HBITMAP to IplImage - -

                                      

IplImage* hBitmap2Ipl(HBITMAP hBmp)

{

BITMAP bmp;

::GetObject(hBmp,sizeof(BITMAP),&bmp);

int nChannels = bmp.bmBitsPixel == 1 ? 1 : bmp.bmBitsPixel/8 ;

int depth = bmp.bmBitsPixel == 1 ? IPL_DEPTH_1U : IPL_DEPTH_8U;

IplImage* img = cvCreateImageHeader( cvSize(bmp.bmWidth, bmp.bmHeight)

, depth, nChannels );

img->imageData =

(char*)malloc(bmp.bmHeight*bmp.bmWidth*nChannels*sizeof(char));

memcpy(img->imageData,(char*)(bmp.bmBits),bmp.bmHeight*bmp.bmWidth*nChannels);

return img;

}

void createDIB(IplImage* &pict){

IplImage * Red=cvCreateImage( cvSize(IMAGE_WIDTH,IMAGE_HEIGHT),

IPL_DEPTH_8U, 1 );

IplImage * Green=cvCreateImage( cvSize(IMAGE_WIDTH,IMAGE_HEIGHT),

IPL_DEPTH_8U, 1 );

IplImage * Blue=cvCreateImage( cvSize(IMAGE_WIDTH,IMAGE_HEIGHT),

IPL_DEPTH_8U, 1 );

cvSetImageCOI( pict, 3);

cvCopy(pict,Red);

cvSetImageCOI( pict, 2);

cvCopy(pict,Green);

cvSetImageCOI(pict, 1);

cvCopy(pict,Blue);

//Initialize the BMP display buffer

bmi = (BITMAPINFO*)buffer;

bmih = &(bmi->bmiHeader);

memset( bmih, 0, sizeof(*bmih));

bmih->biSize = sizeof(BITMAPINFOHEADER);

bmih->biWidth = IMAGE_WIDTH;

bmih->biHeight = IMAGE_HEIGHT; // -IMAGE_HEIGHT;

bmih->biPlanes = 1;

bmih->biCompression = BI_RGB;

bmih->biBitCount = 24;

palette = bmi->bmiColors;

for( int i = 0; i < 256; i++ ){

palette[i].rgbBlue = palette[i].rgbGreen = palette[i].rgbRed =

(BYTE)i;

palette[i].rgbReserved = 0;

}

cvReleaseImage(&Red);

cvReleaseImage(&Green);

cvReleaseImage(&Blue);

}