📄 edge.c
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hPalette=CreatePalette(pPal);
LocalUnlock(hPal);
LocalFree(hPal);
}
hDc=GetDC(hWnd);
if(hPalette){
hPrevPalette=SelectPalette(hDc,hPalette,FALSE);
RealizePalette(hDc);
}
hBitmap=CreateDIBitmap(hDc, (LPBITMAPINFOHEADER)lpImgData, (LONG)CBM_INIT,
(LPSTR)lpImgData+sizeof(BITMAPINFOHEADER) +NumColors*sizeof(RGBQUAD),
(LPBITMAPINFO)lpImgData, DIB_RGB_COLORS);
if(hPalette && hPrevPalette){
SelectPalette(hDc,hPrevPalette,FALSE);
RealizePalette(hDc);
}
ReleaseDC(hWnd,hDc);
GlobalUnlock(hImgData);
return TRUE;
}
////////////////////////////////////////////////////////////////
BOOL TemplateOperation(HWND hWnd, int TemplateType)
{
DWORD OffBits,BufSize;
LPBITMAPINFOHEADER lpImgData;
LPSTR lpPtr;
HLOCAL hTempImgData;
LPBITMAPINFOHEADER lpTempImgData;
LPSTR lpTempPtr;
HDC hDc;
HFILE hf;
LONG x,y;
float coef;
float CoefArray[9];
float TempNum;
char filename[80];
switch(TemplateType){
case TEMPLATE_SMOOTH_BOX:
coef=(float)(1.0/9.0);
memcpy(CoefArray,Template_Smooth_Box,9*sizeof(float));
strcpy(filename,"c:\\smbox.bmp");
break;
case TEMPLATE_SMOOTH_GAUSS:
coef=(float)(1.0/16.0);
memcpy(CoefArray,Template_Smooth_Gauss,9*sizeof(float));
strcpy(filename,"c:\\smgauss.bmp");
break;
case TEMPLATE_SHARPEN_LAPLACIAN:
coef=(float)1.0;
memcpy(CoefArray,Template_Sharpen_Laplacian,9*sizeof(float));
strcpy(filename,"c:\\shlaplac.bmp");
break;
case TEMPLATE_SOBEL_H:
coef=(float)1.0;
memcpy(CoefArray,Template_HSobel,9*sizeof(float));
strcpy(filename,"c:\\hsobel.bmp");
break;
case TEMPLATE_SOBEL_V:
coef=(float)1.0;
memcpy(CoefArray,Template_VSobel,9*sizeof(float));
strcpy(filename,"c:\\vsobel.bmp");
break;
case TEMPLATE_ISOSOBEL_H:
coef=(float)1.0;
memcpy(CoefArray,Template_HIsoSobel,9*sizeof(float));
strcpy(filename,"c:\\hisobel.bmp");
break;
case TEMPLATE_ISOSOBEL_V:
coef=(float)1.0;
memcpy(CoefArray,Template_VIsoSobel,9*sizeof(float));
strcpy(filename,"c:\\visobel.bmp");
break;
}
OffBits=bf.bfOffBits-sizeof(BITMAPFILEHEADER);
BufSize=bf.bfSize-sizeof(BITMAPFILEHEADER);
if((hTempImgData=LocalAlloc(LHND,BufSize))==NULL)
{
MessageBox(hWnd,"Error alloc memory!","Error Message",MB_OK|MB_ICONEXCLAMATION);
return FALSE;
}
lpImgData=(LPBITMAPINFOHEADER)GlobalLock(hImgData);
lpTempImgData=(LPBITMAPINFOHEADER)LocalLock(hTempImgData);
lpPtr=(char *)lpImgData;
lpTempPtr=(char *)lpTempImgData;
memcpy(lpTempPtr,lpPtr,BufSize);
for(y=1;y<bi.biHeight-1;y++)
for(x=1;x<bi.biWidth-1;x++){
lpPtr=(char *)lpImgData+(BufSize-LineBytes-y*LineBytes)+x;
lpTempPtr=(char *)lpTempImgData+(BufSize-LineBytes-y*LineBytes)+x;
TempNum=(float)((unsigned char)*(lpPtr+LineBytes-1))*CoefArray[0];
TempNum+=(float)((unsigned char)*(lpPtr+LineBytes))*CoefArray[1];
TempNum+=(float)((unsigned char)*(lpPtr+LineBytes+1))*CoefArray[2];
TempNum+=(float)((unsigned char)*(lpPtr-1))*CoefArray[3];
TempNum+=(float)((unsigned char)*lpPtr)*CoefArray[4];
TempNum+=(float)((unsigned char)*(lpPtr+1))*CoefArray[5];
TempNum+=(float)((unsigned char)*(lpPtr-LineBytes-1))*CoefArray[6];
TempNum+=(float)((unsigned char)*(lpPtr-LineBytes))*CoefArray[7];
TempNum+=(float)((unsigned char)*(lpPtr-LineBytes+1))*CoefArray[8];
TempNum*=coef;
if(TempNum>255.0) *lpTempPtr=(BYTE)255;
else if(TempNum<0.0)
*lpTempPtr=(unsigned char)fabs(TempNum);
else *lpTempPtr=(BYTE)TempNum;
}
hDc=GetDC(hWnd);
if(hBitmap!=NULL)
DeleteObject(hBitmap);
hBitmap=CreateDIBitmap(hDc, (LPBITMAPINFOHEADER)lpTempImgData, (LONG)CBM_INIT,
(LPSTR)lpTempImgData+sizeof(BITMAPINFOHEADER) +NumColors*sizeof(RGBQUAD),
(LPBITMAPINFO)lpTempImgData, DIB_RGB_COLORS);
hf=_lcreat(filename,0);
_lwrite(hf,(LPSTR)&bf,sizeof(BITMAPFILEHEADER));
_lwrite(hf,(LPSTR)lpTempImgData,BufSize);
_lclose(hf);
ReleaseDC(hWnd,hDc);
LocalUnlock(hTempImgData);
LocalFree(hTempImgData);
GlobalUnlock(hImgData);
return TRUE;
}
////////////////////////////////////////////////////////////////
BOOL Outline(HWND hWnd)
{
DWORD BufSize;
LPBITMAPINFOHEADER lpImgData;
LPSTR lpPtr;
HLOCAL hTempImgData;
LPBITMAPINFOHEADER lpTempImgData;
LPSTR lpTempPtr;
HDC hDc;
HFILE hf;
LONG x,y;
int num;
int nw,n,ne,w,e,sw,s,se;
if( NumColors!=256){
MessageBox(hWnd,"Must be a mono bitmap with grayscale palette!","Error Message",MB_OK|MB_ICONEXCLAMATION);
return FALSE;
}
BufSize=bf.bfSize-sizeof(BITMAPFILEHEADER);
if((hTempImgData=LocalAlloc(LHND,BufSize))==NULL)
{
MessageBox(hWnd,"Error alloc memory!","Error Message",MB_OK|MB_ICONEXCLAMATION);
return FALSE;
}
lpImgData=(LPBITMAPINFOHEADER)GlobalLock(hImgData);
lpTempImgData=(LPBITMAPINFOHEADER)LocalLock(hTempImgData);
//copy image data
memcpy(lpTempImgData,lpImgData,BufSize);
for (y=1;y<bi.biHeight-1;y++){
lpPtr=(char *)lpImgData+(BufSize-LineBytes-y*LineBytes);
lpTempPtr=(char *)lpTempImgData+(BufSize-LineBytes-y*LineBytes);
for (x=1;x<bi.biWidth-1;x++){
if(*(lpPtr+x)==0){
nw=(unsigned char)*(lpPtr+x+LineBytes-1);
n=(unsigned char)*(lpPtr+x+LineBytes);
ne=(unsigned char)*(lpPtr+x+LineBytes+1);
w=(unsigned char)*(lpPtr+x-1);
e=(unsigned char)*(lpPtr+x+1);
sw=(unsigned char)*(lpPtr+x-LineBytes-1);
s=(unsigned char)*(lpPtr+x-LineBytes);
se=(unsigned char)*(lpPtr+x-LineBytes+1);
num=nw+n+ne+w+e+sw+s+se;
if(num==0)
*(lpTempPtr+x)=(unsigned char)255;
}
}
}
if(hBitmap!=NULL)
DeleteObject(hBitmap);
hDc=GetDC(hWnd);
hBitmap=CreateDIBitmap(hDc, (LPBITMAPINFOHEADER)lpTempImgData, (LONG)CBM_INIT,
(LPSTR)lpTempImgData+sizeof(BITMAPINFOHEADER) +NumColors*sizeof(RGBQUAD),
(LPBITMAPINFO)lpTempImgData, DIB_RGB_COLORS);
hf=_lcreat("c:\\outline.bmp",0);
_lwrite(hf,(LPSTR)&bf,sizeof(BITMAPFILEHEADER));
_lwrite(hf,(LPSTR)lpTempImgData,BufSize);
_lclose(hf);
ReleaseDC(hWnd,hDc);
LocalUnlock(hTempImgData);
LocalFree(hTempImgData);
GlobalUnlock(hImgData);
return TRUE;
}
////////////////////////////////////////////////////////////////
BOOL Hough(HWND hWnd)
{
typedef struct{
int topx;
int topy;
int botx;
int boty;
}MYLINE;
DWORD BufSize;
LPBITMAPINFOHEADER lpImgData;
LPSTR lpPtr;
HDC hDc;
LONG x,y;
long i,maxd;
int k;
int Dist,Alpha;
HGLOBAL hDistAlpha,hMyLine;
int *lpDistAlpha;
MYLINE *lpMyLine,*TempLine,MaxdLine;
static LOGPEN rlp={PS_SOLID,1,1,RGB(255,0,0)};
HPEN rhp;
if( NumColors!=256){
MessageBox(hWnd,"Must be a mono bitmap with grayscale palette!","Error Message",MB_OK|MB_ICONEXCLAMATION);
return FALSE;
}
Dist=(int)(sqrt( (double)bi.biWidth*bi.biWidth+(double)bi.biHeight*bi.biHeight)+0.5);
Alpha=180 /2 ; //0 degree to 178 degree , step is 2 degrees
if((hDistAlpha=GlobalAlloc(GHND,(DWORD)Dist* Alpha * sizeof(int)))==NULL){
MessageBox(hWnd,"Error alloc memory!","Error Message",MB_OK|MB_ICONEXCLAMATION);
return FALSE;
}
if((hMyLine=GlobalAlloc(GHND,(DWORD)Dist*Alpha*sizeof(MYLINE)))==NULL){
GlobalFree(hDistAlpha);
return FALSE;
}
BufSize=bf.bfSize-sizeof(BITMAPFILEHEADER);
lpImgData=(LPBITMAPINFOHEADER)GlobalLock(hImgData);
lpDistAlpha=(int *)GlobalLock(hDistAlpha);
lpMyLine=(MYLINE *)GlobalLock(hMyLine);
for (i=0;i<(long)Dist*Alpha;i++){
TempLine=(MYLINE*)(lpMyLine+i);
(*TempLine).boty=32767;
}
for (y=0;y<bi.biHeight;y++){
lpPtr=(char *)lpImgData+(BufSize-LineBytes-y*LineBytes);
for (x=0;x<bi.biWidth;x++)
if(*(lpPtr++)==0)
for (k=0;k<180;k+=2){
i=(long)fabs((x*cos(k*PI/180.0)+y*sin(k*PI/180.0)));
*(lpDistAlpha+i*Alpha+k/2)=*(lpDistAlpha+i*Alpha+k/2)+1;
TempLine=(MYLINE*)(lpMyLine+i*Alpha+k/2);
if(y> (*TempLine).topy){
(*TempLine).topx=x;
(*TempLine).topy=y;
}
if(y< (*TempLine).boty){
(*TempLine).botx=x;
(*TempLine).boty=y;
}
}
}
maxd=0;
for (i=0;i<(long)Dist*Alpha;i++){
TempLine=(MYLINE*)(lpMyLine+i);
k=*(lpDistAlpha+i);
if( k > maxd){
maxd=k;
MaxdLine.topx=(*TempLine).topx;
MaxdLine.topy=(*TempLine).topy;
MaxdLine.botx=(*TempLine).botx;
MaxdLine.boty=(*TempLine).boty;
}
}
hDc = GetDC(hWnd);
rhp = CreatePenIndirect(&rlp);
SelectObject(hDc,rhp);
MoveToEx(hDc,MaxdLine.botx,MaxdLine.boty,NULL);
LineTo(hDc,MaxdLine.topx,MaxdLine.topy);
DeleteObject(rhp);
ReleaseDC(hWnd,hDc);
GlobalUnlock(hImgData);
GlobalUnlock(hDistAlpha);
GlobalFree(hDistAlpha);
GlobalUnlock(hMyLine);
GlobalFree(hMyLine);
return TRUE;
}
////////////////////////////////////////////////////////////////
BOOL LapOfGauss(HWND hWnd)
{
DWORD OffBits,BufSize;
LPBITMAPINFOHEADER lpImgData;
LPSTR lpPtr;
HLOCAL hTempImgData;
LPBITMAPINFOHEADER lpTempImgData;
LPSTR lpTempPtr;
HDC hDc;
HFILE hf;
LONG x,y;
float coef;
float TempNum;
coef=(float)(1.0);
OffBits=bf.bfOffBits-sizeof(BITMAPFILEHEADER);
BufSize=bf.bfSize-sizeof(BITMAPFILEHEADER);
if((hTempImgData=LocalAlloc(LHND,BufSize))==NULL)
{
MessageBox(hWnd,"Error alloc memory!","Error Message",MB_OK|MB_ICONEXCLAMATION);
return FALSE;
}
lpImgData=(LPBITMAPINFOHEADER)GlobalLock(hImgData);
lpTempImgData=(LPBITMAPINFOHEADER)LocalLock(hTempImgData);
lpPtr=(char *)lpImgData;
lpTempPtr=(char *)lpTempImgData;
memcpy(lpTempPtr,lpPtr,BufSize);
for(y=2;y<bi.biHeight-2;y++)
for(x=2;x<bi.biWidth-2;x++){
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