pzz.gp==NULL) {
        freeNull(px.gp);
        freeNull(py.gp);
        freeNull(pz.gp);
        freeNull(pxy.gp);
        freeNull(pyz.gp);
        freeNull(pzx.gp);
        freeNull(pxx.gp);
        freeNull(pyy.gp);
        freeNull(pzz.gp);
        freeNull(nab.gp);
        free_VSGraph(&pp);
        pp.state = JBXL_GRAPH_ERROR;
        return pp;
    }
 
    for (i=0; i<vp.xs*vp.ys*vp.zs; i++) {
        nb  = nab.gp[i];
        fx  = px.gp[i];
        fy  = py.gp[i];
        fz  = pz.gp[i];
        fxy = pxy.gp[i];
        fyz = pyz.gp[i];
        fzx = pzx.gp[i];
        fxx = pxx.gp[i];
        fyy = pyy.gp[i];
        fzz = pzz.gp[i];
 
        if (nb*(fx*fx+fy*fy) !=0) {
            alph = (2*fx*fy*fxy - fx*fx*fyy - fy*fy*fxx)/(fx*fx+fy*fy);
            beta = (2*fz*(fx*fx+fy*fy)*(fx*fzx+fy*fyz) - 2*fx*fy*fz*fz*fxy
                        - fx*fx*fz*fz*fxx - fy*fy*fz*fz*fyy 
                        - (fx*fx+fy*fy)*(fx*fx+fy*fy)*fzz)/(nb*nb*(fx*fx+fy*fy));
            gamm = ((fx*fx+fy*fy)*(fy*fzx-fx*fyz) + (fx*fx-fy*fy)*fz*fxy
                        - fx*fy*fz*(fxx-fyy))/(nb*(fx*fx+fy*fy));
 
            K = alph*beta - gamm*gamm;
            H = (alph + beta)/2;
            pp.gp[i] = set_vector(K, H, 0.0);
        }
    }
 
    free(px.gp);
    free(py.gp);
    free(pz.gp);
    free(pxy.gp);
    free(pyz.gp);
    free(pzx.gp);
    free(pxx.gp);
    free(pyy.gp);
    free(pzz.gp);
    free(nab.gp);
 
    return pp;
}

References fNabra(), free_VSGraph, freeNull, fxSobel(), fxxSobel(), fySobel(), fyySobel(), fzSobel(), fzzSobel(), FSGraph::gp, VSGraph::gp, JBXL_GRAPH_ERROR, JBXL_GRAPH_IVDARG_ERROR, JBXL_GRAPH_NODATA_ERROR, make_VSGraph(), set_vector(), VSGraph::state, FSGraph::xs, FSGraph::ys, and FSGraph::zs.

Referenced by WSCurve().

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edge_enhance()

WSGraph edge_enhance	(	WSGraph	gd,
		int	mode )

WSGraph edge_enhance(WSGraph gd, int mode)

2Dグラフィックデータのラプラシアンを使ったエッジ強調．

Parameters

gd	計算対象となるグラフィックデータ構造体．
mode	モード． 4: 4近傍ラプラシアン． 8: 8近傍ラプラシアン 3x3 その他: Sobelのラプラシアン(24近傍) 5x5

Returns

処理されたグラフィックデータ．

Definition at line 1521 of file gmt.c.

{
    int  i;
    WSGraph la, vp;
 
    memset(&vp, 0, sizeof(WSGraph));
    if (gd.gp==NULL) {
        vp.state = JBXL_GRAPH_NODATA_ERROR;
        return vp;
    }
 
    la = Laplacian(gd, mode);  
    if (la.gp==NULL) return la;
 
    vp = make_WSGraph(gd.xs, gd.ys, 1);
    if (vp.gp==NULL) return vp;
 
    for (i=0; i<vp.xs*vp.ys; i++) vp.gp[i] = gd.gp[i] - la.gp[i];
    return vp;
}

References WSGraph::gp, JBXL_GRAPH_NODATA_ERROR, Laplacian(), make_WSGraph(), WSGraph::state, WSGraph::xs, and WSGraph::ys.

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euclid_distance()

WSGraph euclid_distance	(	WSGraph	vp,
		int *	rr,
		int	bc )

WSGraph euclid_distance(WSGraph vp, int* rr, int bc)

WSGグラフィック上を2値化し,各点における輝度値0の点からのユークリッド距離の最小を求める．

Parameters

vp	操作対象となるグラフィックデータ構造体．
*rr	指定しない．画像中のユークリッド距離の最大値が入る．
bc	輝度値の2値化の値．これより小さいものは0,これ以上は1．

Returns

輝度値の代わりにユークリッド距離が記入されたグラフィックデータ．

Definition at line 1888 of file gmt.c.

{
    int  i, j, k, l;
    int  df, db, d, w; 
    int  rmax, rstart, rend;
    WSGraph wp;
    ISGraph pp, buff;
 
    memset(&wp, 0, sizeof(WSGraph));
    if (vp.gp==NULL) {
        wp.state = JBXL_GRAPH_NODATA_ERROR;
        return wp;
    }
 
    wp = make_WSGraph(vp.xs, vp.ys, vp.zs);
    if (wp.gp==NULL) return wp;
 
    pp = make_ISGraph(vp.xs, vp.ys, vp.zs);
    if (pp.gp==NULL) {
        free_WSGraph(&wp);
        wp.state = pp.state;
        return wp;
    }
 
    for (i=0; i<vp.xs*vp.ys*vp.zs; i++) {
         if (vp.gp[i]>=bc) pp.gp[i] = 1;
         else              pp.gp[i] = 0;
    }
 
    for (k=1; k<=vp.zs; k++) {
        for (j=1; j<=vp.ys; j++) {
            df = vp.xs;
            for (i=1; i<=vp.xs; i++) {
                if (Vxt(pp, i, j, k)!=0) df = df + 1;
                else                     df = 0;
                Vxt(pp, i, j, k) = df*df;
            }
        }
    }
    
    for (k=1; k<=vp.zs; k++) {
        for (j=1; j<=vp.ys; j++) {
            db = vp.xs;
            for (i=vp.xs; i>=1; i--) {
                if (Vxt(pp, i, j, k)!=0) db = db + 1;
                else                     db = 0;
                Vxt(pp, i, j, k) = Min(Vxt(pp, i, j, k), db*db);
            }
        }
    }
 
    buff = make_ISGraph(vp.ys, 1, 1);
    for (k=1; k<=vp.zs; k++) {
        for (i=1; i<=vp.xs; i++) {
            for (j=1; j<=vp.ys; j++) {
                Lxt(buff, j) = Vxt(pp, i, j, k);
            }
            for (j=1; j<=vp.ys; j++) {
                d = Lxt(buff, j);
                if (d!=0) {
                    rmax   = (int)sqrt((double)d) + 1;
                    rstart = Min(rmax, j-1);
                    rend   = Min(rmax, vp.ys-j);
                    for (l=-rstart; l<=rend; l++) {
                        w = Lxt(buff, j+l) + l*l;
                        if (w<d) d = w;
                    }
                }
                Vxt(pp, i, j, k) = d;
            }
        }
    }
    free(buff.gp);
 
    *rr = 0;
    buff = make_ISGraph(vp.zs, 1, 1);
    for (j=1; j<=vp.ys; j++) {
        for (i=1; i<=vp.xs; i++) {
            for (k=1; k<=vp.zs; k++) {
                Lxt(buff, k) = Vxt(pp, i, j, k);
            }
            for (k=1; k<=vp.zs; k++) {
                d = Lxt(buff, k);
                if (d!=0) {
                    rmax   = (int)sqrt((double)d) + 1;
                    rstart = Min(rmax, k-1);
                    rend   = Min(rmax, vp.zs-k);
                    for (l=-rstart; l<=rend; l++) {
                        w = Lxt(buff, k+l) + l*l;
                        if (w<d) d = w;
                    }
                    *rr = Max(*rr, d);
                }
                Vxt(pp, i, j, k) = d;
            }
        }
    }
    free(buff.gp);
 
    for (i=0; i<wp.xs*wp.ys*wp.zs; i++) {
        wp.gp[i] = (sWord)pp.gp[i];
        if (pp.gp[i]>32767) {
            fprintf(stderr,"EUCLID_DISTANCE: WARNING: distance is too long = %d!\n",pp.gp[i]);
        }
    }
    free(pp.gp);
 
    return wp;
}

References free_WSGraph, WSGraph::gp, ISGraph::gp, JBXL_GRAPH_NODATA_ERROR, Lxt, make_ISGraph(), make_WSGraph(), Max, Min, WSGraph::state, ISGraph::state, Vxt, WSGraph::xs, WSGraph::ys, and WSGraph::zs.

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fNabra()

FSGraph fNabra

(

FSGraph

vp

)

WSGraph fNabra(WSGraph vp)

グラフィックデータの ナブラの絶対値を実数計算する(Sobel)． 精度が上昇するが時間がかかる．

Parameters

vp	計算対象となるグラフィックデータ構造体．

Returns

ナブラ．double型グラフィックデータ．

Definition at line 1162 of file gmt.c.

{
    int    i, xs, ys, zs;
    double xx, yy, zz;
    FSGraph px, py, pz, pn;
     
    memset(&pn, 0, sizeof(FSGraph));
    if (vp.gp==NULL) {
        pn.state = JBXL_GRAPH_NODATA_ERROR;
        return pn;
    }
 
    xs = vp.xs;
    ys = vp.ys;
    zs = vp.zs;
    pn = make_FSGraph(xs, ys, zs);
    if (pn.gp==NULL) return pn;
 
    px = fxSobel(vp);
    if (px.gp==NULL) {
        free_FSGraph(&pn);
        pn.state = px.state;
        return pn;
    }
    py = fySobel(vp);
    if (py.gp==NULL) {
        free_FSGraph(&pn);
        free(px.gp);
        pn.state = py.state;
        return pn;
    }
 
    if (vp.zs<3) {
        for (i=0; i<xs*ys; i++) {
            xx = px.gp[i];
            yy = py.gp[i];
            pn.gp[i] = sqrt(xx*xx + yy*yy);
        }
    }
    else {
        pz = fzSobel(vp);
        if (pz.gp==NULL) {
            free_FSGraph(&pn);
            free(px.gp);
            free(py.gp);
            pn.state = pz.state;
            return pn;
        }
 
        for (i=0; i<xs*ys*zs; i++) {
            xx = px.gp[i];
            yy = py.gp[i];
            zz = pz.gp[i];
            pn.gp[i] = sqrt(xx*xx + yy*yy + zz*zz);
        }
        free(pz.gp);
    }
 
    free(px.gp);
    free(py.gp);
 
    return pn;
}

References free_FSGraph, fxSobel(), fySobel(), fzSobel(), FSGraph::gp, JBXL_GRAPH_NODATA_ERROR, make_FSGraph(), FSGraph::state, FSGraph::xs, FSGraph::ys, and FSGraph::zs.

Referenced by curvature3D().

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fxSobel()

FSGraph fxSobel

(

FSGraph

vp

)

FSGraph fxSobel(FSGraph vp)

グラフィックデータの x方向微分(Sobel)を実数計算する． 精度が上昇するが時間がかかる．

Parameters

vp	計算対象となる double型グラフィックデータ構造体．

Returns

処理されたグラフィックデータ．

Definition at line 140 of file gmt.c.

{
    int    i, j, k;
    double da, db, dc, dd, de, nr;
    FSGraph xp;
    
    memset(&xp, 0, sizeof(FSGraph));
    if (vp.gp==NULL) {
        xp.state = JBXL_GRAPH_NODATA_ERROR;
        return xp;
    }
 
    if (vp.zs<=0) vp.zs = 1; 
    xp = make_FSGraph(vp.xs, vp.ys, vp.zs);
    if (xp.gp==NULL) return xp;
 
    for (k=0; k<vp.zs; k++) {
        for (j=1; j<vp.ys-1; j++) {
            for (i=1; i<vp.xs-1; i++) {
                da = Vx(vp, i+1, j-1, k) - Vx(vp, i-1, j-1, k);
                db = Vx(vp, i+1, j,   k) - Vx(vp, i-1, j,   k);
                dc = Vx(vp, i+1, j+1, k) - Vx(vp, i-1, j+1, k);
                if (k==0 || k==vp.zs-1) {
                    dd = de = 0.;
                    nr = 8.;
                }
                else {
                    dd = Vx(vp, i+1, j, k-1) - Vx(vp, i-1, j, k-1);
                    de = Vx(vp, i+1, j, k+1) - Vx(vp, i-1, j, k+1);
                    nr = 12.;
                }
                Vx(xp, i, j, k) = (da + 2.*db + dc + dd + de)/nr;
            }
        }
    }
 
    return xp;
}

References FSGraph::gp, JBXL_GRAPH_NODATA_ERROR, make_FSGraph(), FSGraph::state, Vx, FSGraph::xs, FSGraph::ys, and FSGraph::zs.

Referenced by curvature(), curvature3D(), fNabra(), and vfNabra().

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fxxSobel()

FSGraph fxxSobel

(

FSGraph

vp

)

FSGraph fxxSobel(FSGraph vp)

グラフィックデータの x方向の2階微分(Sobel)を実数計算する． 精度が上昇するが時間がかかる．

Parameters

vp	計算対象となる double型グラフィックデータ構造体．

Returns

処理されたグラフィックデータ．

Definition at line 492 of file gmt.c.

{
    int  x, y, z, xs, ys, zs, cx, cy, cz, ps;
    double da, db, dc, dd, de;
    double df, dg, dh, di, dj, dk, dl, dm;
    FSGraph px;
 
    memset(&px, 0, sizeof(FSGraph));
    if (vp.gp==NULL) {
        px.state = JBXL_GRAPH_NODATA_ERROR;
        return px;
    }
 
    xs = vp.xs;
    ys = vp.ys;
    zs = vp.zs;
    ps = xs*ys;
 
    if (zs<5) { 
        px = make_FSGraph(xs, ys, 1);
        if (px.gp==NULL) return px;
 
        for (y=2; y<ys-2; y++) {
            cy = y*xs;
            for (x=2; x<xs-2; x++) {
                cx = cy + x;
                da = vp.gp[cx-2*xs+2] - 2*vp.gp[cx-2*xs] + vp.gp[cx-2*xs-2];
                db = vp.gp[cx  -xs+2] - 2*vp.gp[cx  -xs] + vp.gp[cx  -xs-2];
                dc = vp.gp[cx     +2] - 2*vp.gp[cx]      + vp.gp[cx     -2];
                dd = vp.gp[cx  +xs+2] - 2*vp.gp[cx  +xs] + vp.gp[cx  +xs-2];
                de = vp.gp[cx+2*xs+2] - 2*vp.gp[cx+2*xs] + vp.gp[cx+2*xs-2];
                px.gp[cx] = (da + 4*db + 6*dc + 4*dd + de)/64.;
            }
        }
    }
 
    else {
        px = make_FSGraph(xs, ys, zs);
        if (px.gp==NULL) return px;
 
        for (z=2; z<zs-2; z++) {
            cz = z*ps;
            for (y=2; y<ys-2; y++) {
                cy = cz + y*xs;
                for (x=2; x<xs-2; x++) {
                    cx = cy + x;
                    da = vp.gp[cx   +2]    - 2*vp.gp[cx]       + vp.gp[cx-2];    
                    db = vp.gp[cx+xs+2]    - 2*vp.gp[cx+xs]    + vp.gp[cx+xs-2];     
                    dc = vp.gp[cx-xs+2]    - 2*vp.gp[cx-xs]    + vp.gp[cx-xs-2];    
                    dd = vp.gp[cx+ps+2]    - 2*vp.gp[cx+ps]    + vp.gp[cx+ps-2];     
                    de = vp.gp[cx-ps+2]    - 2*vp.gp[cx-ps]    + vp.gp[cx-ps-2];     
                    df = vp.gp[cx+xs+ps+2] - 2*vp.gp[cx+xs+ps] + vp.gp[cx+xs+ps-2];
                    dg = vp.gp[cx+xs-ps+2] - 2*vp.gp[cx+xs-ps] + vp.gp[cx+xs-ps-2];
                    dh = vp.gp[cx-xs+ps+2] - 2*vp.gp[cx-xs+ps] + vp.gp[cx-xs+ps-2];
                    di = vp.gp[cx-xs-ps+2] - 2*vp.gp[cx-xs-ps] + vp.gp[cx-xs-ps-2];
                    dj = vp.gp[cx+2*xs+2]  - 2*vp.gp[cx+2*xs]  + vp.gp[cx+2*xs-2];  
                    dk = vp.gp[cx-2*xs+2]  - 2*vp.gp[cx-2*xs]  + vp.gp[cx-2*xs-2];  
                    dl = vp.gp[cx+2*ps+2]  - 2*vp.gp[cx+2*ps]  + vp.gp[cx+2*ps-2]; 
                    dm = vp.gp[cx-2*ps+2]  - 2*vp.gp[cx-2*ps]  + vp.gp[cx-2*ps-2]; 
                    px.gp[cx] = (8*da+4*(db+dc+dd+de)+2*(df+dg+dh+di)+dj+dk+dl+dm)/144.;
                }
            }
        }
    }
 
    return px;
}

References FSGraph::gp, JBXL_GRAPH_NODATA_ERROR, make_FSGraph(), FSGraph::state, FSGraph::xs, FSGraph::ys, and FSGraph::zs.

Referenced by curvature(), and curvature3D().

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fySobel()

FSGraph fySobel

(

FSGraph

vp

)

FSGraph fySobel(FSGraph vp)

グラフィックデータの y方向微分(Sobel)を実数計算する． 精度が上昇するが時間がかかる．

Parameters

vp	計算対象となる double型グラフィックデータ構造体．

Returns

処理されたグラフィックデータ．

Definition at line 237 of file gmt.c.

{
    int    i, j, k;
    double da, db, dc, dd, de, nr;
    FSGraph xp;
    
    memset(&xp, 0, sizeof(FSGraph));
    if (vp.gp==NULL) {
        xp.state = JBXL_GRAPH_NODATA_ERROR;
        return xp;
    }
 
    if (vp.zs<=0) vp.zs = 1; 
    xp = make_FSGraph(vp.xs, vp.ys, vp.zs);
    if (xp.gp==NULL) return xp;
 
    for (k=0; k<vp.zs; k++) {
        for (j=1; j<vp.ys-1; j++) {
            for (i=1; i<vp.xs-1; i++) {
                da = Vx(vp, i-1, j+1, k) - Vx(vp, i-1, j-1, k);
                db = Vx(vp, i,   j+1, k) - Vx(vp, i,   j-1, k);
                dc = Vx(vp, i+1, j+1, k) - Vx(vp, i+1, j-1, k);
                if (k==0 || k==vp.zs-1) {
                    dd = de = 0.;
                    nr = 8.;
                }
                else {
                    dd = Vx(vp, i, j+1, k-1) - Vx(vp, i, j-1, k-1);
                    de = Vx(vp, i, j+1, k+1) - Vx(vp, i, j-1, k+1);
                    nr = 12.;
                }
                Vx(xp, i, j, k) = (da + 2.*db + dc + dd + de)/nr;
            }
        }
    }
 
    return xp;
}

References FSGraph::gp, JBXL_GRAPH_NODATA_ERROR, make_FSGraph(), FSGraph::state, Vx, FSGraph::xs, FSGraph::ys, and FSGraph::zs.

Referenced by curvature(), curvature3D(), fNabra(), and vfNabra().

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fyySobel()

FSGraph fyySobel

(

FSGraph

vp

)

FSGraph fyySobel(FSGraph vp)

グラフィックデータの y方向の2階微分(Sobel)を実数計算する． 精度が上昇するが時間がかかる．

Parameters

vp	計算対象となる double型グラフィックデータ構造体．

Returns

処理されたグラフィックデータ．

Definition at line 646 of file gmt.c.

{
    int  x, y, z, xs, ys, zs, cx, cy, cz, ps;
    double da, db, dc, dd, de;
    double df, dg, dh, di, dj, dk, dl, dm;
    FSGraph py;
 
    memset(&py, 0, sizeof(FSGraph));
    if (vp.gp==NULL) {
        py.state = JBXL_GRAPH_NODATA_ERROR;
        return py;
    }
 
    xs = vp.xs;
    ys = vp.ys;
    zs = vp.zs;
    ps = xs*ys;
 
    if (zs<5) { 
        py = make_FSGraph(xs, ys, 1);
        if (py.gp==NULL) return py;
 
        for (y=2; y<ys-2; y++) {
            cy = y*xs;
            for (x=2; x<xs-2; x++) {
                cx = cy + x;
                da = vp.gp[cx+2*xs-2] - 2*vp.gp[cx-2] + vp.gp[cx-2*xs-2];
                db = vp.gp[cx+2*xs-1] - 2*vp.gp[cx-1] + vp.gp[cx-2*xs-1]; 
                dc = vp.gp[cx+2*xs]   - 2*vp.gp[cx]   + vp.gp[cx-2*xs]; 
                dd = vp.gp[cx+2*xs+1] - 2*vp.gp[cx+1] + vp.gp[cx-2*xs+1]; 
                de = vp.gp[cx+2*xs+2] - 2*vp.gp[cx+2] + vp.gp[cx-2*xs+2];
                py.gp[cx] = (da + 4*db + 6*dc + 4*dd + de)/64.;
            }
        }
    }
    else {
        py = make_FSGraph(xs, ys, zs);
        if (py.gp==NULL) return py;
 
        for (z=2; z<zs-2; z++) {
            cz = z*ps;
            for (y=2; y<ys-2; y++) {
                cy = cz + y*xs;
                for (x=2; x<xs-2; x++) {
                    cx = cy + x;
                    da = vp.gp[cx+2*xs]      - 2*vp.gp[cx]      + vp.gp[cx-2*xs];    
                    db = vp.gp[cx+1+2*xs]    - 2*vp.gp[cx+1]    + vp.gp[cx+1-2*xs]; 
                    dc = vp.gp[cx-1+2*xs]    - 2*vp.gp[cx-1]    + vp.gp[cx-1-2*xs];
                    dd = vp.gp[cx+ps+2*xs]   - 2*vp.gp[cx+ps]   + vp.gp[cx+ps-2*xs]; 
                    de = vp.gp[cx-ps+2*xs]   - 2*vp.gp[cx-ps]   + vp.gp[cx-ps-2*xs]; 
                    df = vp.gp[cx+1+ps+2*xs] - 2*vp.gp[cx+1+ps] + vp.gp[cx+1+ps-2*xs]; 
                    dg = vp.gp[cx+1-ps+2*xs] - 2*vp.gp[cx+1-ps] + vp.gp[cx+1-ps-2*xs]; 
                    dh = vp.gp[cx-1+ps+2*xs] - 2*vp.gp[cx-1+ps] + vp.gp[cx-1+ps-2*xs]; 
                    di = vp.gp[cx-1-ps+2*xs] - 2*vp.gp[cx-1-ps] + vp.gp[cx-1-ps-2*xs]; 
                    dj = vp.gp[cx+2+2*xs]    - 2*vp.gp[cx+2]    + vp.gp[cx+2-2*xs];
                    dk = vp.gp[cx-2+2*xs]    - 2*vp.gp[cx-2]    + vp.gp[cx-2-2*xs];
                    dl = vp.gp[cx+2*ps+2*xs] - 2*vp.gp[cx+2*ps] + vp.gp[cx+2*ps-2*xs];
                    dm = vp.gp[cx-2*ps+2*xs] - 2*vp.gp[cx-2*ps] + vp.gp[cx-2*ps-2*xs];
                    py.gp[cx] = (8*da+4*(db+dc+dd+de)+2*(df+dg+dh+di)+dj+dk+dl+dm)/144.;
                }
            }
        }
    }
 
    return py;
}

References FSGraph::gp, JBXL_GRAPH_NODATA_ERROR, make_FSGraph(), FSGraph::state, FSGraph::xs, FSGraph::ys, and FSGraph::zs.

Referenced by curvature(), and curvature3D().

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fzSobel()

FSGraph fzSobel

(

FSGraph

vp

)

FSGraph fzSobel(FSGraph vp)

グラフィックデータの z方向微分(Sobel)を実数計算する． 精度が上昇するが時間がかかる．

Parameters

vp	計算対象となる double型グラフィックデータ構造体．

Returns

処理されたグラフィックデータ．

Definition at line 350 of file gmt.c.

{
    int    i, j, k;
    double da, db, dc, dd, de;
    FSGraph xp;
    
    memset(&xp, 0, sizeof(FSGraph));
    if (vp.gp==NULL) {
        xp.state = JBXL_GRAPH_NODATA_ERROR;
        return xp;
    }
 
    if (vp.zs<=1) {
        //fprintf(stderr,"FZSOBEL: no 3D data inputed.\n");
        xp.state = JBXL_GRAPH_IVDARG_ERROR;
        return xp;
    }
 
    xp = make_FSGraph(vp.xs, vp.ys, vp.zs);
    if (xp.gp==NULL) return xp;
 
    for (k=1; k<vp.zs-1; k++) {
        for (j=1; j<vp.ys-1; j++) {
            for (i=1; i<vp.xs-1; i++) {
                da = Vx(vp, i-1, j, k+1) - Vx(vp, i-1, j, k-1);
                db = Vx(vp, i+1, j, k+1) - Vx(vp, i+1, j, k-1);
                dc = Vx(vp, i,   j, k+1) - Vx(vp, i,   j, k-1);
                dd = Vx(vp, i, j-1, k+1) - Vx(vp, i, j-1, k-1);
                de = Vx(vp, i, j+1, k+1) - Vx(vp, i, j+1, k-1);
                Vx(xp, i, j, k) = (da + db + 2.*dc + dd + de)/12.;
            }
        }
    }
 
    for (j=1; j<vp.ys-1; j++) {
        for (i=1; i<vp.xs-1; i++) {
            da = Vx(vp, i-1, j, 1) - Vx(vp, i-1, j, 0);
            db = Vx(vp, i+1, j, 1) - Vx(vp, i+1, j, 0);
            dc = Vx(vp, i,   j, 1) - Vx(vp, i,   j, 0);
            dd = Vx(vp, i, j-1, 1) - Vx(vp, i, j-1, 0);
            de = Vx(vp, i, j+1, 1) - Vx(vp, i, j+1, 0);
            Vx(xp, i, j, 0) = (da + db + 2.*dc + dd + de)/12.;
 
            da = Vx(vp, i-1, j, vp.zs-1) - Vx(vp, i-1, j, vp.zs-2);
            db = Vx(vp, i+1, j, vp.zs-1) - Vx(vp, i+1, j, vp.zs-2);
            dc = Vx(vp, i,   j, vp.zs-1) - Vx(vp, i,   j, vp.zs-2);
            dd = Vx(vp, i, j-1, vp.zs-1) - Vx(vp, i, j-1, vp.zs-2);
            de = Vx(vp, i, j+1, vp.zs-1) - Vx(vp, i, j+1, vp.zs-2);
            Vx(xp, i, j, vp.zs-1) = (da + db + 2.*dc + dd + de)/12.;
        }
    }
 
    return xp;
}

References FSGraph::gp, JBXL_GRAPH_IVDARG_ERROR, JBXL_GRAPH_NODATA_ERROR, make_FSGraph(), FSGraph::state, Vx, FSGraph::xs, FSGraph::ys, and FSGraph::zs.

Referenced by curvature3D(), fNabra(), and vfNabra().

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fzzSobel()

FSGraph fzzSobel

(

FSGraph

vp

)

FSGraph fzzSobel(FSGraph vp)

グラフィックデータの z方向の2階微分(Sobel)を実数計算する． 精度が上昇するが時間がかかる．

Parameters

vp	計算対象となる double型グラフィックデータ構造体．

Returns

処理されたグラフィックデータ．

Definition at line 829 of file gmt.c.

{
    int  x, y, z, xs, ys, zs, cx, cy, cz, ps;
    double da, db, dc, dd, de;
    double df, dg, dh, di, dj, dk, dl, dm;
    FSGraph pz;
    
    memset(&pz, 0, sizeof(FSGraph));
    if (vp.gp==NULL) {
        pz.state = JBXL_GRAPH_NODATA_ERROR;
        return pz;
    }
 
    if (vp.zs<5) {
        //fprintf(stderr,"FZZSOBEL: no 3D data inputed.\n");
        pz.state = JBXL_GRAPH_IVDARG_ERROR;
        return pz;
    }
 
    xs = vp.xs;
    ys = vp.ys;
    zs = vp.zs;
    ps = xs*ys;
    pz = make_FSGraph(xs, ys, zs);
    if (pz.gp==NULL) return pz;
 
    for (z=2; z<zs-2; z++) {
        cz = z*ps;
        for (y=2; y<ys-2; y++) {
            cy = cz + y*xs;
            for (x=2; x<xs-2; x++) {
                cx = cy + x;
                da = vp.gp[cx     +2*ps] - 2*vp.gp[cx]      + vp.gp[cx     -2*ps];   
                db = vp.gp[cx+1   +2*ps] - 2*vp.gp[cx+1]    + vp.gp[cx+1   -2*ps];
                dc = vp.gp[cx-1   +2*ps] - 2*vp.gp[cx-1]    + vp.gp[cx-1   -2*ps];
                dd = vp.gp[cx  +xs+2*ps] - 2*vp.gp[cx  +xs] + vp.gp[cx  +xs-2*ps]; 
                de = vp.gp[cx  -xs+2*ps] - 2*vp.gp[cx  -xs] + vp.gp[cx  -xs-2*ps]; 
                df = vp.gp[cx+1+xs+2*ps] - 2*vp.gp[cx+1+xs] + vp.gp[cx+1+xs-2*ps]; 
                dg = vp.gp[cx+1-xs+2*ps] - 2*vp.gp[cx+1-xs] + vp.gp[cx+1-xs-2*ps]; 
                dh = vp.gp[cx-1+xs+2*ps] - 2*vp.gp[cx-1+xs] + vp.gp[cx-1+xs-2*ps]; 
                di = vp.gp[cx-1-xs+2*ps] - 2*vp.gp[cx-1-xs] + vp.gp[cx-1-xs-2*ps]; 
                dj = vp.gp[cx+2   +2*ps] - 2*vp.gp[cx+2]    + vp.gp[cx+2   -2*ps];
                dk = vp.gp[cx-2   +2*ps] - 2*vp.gp[cx-2]    + vp.gp[cx-2   -2*ps];
                dl = vp.gp[cx+2*xs+2*ps] - 2*vp.gp[cx+2*xs] + vp.gp[cx+2*xs-2*ps];
                dm = vp.gp[cx-2*xs+2*ps] - 2*vp.gp[cx-2*xs] + vp.gp[cx-2*xs-2*ps];
                pz.gp[cx] = (8*da+4*(db+dc+dd+de)+2*(df+dg+dh+di)+dj+dk+dl+dm)/144.;
            }
        }
    }
 
    cz = ps;
    for (y=2; y<ys-2; y++) {
        cy = cz + y*xs;
        for (x=2; x<xs-2; x++) {
            cx = cy + x;
            da = vp.gp[cx   +2*ps]   - 2*vp.gp[cx];  
            db = vp.gp[cx+1 +2*ps]   - 2*vp.gp[cx+1]; 
            dc = vp.gp[cx-1 +2*ps]   - 2*vp.gp[cx-1];
            dd = vp.gp[cx+xs+2*ps]   - 2*vp.gp[cx+xs]; 
            de = vp.gp[cx-xs+2*ps]   - 2*vp.gp[cx-xs]; 
            df = vp.gp[cx+1+xs+2*ps] - 2*vp.gp[cx+1+xs]; 
            dg = vp.gp[cx+1-xs+2*ps] - 2*vp.gp[cx+1-xs]; 
            dh = vp.gp[cx-1+xs+2*ps] - 2*vp.gp[cx-1+xs]; 
            di = vp.gp[cx-1-xs+2*ps] - 2*vp.gp[cx-1-xs]; 
            dj = vp.gp[cx+2   +2*ps] - 2*vp.gp[cx+2];
            dk = vp.gp[cx-2   +2*ps] - 2*vp.gp[cx-2];
            dl = vp.gp[cx+2*xs+2*ps] - 2*vp.gp[cx+2*xs];
            dm = vp.gp[cx-2*xs+2*ps] - 2*vp.gp[cx-2*xs];
            pz.gp[cx] = (8*da+4*(db+dc+dd+de)+2*(df+dg+dh+di)+dj+dk+dl+dm)/144.;
        }
    }
 
    cz = (zs-2)*ps;
    for (y=2; y<ys-2; y++) {
        cy = cz + y*xs;
        for (x=2; x<xs-2; x++) {
            cx = cy + x;
            da = - 2*vp.gp[cx]      + vp.gp[cx   -2*ps];     
            db = - 2*vp.gp[cx+1]    + vp.gp[cx+1 -2*ps]; 
            dc = - 2*vp.gp[cx-1]    + vp.gp[cx-1 -2*ps];
            dd = - 2*vp.gp[cx+xs]   + vp.gp[cx+xs-2*ps]; 
            de = - 2*vp.gp[cx-xs]   + vp.gp[cx-xs-2*ps]; 
            df = - 2*vp.gp[cx+1+xs] + vp.gp[cx+1+xs-2*ps]; 
            dg = - 2*vp.gp[cx+1-xs] + vp.gp[cx+1-xs-2*ps]; 
            dh = - 2*vp.gp[cx-1+xs] + vp.gp[cx-1+xs-2*ps]; 
            di = - 2*vp.gp[cx-1-xs] + vp.gp[cx-1-xs-2*ps]; 
            dj = - 2*vp.gp[cx+2]    + vp.gp[cx+2   -2*ps];
            dk = - 2*vp.gp[cx-2]    + vp.gp[cx-2   -2*ps];
            dl = - 2*vp.gp[cx+2*xs] + vp.gp[cx+2*xs-2*ps];
            dm = - 2*vp.gp[cx-2*xs] + vp.gp[cx-2*xs-2*ps];
            pz.gp[cx] = (8*da+4*(db+dc+dd+de)+2*(df+dg+dh+di)+dj+dk+dl+dm)/144.;
        }
    }
 
    return pz;
}

References FSGraph::gp, JBXL_GRAPH_IVDARG_ERROR, JBXL_GRAPH_NODATA_ERROR, make_FSGraph(), FSGraph::state, FSGraph::xs, FSGraph::ys, and FSGraph::zs.

Referenced by curvature3D().

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gauss_mask()

FMask gauss_mask	(	double	sig,
		int	ms,
		int	md )

FMask gauss_mask(double sig, int ms, int md)

ガウシアン処理用のフィルタをつくり出す．

Parameters

sig	ガウス関数のσ．
ms	フィルタの大きさ．
md	モード．2: 2次元．その他: 3次元

Returns

ガウシアン用フィルタ

Definition at line 1558 of file gmt.c.

{
    int    xx, yy, zz, ns, cp, dx, ps, sw;
    double min, *fm;
    FMask mask;
    
    mask.mode  = 0;
    mask.msize = 0;
    mask.imask = NULL;
 
    if (md<=2) {    // 2D 
        md = 2;
        ps = ms*ms;
        sw = 0;
    }
    else {          // 3D 
        md = 3;
        ps = ms*ms*ms;
        sw = 1;
    }
 
    ns  = ms/2;
    min = (double)SINTMAX;
    fm = (double*)malloc(ps*sizeof(double));
    mask.imask = (int*)malloc(ps*sizeof(int));
    if (fm==NULL || mask.imask==NULL) {
        if (fm!=NULL) free(fm);
        if (mask.imask!=NULL) free(mask.imask);
        memset(&mask, 0, sizeof(FMask));
        return mask;
    }
    memset(fm, 0, ps*sizeof(double));
    memset(mask.imask, 0, ps*sizeof(int));
 
    for (zz=-ns*sw; zz<=ns*sw; zz++) {
        for (yy=-ns; yy<=ns; yy++) {
            for (xx=-ns; xx<=ns; xx++) {
                cp = (zz+ns)*ms*ms*sw + (yy+ns)*ms + (xx+ns);
                fm[cp] = exp(-(xx*xx+yy*yy+zz*zz)/(sig*sig));
                if (fm[cp]!=0.0) min = Min(min, fm[cp]);
            }
        }
    }
 
    dx = 0;
    for (xx=0; xx<ps; xx++) {
        mask.imask[xx] = (int)(fm[xx]/min+0.5);
        dx += mask.imask[xx];
    }
 
    mask.msize = ms;
    mask.nfact = dx;
    mask.mode  = md;
 
    free(fm);
    return mask; 
}

References FMask::imask, Min, FMask::mode, FMask::msize, FMask::nfact, and SINTMAX.

imask()

WSGraph imask	(	WSGraph	xp,
		FMask	mask )

WSGraph imask(WSGraph xp, FMask mask)

フィルタ処理を行なう．

Parameters

xp	対象となるグラフィックデータ構造体．
mask	処理用マスク．

Returns

マスク処理されたグラフィックデータ．

Definition at line 1627 of file gmt.c.

{
    int    i, x, y, z, cx;
    int    xx, yy, zz, cp, cw, sw;
    int    kc, xc, xs, ps, pm, mz, zc;
    int    ms, nf, min;
    double dd;
    WSGraph vp;
 
    memset(&vp, 0, sizeof(WSGraph));
    if (xp.gp==NULL) {
        vp.state = JBXL_GRAPH_NODATA_ERROR;
        return vp;
    }
 
    if (xp.zs<=1 && mask.mode>2) {
        //fprintf(stderr, "IMASK: mismach mask dimension %d %d\n", xp.zs, mask.mode);
        vp.state = JBXL_GRAPH_IVDARG_ERROR;
        return vp;
    }
 
    nf = mask.nfact;
    ms = mask.msize;
    if (mask.mode==2) {
        sw = 0;
        pm = ms*ms;
    }
    else {
        sw = 1;
        pm = ms*ms*ms;
    }
 
    mz = Min(ms, xp.zs);
    kc = pm/2;
    zc = mz/2;
    xc = ms/2;
    xs = xp.xs;
    ps = xp.xs*xp.ys;
 
    min = SINTMAX;
    for (i=0; i<xp.xs*xp.ys; i++) min = Min(min, xp.gp[i]);
    vp = make_WSGraph(xp.xs, xp.ys, 1);
    if (vp.gp==NULL) return vp;
 
    for (i=0; i<vp.xs*vp.ys; i++) vp.gp[i] = min;
 
    z = xp.zs/2; 
    for (y=xc; y<xp.ys-xc; y++) 
    for (x=xc; x<xp.xs-xc; x++) {
        cx = z*ps + y*xs + x;
        dd = 0.0;
        for (zz=-zc*sw; zz<=zc*sw; zz++)
        for (yy=-xc; yy<=xc; yy++)
        for (xx=-xc; xx<=xc; xx++) {
            cp = kc + xx + yy*ms + zz*ms*ms;
            cw = cx + xx + yy*xs + zz*ps;
            dd = dd + (double)xp.gp[cw]*mask.imask[cp];
        }
        vp.gp[y*xs + x] = (sWord)(dd/nf);
    }
    return vp;
}

References WSGraph::gp, FMask::imask, JBXL_GRAPH_IVDARG_ERROR, JBXL_GRAPH_NODATA_ERROR, make_WSGraph(), Min, FMask::mode, FMask::msize, FMask::nfact, SINTMAX, WSGraph::state, WSGraph::xs, WSGraph::ys, and WSGraph::zs.

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Laplacian()

WSGraph Laplacian	(	WSGraph	vp,
		int	mode )

WSGraph Laplacian(WSGraph vp, int mode)

2Dグラフィックデータのラプラシアンを計算する．

Parameters

vp	計算対象となるグラフィックデータ構造体．
mode	モード． 4: 4近傍ラプラシアン
mode	8: 8近傍ラプラシアン
mode	その他: Sobelのラプラシアン(24近傍)

Returns

処理されたグラフィックデータ．

Definition at line 24 of file gmt.c.

{
    int  i, j;
    int  da, db, dc, dd, de, df, dg, dh;
    WSGraph lp;
 
    lp = make_WSGraph(vp.xs, vp.ys, 1);
    if (lp.gp==NULL) return lp;
 
    if (vp.gp==NULL) {
        lp.state = JBXL_GRAPH_NODATA_ERROR;
        return lp;
    }
 
    if (mode==4) {
        for (j=1; j<vp.ys-1; j++) {
            for (i=1; i<vp.xs-1; i++) {
                da = Px(vp, i+1, j) + Px(vp, i-1, j);
                db = Px(vp, i, j);
                dc = Px(vp, i, j+1) + Px(vp, i, j-1);
                Px(lp, i, j) = da - 4*db + dc;
            }
        }
    }
 
    else if (mode==8) {
        for (j=1; j<vp.ys-1; j++) {
            for (i=1; i<vp.xs-1; i++) {
                da = Px(vp, i+1, j) + Px(vp, i-1, j);
                db = Px(vp, i, j+1) + Px(vp, i, j-1);
                dc = Px(vp, i, j);
                dd = Px(vp, i+1, j+1) + Px(vp, i-1, j+1);
                de = Px(vp, i+1, j-1) + Px(vp, i-1, j-1);
                Px(lp, i, j) = da + db - 8*dc + dd + de;
            }
        }
    }
 
    else {
        for (j=2; j<vp.ys-2; j++) {
            for (i=2; i<vp.xs-2; i++) {
                da = Px(vp, i, j);
                db = Px(vp, i+1, j)   + Px(vp, i-1, j) + Px(vp, i, j+1) + Px(vp, i, j-1);
                dc = Px(vp, i-1, j-2) + Px(vp, i, j-2) + Px(vp, i+1, j-2);
                dd = Px(vp, i-1, j+2) + Px(vp, i, j+2) + Px(vp, i+1, j+2);
                de = Px(vp, i-2, j-1) + Px(vp, i-2, j) + Px(vp, i-2, j+1);
                df = Px(vp, i+2, j-1) + Px(vp, i+2, j) + Px(vp, i+2, j+1);
                dg = Px(vp, i-2, j-2) + Px(vp, i+2, j-2);
                dh = Px(vp, i-2, j+2) + Px(vp, i+2, j+2);
                Px(lp, i, j) = (sWord)((-24*da-8*db+4*(dc+dd+de+df)+2*(dg+dh))/64);
            }
        }
    }
 
    return lp;
}

References WSGraph::gp, JBXL_GRAPH_NODATA_ERROR, make_WSGraph(), Px, WSGraph::state, WSGraph::xs, and WSGraph::ys.

Referenced by edge_enhance().

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median()

WSGraph median	(	WSGraph	xp,
		int	ms )

WSGraph median(WSGraph xp, int ms)

メディアンフィルタ処理を行なう．3D処理可．

Parameters

xp	対象となるグラフィックデータ構造体．
ms	フィルタの大きさ．

Returns

メディアンフィルタ処理されたグラフィックデータ．

Definition at line 1701 of file gmt.c.

{
    int   i, j, x, y, z;
    int   xx, yy, zz, cw, ux, mz;
    int   kc, xc, zc, xs, ps, cx;
    WSGraph vp;
    sWord   *me;
 
    memset(&vp, 0, sizeof(WSGraph));
    if (xp.gp==NULL) {
        vp.state = JBXL_GRAPH_NODATA_ERROR;
        return vp;
    }
 
    mz = Min(ms, xp.zs);
    me = (sWord*)malloc(ms*ms*mz*sizeof(sWord));
    if (me==NULL) {
        vp.state = JBXL_GRAPH_MEMORY_ERROR;
        return vp;
    }
    memset(me, 0, ms*ms*mz*sizeof(sWord));
 
    kc = ms*ms*mz/2;
    xc = ms/2;
    zc = mz/2;
    xs = xp.xs;
    ps = xp.xs*xp.ys;
    vp = make_WSGraph(vp.xs, vp.ys, vp.zs);
    if (vp.gp==NULL) {
        free(me);
        return vp;
    }
    
    z = xp.zs/2;
    for(y=xc; y<xp.ys-xc; y++) {
        for(x=xc; x<xp.xs-xc; x++) {
            cx = z*ps + y*xs + x;
            i  = 0;
            for (zz=-zc; zz<=zc; zz++) {
                for (yy=-xc; yy<=xc; yy++) {
                    for (xx=-xc; xx<=xc; xx++) {
                        cw = cx + xx + yy*xs + zz*ps;
                        me[i++] = xp.gp[cw];
                    }
                }
            }
 
            for (i=0; i<ms*ms*mz-1; i++) {
                for (j=i+1; j<ms*ms*mz; j++) {
                    if (me[i]<me[j]) {
                        ux  = me[i];
                        me[i] = me[j];
                        me[j] = ux;
                    }
                }
            }
            vp.gp[cx-z*ps] = me[kc];
        }
    }
 
    free(me);
    return vp;
}

References WSGraph::gp, JBXL_GRAPH_MEMORY_ERROR, JBXL_GRAPH_NODATA_ERROR, make_WSGraph(), Min, WSGraph::state, WSGraph::xs, WSGraph::ys, and WSGraph::zs.

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Nabra()

WSGraph Nabra

(

WSGraph

vp

)

WSGraph Nabra(WSGraph vp)

グラフィックデータの ナブラの絶対値を計算する(Sobel)．

Parameters

vp	計算対象となるグラフィックデータ構造体．

Returns

ナブラ．sWord型グラフィックデータ．

Definition at line 1088 of file gmt.c.

{
    int   i, xs, ys, zs;
    int   xx, yy, zz;
    WSGraph px, py, pz, pn;
     
    memset(&pn, 0, sizeof(WSGraph));
    if (vp.gp==NULL) {
        pn.state = JBXL_GRAPH_NODATA_ERROR;
        return pn;
    }
 
    xs = vp.xs;
    ys = vp.ys;
    zs = vp.zs;
    pn = make_WSGraph(xs, ys, zs);
    if (pn.gp==NULL) return pn;
 
    px = xSobel(vp);
    if (px.gp==NULL) {
        free_WSGraph(&pn);
        pn.state = px.state;
        return pn;
    }
    py = ySobel(vp);
    if (py.gp==NULL) {
        free_WSGraph(&pn);
        free(px.gp);
        pn.state = py.state;
        return pn;
    }
 
    if (vp.zs<3) {
        for (i=0; i<xs*ys; i++) {
            xx = px.gp[i];
            yy = py.gp[i];
            pn.gp[i] = (sWord)sqrt(xx*xx + yy*yy);
        }
    }
    else {
        pz = zSobel(vp);
        if (pz.gp==NULL) {
            free_WSGraph(&pn);
            free(px.gp);
            free(py.gp);
            pn.state = pz.state;
            return pn;
        }
 
        for (i=0; i<xs*ys*zs; i++) {
            xx = px.gp[i];
            yy = py.gp[i];
            zz = pz.gp[i];
            pn.gp[i] = (sWord)sqrt(xx*xx + yy*yy + zz*zz);
        }
        free(pz.gp);
    }
 
    free(px.gp);
    free(py.gp);
 
    return pn;
}

References free_WSGraph, WSGraph::gp, JBXL_GRAPH_NODATA_ERROR, make_WSGraph(), WSGraph::state, WSGraph::xs, xSobel(), WSGraph::ys, ySobel(), WSGraph::zs, and zSobel().

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out_round()

int out_round	(	WSGraph	vp,
		int	x,
		int	y,
		IRBound *	rb,
		int	mode )

int out_round(WSGraph vp, int x, int y, IRBound* rb, int mode)

2Dグラフィックデータ構造体vpの(x,y)にあるオブジェクトの周囲長を得る．

Parameters

	vp	操作対象となる 2D グラフィックデータ構造体．
	x,y	情報を得たいオブジェクトの左上縁の座標． この座標の左横に情報を得たいオブジェクトの一部が在ってはいけない．
[out]	rb	オブジェクトの情報を格納する境界構造体． rb->xmin: オブジェクトの x座標の最小値． rb->xmax: オブジェクトの x座標の最大値． rb->ymin: オブジェクトの y座標の最小値． rb->ymax: オブジェクトの y座標の最大値． rb->misc: 8近傍モード時の斜めの距離の回数． 周囲長を 戻り値 + rb->misc*{sqrt(2.)-1} で計算する場合もある．
	mode	モード．8: 8近傍探索．その他: 4近傍探索．

Returns

オブジェクトの周囲長．ただし，8近傍モードの場合，斜めの距離も1と数える．rb->misc 参照．

Attention

注: 1ドットの長さは1と数える．プログラム中で EGMAX+1 を使用．

Definition at line 2021 of file gmt.c.

{
    int  i, j, sp, cp, w, ll, ss;
    int  xx, yy, vx, vy, ix, eflg=OFF;
    int  r8[8]={-1, 1, -1, -1, 1, -1, 1, 1};
    int  r4[8]={ 0, 1, -1,  0, 0, -1, 1, 0};
    int* cc;
 
    if (vp.gp==NULL) return JBXL_GRAPH_IVDARG_ERROR;
 
    i = y*vp.xs + x;
    rb->xmax = rb->xmin = x;
    rb->ymax = rb->ymin = y;
    sp = cp = i;
    ss = 0;
    ll = 0;
    vx = 1;
    vy = 0;
 
    if (vp.gp[sp]==0 || sp==0) {
        //fprintf(stderr,"OUT_ROUND: irregular start point!! sp = %d\n",sp);
        return JBXL_GRAPH_IVDPARAM_ERROR;
    }
 
    if (mode==8){
        ix = 8;
        cc = r8;
    }
    else if (mode==4) {
        ix = 4;
        cc = r4;
    }
    else {
        //fprintf(stderr,"OUT_ROUND: invalid mode = %d!!\n",mode);
        return JBXL_GRAPH_IVDMODE_ERROR;
    }
 
    do {
        w  = abs(vx)+abs(vy);
        xx = (vx*cc[0]+vy*cc[1])/w;
        yy = (vx*cc[2]+vy*cc[3])/w;
        for (j=1; j<=ix; j++) {
            if (vp.gp[cp+yy*vp.xs+xx]!=0) {
                vx = xx;
                vy = yy;
                cp = cp + yy*vp.xs + xx;
                xx = cp%vp.xs;
                yy = (cp-xx)/vp.xs;
                rb->xmax = Max(rb->xmax, xx);
                rb->ymax = Max(rb->ymax, yy);
                rb->xmin = Min(rb->xmin, xx);
                rb->ymin = Min(rb->ymin, yy);
                break;
            }
            else {
                if(sp==cp && xx==-1 && yy==0) {
                    eflg = ON;
                    break;
                }
                w  = abs(xx)+abs(yy);
                vx = (xx*cc[4]+yy*cc[5])/w;
                vy = (xx*cc[6]+yy*cc[7])/w;
                xx = vx;
                yy = vy;
            }
        }
        ll++;
        if (abs(vx)+abs(vy)==2) ss++;
        //
    } while(eflg==OFF);
 
    if (mode==4) ss = 0;
    (rb->xmax)++;
    (rb->ymax)++;
    (rb->xmin)--;
    (rb->ymin)--;
    rb->misc = ss;
 
    return ll;
}

References WSGraph::gp, JBXL_GRAPH_IVDARG_ERROR, JBXL_GRAPH_IVDMODE_ERROR, JBXL_GRAPH_IVDPARAM_ERROR, Max, Min, IRBound::misc, OFF, ON, IRBound::xmax, IRBound::xmin, WSGraph::xs, IRBound::ymax, and IRBound::ymin.

to2d()

WSGraph to2d	(	WSGraph	gd,
		int	mode )

WSGraph to2d(WSGraph gd, int mode)

3Dグラフィックを2Dへ射影する(MIP画像)．

Parameters

gd	操作対象となる3Dグラフィックデータ構造体．
mode	モード． SIDEX_VIEW: x方向から射影する． SIDEY_VIEW: y方向から射影する． SIDEZ_VIEW: z方向から射影する． TOP_VIEW: z方向から射影する． TOP_VIEW_DEPTH: z方向から射影する．ただし,z軸に比例して画像に濃淡を付加する．

Returns

射影された2Dグラフィックデータ(WSGraph, MIP画像)

Definition at line 1781 of file gmt.c.

{
    int  i, j, k, psize;
    int  cx, cy, cz, cw, xx, yy;
    WSGraph vp;
 
    memset(&vp, 0, sizeof(WSGraph));
    if (gd.gp==NULL) {
        vp.state = JBXL_GRAPH_NODATA_ERROR;
        return vp;
    }
 
    psize = gd.xs*gd.ys;
 
    if (mode==TOP_VIEW) {
        vp = make_WSGraph(gd.xs, gd.ys, 1);
        if (vp.gp==NULL) return vp;
 
        for (k=0; k<gd.zs; k++) {
            cz = k*psize;
            for (j=0; j<gd.ys; j++) {
                cy = j*gd.xs;
                for (i=0; i<gd.xs; i++) {
                    cx = cz + cy + i;
                    cw = cy + i;
                    if (gd.gp[cx]!=0) vp.gp[cw] = Max(vp.gp[cw], gd.gp[cx]);
                }
            }
        }
    }
 
    else if (mode==TOP_VIEW_DEPTH) {
        vp = make_WSGraph(gd.xs, gd.ys, 1);
        if (vp.gp==NULL) return vp;
 
        for (k=0; k<gd.zs; k++) {
            cz = k*psize;
            for (j=0; j<gd.ys; j++) {
                cy = j*gd.xs;
                for (i=0; i<gd.xs; i++) {
                    cx = cz + cy + i;
                    cw = cy + i;
                    if (gd.gp[cx]!=0) vp.gp[cw] = Max(vp.gp[cw], (gd.zs-k)+100);
                }
            }
        }
    }
 
    else if (mode==SIDEX_VIEW) {
        vp = make_WSGraph(gd.ys, gd.zs, 1);
        if (vp.gp==NULL) return vp;
 
        for (k=0; k<gd.zs; k++) {
            cz = k*psize;
            yy = k;
            for (j=0; j<gd.ys; j++) {
                cy = j*gd.xs;
                xx = gd.ys - 1 - j;
                for (i=0; i<gd.xs; i++) {
                    cx = cz + cy + i;
                    cw = yy*vp.xs + xx;
                    if (gd.gp[cx]!=0) vp.gp[cw] = Max(vp.gp[cw], gd.gp[cx]);
                }
            }
        }
    }
 
    else if (mode==SIDEY_VIEW) {
        vp = make_WSGraph(gd.xs, gd.zs, 1);
        if (vp.gp==NULL) return vp;
 
        for (k=0; k<gd.zs; k++) {
            cz = k*psize;
            yy = k;
            for (j=0; j<gd.ys; j++) {
                cy = j*gd.xs;
                for (i=0; i<gd.xs; i++) {
                    cx = cz + cy + i;
                    xx = i;
                    cw = yy*vp.xs + xx;
                    if (gd.gp[cx]!=0) vp.gp[cw] = Max(vp.gp[cw], gd.gp[cx]);
                }
            }
        }
    }
 
    else {
        memset(&vp, 0, sizeof(WSGraph));
        vp.state = JBXL_GRAPH_IVDARG_ERROR;
        //fprintf(stderr,"TO2D: unknown mode = %d.\n",mode);
    }
 
    return vp;
}

References WSGraph::gp, JBXL_GRAPH_IVDARG_ERROR, JBXL_GRAPH_NODATA_ERROR, make_WSGraph(), Max, SIDEX_VIEW, SIDEY_VIEW, WSGraph::state, TOP_VIEW, TOP_VIEW_DEPTH, WSGraph::xs, WSGraph::ys, and WSGraph::zs.

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vfNabra()

VSGraph vfNabra

(

FSGraph

vp

)

VSGraph vfNabra(FSGraph vp)

グラフィックデータの ナブラを実数計算する(Sobel)． 精度が上昇するが時間がかかる．

Parameters

vp	計算対象となるグラフィックデータ構造体．

Returns

ナブラ．ベクトル型グラフィックデータ．

Definition at line 1012 of file gmt.c.

{
    int    i, xs, ys, zs;
    double xx, yy, zz;
    FSGraph px, py, pz;
    VSGraph pn;
     
    memset(&pn, 0, sizeof(VSGraph));
    if (vp.gp==NULL) {
        pn.state = JBXL_GRAPH_NODATA_ERROR;
        return pn;
    }
 
    xs = vp.xs;
    ys = vp.ys;
    zs = vp.zs;
    pn = make_VSGraph(xs, ys, zs);
    if (pn.gp==NULL) return pn;
 
    px = fxSobel(vp);
    if (px.gp==NULL) {
        free_VSGraph(&pn);
        pn.state = px.state;
        return pn;
    }
    py = fySobel(vp);
    if (py.gp==NULL) {
        free_VSGraph(&pn);
        free(px.gp);
        pn.state = py.state;
        return pn;
    }
 
    if (vp.zs<3) {
        for (i=0; i<xs*ys; i++) {
            xx = px.gp[i];
            yy = py.gp[i];
            pn.gp[i] = set_vector(xx, yy, 0.0);
            unit_vector(pn.gp[i]);
        }
    }
    else {
        pz = fzSobel(vp);
        if (pz.gp==NULL) {
            free_VSGraph(&pn);
            free(px.gp);
            free(py.gp);
            pn.state = pz.state;
            return pn;
        }
 
        for (i=0; i<xs*ys*zs; i++) {
            xx = px.gp[i];
            yy = py.gp[i];
            zz = pz.gp[i];
            pn.gp[i] = set_vector(xx, yy, zz);
            unit_vector(pn.gp[i]);
        }
        free(pz.gp);
    }
 
    free(px.gp);
    free(py.gp);
 
    return pn;
}

References free_VSGraph, fxSobel(), fySobel(), fzSobel(), FSGraph::gp, VSGraph::gp, JBXL_GRAPH_NODATA_ERROR, make_VSGraph(), set_vector(), FSGraph::state, VSGraph::state, unit_vector(), FSGraph::xs, FSGraph::ys, and FSGraph::zs.

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vNabra()

VSGraph vNabra

(

WSGraph

vp

)

VSGraph vNabra(WSGraph vp)

グラフィックデータの ナブラを計算する(Sobel)．

Parameters

vp	計算対象となるグラフィックデータ構造体．

Returns

ナブラ．ベクトル型グラフィックデータ．

Definition at line 935 of file gmt.c.

{
    int   i, xs, ys, zs;
    double  xx, yy, zz;
    WSGraph px, py, pz;
    VSGraph pn;
     
    memset(&pn, 0, sizeof(VSGraph));
    if (vp.gp==NULL) {
        pn.state = JBXL_GRAPH_NODATA_ERROR;
        return pn;
    }
 
    xs = vp.xs;
    ys = vp.ys;
    zs = vp.zs;
    pn = make_VSGraph(xs, ys, zs);
    if (pn.gp==NULL) return pn;
 
    px = xSobel(vp);
    if (px.gp==NULL) {
        free_VSGraph(&pn);
        pn.state = px.state;
        return pn;
    }
    py = ySobel(vp);
    if (py.gp==NULL) {
        free_VSGraph(&pn);
        free(px.gp);
        pn.state = py.state;
        return pn;
    }
 
    if (vp.zs<3) {
        for (i=0; i<xs*ys; i++) {
            xx = px.gp[i];
            yy = py.gp[i];
            pn.gp[i] = set_vector(xx, yy, 0.0);
            unit_vector(pn.gp[i]);
        }
    }
    else {
        pz = zSobel(vp);
        if (pz.gp==NULL) {
            free_VSGraph(&pn);
            free(px.gp);
            free(py.gp);
            pn.state = pz.state;
            return pn;
        }
 
        for (i=0; i<xs*ys*zs; i++) {
            xx = px.gp[i];
            yy = py.gp[i];
            zz = pz.gp[i];
            pn.gp[i] = set_vector(xx, yy, zz);
            unit_vector(pn.gp[i]);
        }
        free(pz.gp);
    }
 
    free(px.gp);
    free(py.gp);
 
    return pn;
}

References free_VSGraph, WSGraph::gp, VSGraph::gp, JBXL_GRAPH_NODATA_ERROR, make_VSGraph(), set_vector(), WSGraph::state, VSGraph::state, unit_vector(), WSGraph::xs, xSobel(), WSGraph::ys, ySobel(), WSGraph::zs, and zSobel().

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WSCurve()

WSGraph WSCurve	(	WSGraph	gx,
		int	mode,
		int	cc )

WSGraph WSCurve(WSGraph gx, int mode, int cc)

曲面の形状をグラフィックデータ(輝度値)に変換する．

Parameters

gx	操作対象となる曲面形状情報3の入ったグラフィックデータ．
mode	輝度値に変換する曲面の形状．指定できる形状は ALL, FLAT, PIT, SADDLE_RIDGE, SADDLE_VALLEY, NONE_SHAPE, MINIMAL, RIDGE, VALLEY, PEAK. ALLを指定した場合,形状は違った輝度値に変換される．
cc	modeに ALLを指定しなかった場合,指定された曲面をこの輝度値に変換する．

Returns

曲面の形状情報を代入した sWord型グラフィックデータ．

Note

FLAT=500, PIT=1000, SADDLE_RIDGE=1500, SADDLE_VALLEY=2000, NONE_SHAPE=2500, MINIMAL=3000, RIDGE=3500, VALLEY=4000, PEAK=4500

Definition at line 1462 of file gmt.c.

{
    int  i;
    FSGraph wp;
    VSGraph xp;
    WSGraph vp;
 
    memset(&vp, 0, sizeof(WSGraph));
    if (gx.gp==NULL) {
        vp.state = JBXL_GRAPH_NODATA_ERROR;
        return vp;
    }
 
    wp = W2FSGraph(gx);
    if (gx.zs<5) xp = curvature(wp);
    else         xp = curvature3D(wp);
 
    vp = curv2WSGraph(xp);
    freeNull(wp.gp);
    freeNull(xp.gp);
    if (vp.gp==NULL) return vp;
 
    if (mode==ALL) {
        for (i=0; i<vp.xs*vp.ys*vp.zs; i++) {
            if    (vp.gp[i]==FLAT)            vp.gp[i] = 500;
            else if (vp.gp[i]==PIT)           vp.gp[i] = 1000;
            else if (vp.gp[i]==SADDLE_RIDGE)  vp.gp[i] = 1500;
            else if (vp.gp[i]==SADDLE_VALLEY) vp.gp[i] = 2000;
            else if (vp.gp[i]==NONE_SHAPE)    vp.gp[i] = 2500;
            else if (vp.gp[i]==MINIMAL)       vp.gp[i] = 3000;
            else if (vp.gp[i]==RIDGE)         vp.gp[i] = 3500;
            else if (vp.gp[i]==VALLEY)        vp.gp[i] = 4000;
            else if (vp.gp[i]==PEAK)          vp.gp[i] = 4500;
            else                              vp.gp[i] = 0;
        }
    }
    else {
        for (i=0; i<vp.xs*vp.ys*vp.zs; i++) {
            if ((vp.gp[i]&mode)!=0) vp.gp[i] = cc;
            else                    vp.gp[i] = 0;
        }
    }
    return vp;
}

References ALL, curv2WSGraph(), curvature(), curvature3D(), FLAT, freeNull, WSGraph::gp, FSGraph::gp, VSGraph::gp, JBXL_GRAPH_NODATA_ERROR, MINIMAL, NONE_SHAPE, PEAK, PIT, RIDGE, SADDLE_RIDGE, SADDLE_VALLEY, WSGraph::state, VALLEY, W2FSGraph(), WSGraph::xs, WSGraph::ys, and WSGraph::zs.

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xSobel()

WSGraph xSobel

(

WSGraph

vp

)

WSGraph xSobel(WSGraph vp)

グラフィックデータの x方向微分(Sobel)を計算する．

Parameters

vp	計算対象となるグラフィックデータ構造体．

Returns

処理されたグラフィックデータ．

Definition at line 90 of file gmt.c.

{
    int  i, j, k;
    int  da, db, dc, dd, de, nr;
    WSGraph xp;
    
    memset(&xp, 0, sizeof(WSGraph));
    if (vp.gp==NULL) {
        xp.state = JBXL_GRAPH_NODATA_ERROR;
        return xp;
    }
    xp.state = JBXL_NORMAL;
 
    if (vp.zs<=0) vp.zs = 1; 
    xp = make_WSGraph(vp.xs, vp.ys, vp.zs);
    if (xp.gp==NULL) return xp;
 
    for (k=0; k<vp.zs; k++) {
        for (j=1; j<vp.ys-1; j++) {
            for (i=1; i<vp.xs-1; i++) {
                da = Vx(vp, i+1, j-1, k) - Vx(vp, i-1, j-1, k);
                db = Vx(vp, i+1, j,   k) - Vx(vp, i-1, j,   k);
                dc = Vx(vp, i+1, j+1, k) - Vx(vp, i-1, j+1, k);
                if (k==0 || k==vp.zs-1) {
                    dd = de = 0;
                    nr = 8;
                }
                else {
                    dd = Vx(vp, i+1, j, k-1) - Vx(vp, i-1, j, k-1);
                    de = Vx(vp, i+1, j, k+1) - Vx(vp, i-1, j, k+1);
                    nr = 12;
                }
                Vx(xp, i, j, k) = (sWord)((da + 2*db + dc + dd + de)/nr);
            }
        }
    }
 
    return xp;
}

References WSGraph::gp, JBXL_GRAPH_NODATA_ERROR, JBXL_NORMAL, make_WSGraph(), WSGraph::state, Vx, WSGraph::xs, WSGraph::ys, and WSGraph::zs.

Referenced by Nabra(), and vNabra().

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xxSobel()

WSGraph xxSobel

(

WSGraph

vp

)

WSGraph xxSobel(WSGraph vp)

グラフィックデータの x方向の2階微分(Sobel)を計算する．

Parameters

vp	計算対象となるグラフィックデータ構造体．

Returns

処理されたグラフィックデータ．

Definition at line 414 of file gmt.c.

{
    int  x, y, z, xs, ys, zs, cx, cy, cz, ps;
    int  da, db, dc, dd, de;
    int  df, dg, dh, di, dj, dk, dl, dm;
    WSGraph px;
 
    memset(&px, 0, sizeof(WSGraph));
    if (vp.gp==NULL) {
        px.state = JBXL_GRAPH_NODATA_ERROR;
        return px;
    }
 
    xs = vp.xs;
    ys = vp.ys;
    zs = vp.zs;
    ps = xs*ys;
 
    if (zs<5) { 
        px = make_WSGraph(xs, ys, 1);
        if (px.gp==NULL) return px;
 
        for (y=2; y<ys-2; y++) {
            cy = y*xs;
            for (x=2; x<xs-2; x++) {
                cx = cy + x;
                da = vp.gp[cx-2*xs+2] - 2*vp.gp[cx-2*xs] + vp.gp[cx-2*xs-2];
                db = vp.gp[cx  -xs+2] - 2*vp.gp[cx  -xs] + vp.gp[cx  -xs-2];
                dc = vp.gp[cx     +2] - 2*vp.gp[cx]      + vp.gp[cx     -2];
                dd = vp.gp[cx  +xs+2] - 2*vp.gp[cx  +xs] + vp.gp[cx  +xs-2];
                de = vp.gp[cx+2*xs+2] - 2*vp.gp[cx+2*xs] + vp.gp[cx+2*xs-2];
                px.gp[cx] = (sWord)((da + 4*db + 6*dc + 4*dd + de)/64);
            }
        }
    }
 
    else {
        px = make_WSGraph(xs, ys, zs);
        if (px.gp==NULL) return px;
 
        for (z=2; z<zs-2; z++) {
            cz = z*ps;
            for (y=2; y<ys-2; y++) {
                cy = cz + y*xs;
                for (x=2; x<xs-2; x++) {
                    cx = cy + x;
                    da = vp.gp[cx   +2]    - 2*vp.gp[cx]       + vp.gp[cx-2];    
                    db = vp.gp[cx+xs+2]    - 2*vp.gp[cx+xs]    + vp.gp[cx+xs-2];     
                    dc = vp.gp[cx-xs+2]    - 2*vp.gp[cx-xs]    + vp.gp[cx-xs-2];    
                    dd = vp.gp[cx+ps+2]    - 2*vp.gp[cx+ps]    + vp.gp[cx+ps-2];     
                    de = vp.gp[cx-ps+2]    - 2*vp.gp[cx-ps]    + vp.gp[cx-ps-2];     
                    df = vp.gp[cx+xs+ps+2] - 2*vp.gp[cx+xs+ps] + vp.gp[cx+xs+ps-2];
                    dg = vp.gp[cx+xs-ps+2] - 2*vp.gp[cx+xs-ps] + vp.gp[cx+xs-ps-2];
                    dh = vp.gp[cx-xs+ps+2] - 2*vp.gp[cx-xs+ps] + vp.gp[cx-xs+ps-2];
                    di = vp.gp[cx-xs-ps+2] - 2*vp.gp[cx-xs-ps] + vp.gp[cx-xs-ps-2];
                    dj = vp.gp[cx+2*xs+2]  - 2*vp.gp[cx+2*xs]  + vp.gp[cx+2*xs-2];  
                    dk = vp.gp[cx-2*xs+2]  - 2*vp.gp[cx-2*xs]  + vp.gp[cx-2*xs-2];  
                    dl = vp.gp[cx+2*ps+2]  - 2*vp.gp[cx+2*ps]  + vp.gp[cx+2*ps-2]; 
                    dm = vp.gp[cx-2*ps+2]  - 2*vp.gp[cx-2*ps]  + vp.gp[cx-2*ps-2]; 
                    px.gp[cx] = (sWord)((8*da+4*(db+dc+dd+de)+2*(df+dg+dh+di)+dj+dk+dl+dm)/144);
                }
            }
        }
    }
 
    return px;
}

References WSGraph::gp, JBXL_GRAPH_NODATA_ERROR, make_WSGraph(), WSGraph::state, WSGraph::xs, WSGraph::ys, and WSGraph::zs.

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ySobel()

WSGraph ySobel

(

WSGraph

vp

)

WSGraph ySobel(WSGraph vp)

グラフィックデータの y方向微分(Sobel)を計算する．

Parameters

vp	計算対象となるグラフィックデータ構造体．

Returns

処理されたグラフィックデータ．

Definition at line 188 of file gmt.c.

{
    int  i, j, k;
    int  da, db, dc, dd, de, nr;
    WSGraph xp;
    
    memset(&xp, 0, sizeof(WSGraph));
    if (vp.gp==NULL) {
        xp.state = JBXL_GRAPH_NODATA_ERROR;
        return xp;
    }
 
    if (vp.zs<=0) vp.zs = 1; 
    xp = make_WSGraph(vp.xs, vp.ys, vp.zs);
    if (xp.gp==NULL) return xp;
 
    for (k=0; k<vp.zs; k++) {
        for (j=1; j<vp.ys-1; j++) {
            for (i=1; i<vp.xs-1; i++) {
                da = Vx(vp, i-1, j+1, k) - Vx(vp, i-1, j-1, k);
                db = Vx(vp, i,   j+1, k) - Vx(vp, i,   j-1, k);
                dc = Vx(vp, i+1, j+1, k) - Vx(vp, i+1, j-1, k);
                if (k==0 || k==vp.zs-1) {
                    dd = de = 0;
                    nr = 8;
                }
                else {
                    dd = Vx(vp, i, j+1, k-1) - Vx(vp, i, j-1, k-1);
                    de = Vx(vp, i, j+1, k+1) - Vx(vp, i, j-1, k+1);
                    nr = 12;
                }
                Vx(xp, i, j, k) = (sWord)((da + 2*db + dc + dd + de)/nr);
            }
        }
    }
 
    return xp;
}

References WSGraph::gp, JBXL_GRAPH_NODATA_ERROR, make_WSGraph(), WSGraph::state, Vx, WSGraph::xs, WSGraph::ys, and WSGraph::zs.

Referenced by Nabra(), and vNabra().

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yySobel()

WSGraph yySobel

(

WSGraph

vp

)

WSGraph yySobel(WSGraph vp)

グラフィックデータの y方向の2階微分(Sobel)を計算する．

Parameters

vp	計算対象となるグラフィックデータ構造体．

Returns

処理されたグラフィックデータ．

Definition at line 569 of file gmt.c.

{
    int  x, y, z, xs, ys, zs, cx, cy, cz, ps;
    int  da, db, dc, dd, de;
    int  df, dg, dh, di, dj, dk, dl, dm;
    WSGraph py;
    
    memset(&py, 0, sizeof(WSGraph));
    if (vp.gp==NULL) {
        py.state = JBXL_GRAPH_NODATA_ERROR;
        return py;
    }
 
    xs = vp.xs;
    ys = vp.ys;
    zs = vp.zs;
    ps = xs*ys;
 
    if (zs<5) { 
        py = make_WSGraph(xs, ys, 1);
        if (py.gp==NULL) return py;
 
        for (y=2; y<ys-2; y++) {
            cy = y*xs;
            for (x=2; x<xs-2; x++) {
                cx = cy + x;
                da = vp.gp[cx+2*xs-2] - 2*vp.gp[cx-2] + vp.gp[cx-2*xs-2];
                db = vp.gp[cx+2*xs-1] - 2*vp.gp[cx-1] + vp.gp[cx-2*xs-1]; 
                dc = vp.gp[cx+2*xs]   - 2*vp.gp[cx]   + vp.gp[cx-2*xs]; 
                dd = vp.gp[cx+2*xs+1] - 2*vp.gp[cx+1] + vp.gp[cx-2*xs+1]; 
                de = vp.gp[cx+2*xs+2] - 2*vp.gp[cx+2] + vp.gp[cx-2*xs+2];
                py.gp[cx] = (sWord)((da + 4*db + 6*dc + 4*dd + de)/64);
            }
        }
    }
    else {
        py = make_WSGraph(xs, ys, zs);
        if (py.gp==NULL) return py;
 
        for (z=2; z<zs-2; z++) {
            cz = z*ps;
            for (y=2; y<ys-2; y++) {
                cy = cz + y*xs;
                for (x=2; x<xs-2; x++) {
                    cx = cy + x;
                    da = vp.gp[cx+2*xs]      - 2*vp.gp[cx]      + vp.gp[cx-2*xs];    
                    db = vp.gp[cx+1+2*xs]    - 2*vp.gp[cx+1]    + vp.gp[cx+1-2*xs]; 
                    dc = vp.gp[cx-1+2*xs]    - 2*vp.gp[cx-1]    + vp.gp[cx-1-2*xs];
                    dd = vp.gp[cx+ps+2*xs]   - 2*vp.gp[cx+ps]   + vp.gp[cx+ps-2*xs]; 
                    de = vp.gp[cx-ps+2*xs]   - 2*vp.gp[cx-ps]   + vp.gp[cx-ps-2*xs]; 
                    df = vp.gp[cx+1+ps+2*xs] - 2*vp.gp[cx+1+ps] + vp.gp[cx+1+ps-2*xs]; 
                    dg = vp.gp[cx+1-ps+2*xs] - 2*vp.gp[cx+1-ps] + vp.gp[cx+1-ps-2*xs]; 
                    dh = vp.gp[cx-1+ps+2*xs] - 2*vp.gp[cx-1+ps] + vp.gp[cx-1+ps-2*xs]; 
                    di = vp.gp[cx-1-ps+2*xs] - 2*vp.gp[cx-1-ps] + vp.gp[cx-1-ps-2*xs]; 
                    dj = vp.gp[cx+2+2*xs]    - 2*vp.gp[cx+2]    + vp.gp[cx+2-2*xs];
                    dk = vp.gp[cx-2+2*xs]    - 2*vp.gp[cx-2]    + vp.gp[cx-2-2*xs];
                    dl = vp.gp[cx+2*ps+2*xs] - 2*vp.gp[cx+2*ps] + vp.gp[cx+2*ps-2*xs];
                    dm = vp.gp[cx-2*ps+2*xs] - 2*vp.gp[cx-2*ps] + vp.gp[cx-2*ps-2*xs];
                    py.gp[cx] = (sWord)((8*da+4*(db+dc+dd+de)+2*(df+dg+dh+di)+dj+dk+dl+dm)/144);
                }
            }
        }
    }
 
    return py;
}

References WSGraph::gp, JBXL_GRAPH_NODATA_ERROR, make_WSGraph(), WSGraph::state, WSGraph::xs, WSGraph::ys, and WSGraph::zs.

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zSobel()

WSGraph zSobel

(

WSGraph

vp

)

WSGraph zSobel(WSGraph vp)

グラフィックデータの z方向微分(Sobel)を計算する．

Parameters

vp	計算対象となるグラフィックデータ構造体．

Returns

処理されたグラフィックデータ．

Definition at line 285 of file gmt.c.

{
    int  i, j, k;
    int  da, db, dc, dd, de;
    WSGraph xp;
    
    memset(&xp, 0, sizeof(WSGraph));
    if (vp.gp==NULL) {
        xp.state = JBXL_GRAPH_NODATA_ERROR;
        return xp;
    }
 
    if (vp.zs<=1) {
        //fprintf(stderr,"ZSOBEL: no 3D data inputed.\n");
        xp.state = JBXL_GRAPH_IVDARG_ERROR;
        return xp;
    }
 
    xp = make_WSGraph(vp.xs, vp.ys, vp.zs);
    if (xp.gp==NULL) return xp;
 
    for (k=1; k<vp.zs-1; k++) {
        for (j=1; j<vp.ys-1; j++) {
            for (i=1; i<vp.xs-1; i++) {
                da = Vx(vp, i-1, j, k+1) - Vx(vp, i-1, j, k-1);
                db = Vx(vp, i+1, j, k+1) - Vx(vp, i+1, j, k-1);
                dc = Vx(vp, i,   j, k+1) - Vx(vp, i,   j, k-1);
                dd = Vx(vp, i, j-1, k+1) - Vx(vp, i, j-1, k-1);
                de = Vx(vp, i, j+1, k+1) - Vx(vp, i, j+1, k-1);
                Vx(xp, i, j, k) = (sWord)((da + db + 2*dc + dd + de)/12);
            }
        }
    }
 
    for (j=1; j<vp.ys-1; j++) {
        for (i=1; i<vp.xs-1; i++) {
            da = Vx(vp, i-1, j, 1) - Vx(vp, i-1, j, 0);
            db = Vx(vp, i+1, j, 1) - Vx(vp, i+1, j, 0);
            dc = Vx(vp, i,   j, 1) - Vx(vp, i,   j, 0);
            dd = Vx(vp, i, j-1, 1) - Vx(vp, i, j-1, 0);
            de = Vx(vp, i, j+1, 1) - Vx(vp, i, j+1, 0);
            Vx(xp, i, j, 0) = (sWord)((da + db + 2*dc + dd + de)/12);
 
            da = Vx(vp, i-1, j, vp.zs-1) - Vx(vp, i-1, j, vp.zs-2);
            db = Vx(vp, i+1, j, vp.zs-1) - Vx(vp, i+1, j, vp.zs-2);
            dc = Vx(vp, i,   j, vp.zs-1) - Vx(vp, i,   j, vp.zs-2);
            dd = Vx(vp, i, j-1, vp.zs-1) - Vx(vp, i, j-1, vp.zs-2);
            de = Vx(vp, i, j+1, vp.zs-1) - Vx(vp, i, j+1, vp.zs-2);
            Vx(xp, i, j, vp.zs-1) = (sWord)((da + db + 2*dc + dd + de)/12);
        }
    }
 
    return xp;
}

References WSGraph::gp, JBXL_GRAPH_IVDARG_ERROR, JBXL_GRAPH_NODATA_ERROR, make_WSGraph(), WSGraph::state, Vx, WSGraph::xs, WSGraph::ys, and WSGraph::zs.

Referenced by Nabra(), and vNabra().

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zzSobel()

WSGraph zzSobel

(

WSGraph

vp

)

WSGraph zzSobel(WSGraph vp)

グラフィックデータの z方向の2階微分(Sobel)を計算する．

Parameters

vp	計算対象となるグラフィックデータ構造体．

Returns

処理されたグラフィックデータ．

Definition at line 722 of file gmt.c.

{
    int  x, y, z, xs, ys, zs, cx, cy, cz, ps;
    int  da, db, dc, dd, de;
    int  df, dg, dh, di, dj, dk, dl, dm;
    WSGraph pz;
    
    memset(&pz, 0, sizeof(WSGraph));
    if (vp.gp==NULL) {
        pz.state = JBXL_GRAPH_NODATA_ERROR;
        return pz;
    }
 
    if (vp.zs<5) {
        //fprintf(stderr,"ZZSOBEL: no 3D data inputed.\n");
        pz.state = JBXL_GRAPH_IVDARG_ERROR;
        return pz;
    }
 
    xs = vp.xs;
    ys = vp.ys;
    zs = vp.zs;
    ps = xs*ys;
    pz = make_WSGraph(xs, ys, zs);
    if (pz.gp==NULL) return pz;
 
    for (z=2; z<zs-2; z++) {
        cz = z*ps;
        for (y=2; y<ys-2; y++) {
            cy = cz + y*xs;
            for (x=2; x<xs-2; x++) {
                cx = cy + x;
                da = vp.gp[cx   +2*ps]   - 2*vp.gp[cx]       + vp.gp[cx   -2*ps];    
                db = vp.gp[cx+1 +2*ps]   - 2*vp.gp[cx+1]     + vp.gp[cx+1 -2*ps]; 
                dc = vp.gp[cx-1 +2*ps]   - 2*vp.gp[cx-1]     + vp.gp[cx-1 -2*ps];
                dd = vp.gp[cx+xs+2*ps]   - 2*vp.gp[cx+xs]    + vp.gp[cx+xs-2*ps]; 
                de = vp.gp[cx-xs+2*ps]   - 2*vp.gp[cx-xs]    + vp.gp[cx-xs-2*ps]; 
                df = vp.gp[cx+1+xs+2*ps] - 2*vp.gp[cx+1+xs]  + vp.gp[cx+1+xs-2*ps]; 
                dg = vp.gp[cx+1-xs+2*ps] - 2*vp.gp[cx+1-xs]  + vp.gp[cx+1-xs-2*ps]; 
                dh = vp.gp[cx-1+xs+2*ps] - 2*vp.gp[cx-1+xs]  + vp.gp[cx-1+xs-2*ps]; 
                di = vp.gp[cx-1-xs+2*ps] - 2*vp.gp[cx-1-xs]  + vp.gp[cx-1-xs-2*ps]; 
                dj = vp.gp[cx+2   +2*ps] - 2*vp.gp[cx+2]     + vp.gp[cx+2   -2*ps];
                dk = vp.gp[cx-2   +2*ps] - 2*vp.gp[cx-2]     + vp.gp[cx-2   -2*ps];
                dl = vp.gp[cx+2*xs+2*ps] - 2*vp.gp[cx+2*xs]  + vp.gp[cx+2*xs-2*ps];
                dm = vp.gp[cx-2*xs+2*ps] - 2*vp.gp[cx-2*xs]  + vp.gp[cx-2*xs-2*ps];
                pz.gp[cx] = (sWord)((8*da+4*(db+dc+dd+de)+2*(df+dg+dh+di)+dj+dk+dl+dm)/144);
            }
        }
    }
 
    cz = ps;
    for (y=2; y<ys-2; y++) {
        cy = cz + y*xs;
        for (x=2; x<xs-2; x++) {
            cx = cy + x;
            da = vp.gp[cx   +2*ps]   - 2*vp.gp[cx];  
            db = vp.gp[cx+1 +2*ps]   - 2*vp.gp[cx+1]; 
            dc = vp.gp[cx-1 +2*ps]   - 2*vp.gp[cx-1];
            dd = vp.gp[cx+xs+2*ps]   - 2*vp.gp[cx+xs]; 
            de = vp.gp[cx-xs+2*ps]   - 2*vp.gp[cx-xs]; 
            df = vp.gp[cx+1+xs+2*ps] - 2*vp.gp[cx+1+xs]; 
            dg = vp.gp[cx+1-xs+2*ps] - 2*vp.gp[cx+1-xs]; 
            dh = vp.gp[cx-1+xs+2*ps] - 2*vp.gp[cx-1+xs]; 
            di = vp.gp[cx-1-xs+2*ps] - 2*vp.gp[cx-1-xs]; 
            dj = vp.gp[cx+2   +2*ps] - 2*vp.gp[cx+2];
            dk = vp.gp[cx-2   +2*ps] - 2*vp.gp[cx-2];
            dl = vp.gp[cx+2*xs+2*ps] - 2*vp.gp[cx+2*xs];
            dm = vp.gp[cx-2*xs+2*ps] - 2*vp.gp[cx-2*xs];
            pz.gp[cx] = (sWord)((8*da+4*(db+dc+dd+de)+2*(df+dg+dh+di)+dj+dk+dl+dm)/144);
        }
    }
 
    cz = (zs-2)*ps;
    for (y=2; y<ys-2; y++) {
        cy = cz + y*xs;
        for (x=2; x<xs-2; x++) {
            cx = cy + x;
            da = - 2*vp.gp[cx]      + vp.gp[cx   -2*ps];     
            db = - 2*vp.gp[cx+1]    + vp.gp[cx+1 -2*ps]; 
            dc = - 2*vp.gp[cx-1]    + vp.gp[cx-1 -2*ps];
            dd = - 2*vp.gp[cx+xs]   + vp.gp[cx+xs-2*ps]; 
            de = - 2*vp.gp[cx-xs]   + vp.gp[cx-xs-2*ps]; 
            df = - 2*vp.gp[cx+1+xs] + vp.gp[cx+1+xs-2*ps]; 
            dg = - 2*vp.gp[cx+1-xs] + vp.gp[cx+1-xs-2*ps]; 
            dh = - 2*vp.gp[cx-1+xs] + vp.gp[cx-1+xs-2*ps]; 
            di = - 2*vp.gp[cx-1-xs] + vp.gp[cx-1-xs-2*ps]; 
            dj = - 2*vp.gp[cx+2]    + vp.gp[cx+2   -2*ps];
            dk = - 2*vp.gp[cx-2]    + vp.gp[cx-2   -2*ps];
            dl = - 2*vp.gp[cx+2*xs] + vp.gp[cx+2*xs-2*ps];
            dm = - 2*vp.gp[cx-2*xs] + vp.gp[cx-2*xs-2*ps];
            pz.gp[cx] = (sWord)((8*da+4*(db+dc+dd+de)+2*(df+dg+dh+di)+dj+dk+dl+dm)/144);
        }
    }
 
    return pz;
}

References WSGraph::gp, JBXL_GRAPH_IVDARG_ERROR, JBXL_GRAPH_NODATA_ERROR, make_WSGraph(), WSGraph::state, WSGraph::xs, WSGraph::ys, and WSGraph::zs.

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