Bitmap與IplImage之間的轉換

• //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;
• }
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Bitmap轉爲iplimage代碼  

1. IplImage* BitmapToIplImage(HBITMAP hBmp)   
2. {   
3.     BITMAP bmp;       
4.        
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;       
8.        
9.     IplImage* img = cvCreateImage(cvSize(bmp.bmWidth,bmp.bmHeight), depth, nChannels);     
10.        
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;   
15.   
16.     IplImage *dst = cvCreateImage(cvGetSize(img), img->depth,3);       
17.     cvCvtColor(img, dst, CV_BGRA2BGR);      
18.     cvReleaseImage(&img);      
19.     return dst;   
20. }  

 若是要從CBitmap轉爲IplImage，能夠先將CBitmap轉爲BITMAP，再由BITMAP轉爲IplImage；

Cbitmap 轉爲 bitmap代碼  

1. // CBitmap 轉爲 BITMAP   
2. CBitmap bitmap；   
3. bitmap.LoadBitmap(IDB_BITMAP);   
4. BITMAP   bmp;   
5. bitmap.GetBitmap(&bmp);   
6.   
7. // CBitmap與HBITMAP間的轉換   
8. // CBitmap轉爲HBITMAP   
9. CBitmap bitmap;   
10. bitmap.LoadBitmap(IDB_BITMAP);   
11. HBITMAP bmp = HBITMAP(bitmap);   
12. // HBITMAP轉爲CBitmap   
13. HBITMAP  hbitmap；     
14. CBitmap   bitmap;   
15. bitmap.Attach(hbitmap);