Bitmap与IplImage之间的转换

• //Karl_bmp.h
• //1.IplImage 2 CBitmap
• CBitmap * IplImage2CBitmap(const IplImage *pImage)
• {
• if( pImage && pImage->depth == IPL_DEPTH_8U )
• {
• HDC hDC=GetDC()->GetSafeHdc();
• uchar buffer[sizeof(BITMAPINFOHEADER) + 1024];
• BITMAPINFO* bmi = (BITMAPINFO*)buffer;
• int bmp_w = pImage->width, bmp_h = pImage->height;
• FillBitmapInfo( bmi, bmp_w, bmp_h, pImage->depth*pImage->nChannels, pImage->origin );
• char *pBits=NULL;
• HBITMAP hBitmap=CreateDIBSection(hDC,bmi,DIB_RGB_COLORS,(void**)&pBits,NULL,0);
• memcpy(pBits,pImage->imageData,pImage->imageSize);
• CBitmap *pBitmap=new CBitmap;
• pBitmap->Attach(hBitmap);
• return pBitmap;
• }
• else
• return NULL;
• }
• void FillBitmapInfo( BITMAPINFO* bmi, int width, int height, int bpp, int origin)
• {
• assert( bmi && width >= 0 && height >= 0 && (bpp == 8 || bpp == 24 || bpp == 32));
• BITMAPINFOHEADER* bmih = &(bmi->bmiHeader);
• memset( bmih, 0, sizeof(*bmih));
• bmih->biSize = sizeof(BITMAPINFOHEADER);
• bmih->biWidth = width;
• bmih->biHeight = origin ? abs(height) : -abs(height);
• bmih->biPlanes = 1;
• bmih->biBitCount = (unsigned short)bpp;
• bmih->biCompression = BI_RGB;
• if( bpp == 8 )
• {
• RGBQUAD* palette = bmi->bmiColors;
• int i;
• for( i = 0; i < 256; i++ )
• {
• palette[i].rgbBlue = palette[i].rgbGreen = palette[i].rgbRed = (BYTE)i;
• palette[i].rgbReserved = 0;
• }
• }
• }
• //2.CBitmap 2 IplImage
• IplImage *CBitmap2IplImage(const CBitmap *pBitmap)
• {
• DIBSECTION ds;
• pBitmap->GetObject(sizeof(ds),&ds);
• IplImage *pImage=cvCreateImage(cvSize(ds.dsBm.bmWidth,ds.dsBm.bmHeight),8,ds.dsBmih.biBitCount/8);
• memcpy(pImage->imageData,ds.dsBm.bmBits,pImage->imageSize);
• return pImage;
• }
• //3.HBITMAP 2 IplImage
• IplImage* hBitmap2Ipl(HBITMAP hBmp)
• {
• BITMAP bmp;
• ::GetObject(hBmp,sizeof(BITMAP),&bmp);//hBmp-->bmp
• int nChannels = bmp.bmBitsPixel == 1 ? 1 : bmp.bmBitsPixel/8 ;
• int depth = bmp.bmBitsPixel == 1 ? IPL_DEPTH_1U : IPL_DEPTH_8U;
• IplImage* img = cvCreateImage(cvSize(bmp.bmWidth,bmp.bmHeight),depth,nChannels); //cvCreateImageHeader
• //pBuffer = (char*)malloc(bmp.bmHeight*bmp.bmWidth*nChannels*sizeof(char));
• memcpy(img->imageData,(char*)(bmp.bmBits),bmp.bmHeight*bmp.bmWidth*nChannels);
• IplImage *dst = cvCreateImage(cvGetSize(img),img->depth,3);
• cvCvtColor(img,dst,CV_BGRA2BGR);
• cvReleaseImage(&img);
• return dst;
• }
• //4.IplImage 2 HBITMAP
• HBITMAP IplImage2hBitmap(IplImage* pImg)
• {
• BYTE tmp[sizeof(BITMAPINFO)+1024];
• BITMAPINFO *bmi = (BITMAPINFO*)tmp;
• HBITMAP hBmp;
• int i;
• memset(bmi,0,sizeof(BITMAPINFO));
• bmi->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
• bmi->bmiHeader.biWidth = pImg->width;
• bmi->bmiHeader.biHeight = pImg->height;
• bmi->bmiHeader.biPlanes = 1;
• bmi->bmiHeader.biBitCount = pImg->nChannels * pImg->depth;
• bmi->bmiHeader.biCompression = BI_RGB;
• bmi->bmiHeader.biSizeImage = 0;//if biCompression is BI_RGB,this can be 0
• bmi->bmiHeader.biClrImportant =0 ;
• switch(pImg->nChannels * pImg->depth)
• {
• case 8 :
• for(i=0 ; i < 256 ; i++){
• bmi->bmiColors[i].rgbBlue = i;
• bmi->bmiColors[i].rgbGreen= i;
• bmi->bmiColors[i].rgbRed= i;
• }
• break;
• case 32:
• case 24:
• ((DWORD*) bmi->bmiColors)[0] = 0x00FF0000;
• ((DWORD*) bmi->bmiColors)[1] = 0x0000FF00;
• ((DWORD*) bmi->bmiColors)[2] = 0x000000FF;
• break;
• }
• hBmp = ::CreateDIBSection(NULL,bmi,DIB_RGB_COLORS,NULL,0,0);
• SetDIBits(NULL,hBmp,0,pImg->height,pImg->imageData,bmi,DIB_RGB_COLORS);
• return hBmp;
• }
• //5.HBITMAP 2 CBitmap
• CBitmap HBITMAP2CBitmap(HBITMAP hbitmap)
• {
• CBitmap cbitmap;
• cbitmap.Attach(hbitmap);
• return cbitmap;
• }
• 6.CBitmap 2 HBITMAP
• HBITMAP CBitmap2HBITMAP(CBitmap bitmap )
• {
• HBITMAP bmp = HBITMAP(bitmap);
• //bmp=(HBITMAP)bitmap.GetSafeHandle();
• return bmp;
• }
• //7.BITMAP 2 CBitmap
• CBitmap BITMAP2CBitmap(BITMAP bmp)
• {
• CBitmap bitmap;
• bitmap.GetBitmap(&bmp);
• return bitmap;
• }
• //8.HBITMAP 2 BITMAP
• BITMAP HBITMAP2BITMAP(HBITMAP hBmp)
• {
• BITMAP bmp;
• ::GetObject(hBmp,sizeof(BITMAP),&bmp);//
• return bmp;
• }

Bitmap转为iplimage代码

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1. IplImage* BitmapToIplImage(HBITMAP hBmp)
2. {
3. BITMAP bmp;
5. GetObject(hBmp, sizeof(BITMAP), &bmp);
6. int depth = (bmp.bmBitsPixel == 1) ? IPL_DEPTH_1U : IPL_DEPTH_8U;
7. int nChannels = (bmp.bmBitsPixel == 1) ? 1 : bmp.bmBitsPixel/8;
9. IplImage* img = cvCreateImage(cvSize(bmp.bmWidth,bmp.bmHeight), depth, nChannels);
11. BYTE *pBuffer = new BYTE[bmp.bmHeight*bmp.bmWidth*nChannels];
12. GetBitmapBits(hBmp, bmp.bmHeight*bmp.bmWidth*nChannels, pBuffer);
13. memcpy(img->imageData, pBuffer, bmp.bmHeight*bmp.bmWidth*nChannels);
14. delete pBuffer;
16. IplImage *dst = cvCreateImage(cvGetSize(img), img->depth,3);
17. cvCvtColor(img, dst, CV_BGRA2BGR);
18. cvReleaseImage(&img);
19. return dst;
20. }

如果要从CBitmap转为IplImage，可以先将CBitmap转为BITMAP，再由BITMAP转为IplImage；

Cbitmap 转为 bitmap代码

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1. // CBitmap 转为 BITMAP
2. CBitmap bitmap；
3. bitmap.LoadBitmap(IDB_BITMAP);
4. BITMAP bmp;
5. bitmap.GetBitmap(&bmp);
7. // CBitmap与HBITMAP间的转换
8. // CBitmap转为HBITMAP
9. CBitmap bitmap;
10. bitmap.LoadBitmap(IDB_BITMAP);
11. HBITMAP bmp = HBITMAP(bitmap);
12. // HBITMAP转为CBitmap
13. HBITMAP hbitmap；
14. CBitmap bitmap;
15. bitmap.Attach(hbitmap);