BMP与IplImage相互转换
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class BMP {public: BMP():bmpData(NULL) { memset(&biHeader, 0, sizeof(biHeader)); } BMP(const BMP & img); BMP(const IplImage &img); BMP(int width, int height, int bitCount); ~BMP(){ delete [] bmpData; } bool CreateImage(const BITMAPINFOHEADER &biHeader); //Export IplImage * BMP2Ipl(); //void Show(HWND hWnd, int nID); //void Show(CDC *pDC, CRect & rect); //void Show(HWND hWnd); void ReSize(int newW, int newH);private: void CopyData(char *dest, const char *src, int dataByteSize, bool isConvert, int height); // isConvert=true 进行顶左和底左之间的转换(顶左到底左或底左到顶左)，否则不转换 // biSizeImage may be set to zero for BI_RGB bitmaps, so calculate it. int ImgSize() { return ( biHeader.biHeight * ((biHeader.biWidth * biHeader.biBitCount / 8 + 3) & (-4))); }public: void Clear(); BITMAPINFOHEADER biHeader; unsigned char * bmpData;};
#include "Base.h"/*************************************************************************************************** ** NOTE: ** Only use the "8 bit, 1 or 3 channels" image, the BitMap use LowerLeft （底左）, ** the IplImage use TopLeft （顶左） ** IplImage: ** nChannels = 1 or 3 number of channels ** depth = IPL_DEPTH_8U pixel depth (8 bit), IPL_DEPTH_8U=8 ** dataOrder = 0 交叉存取颜色通道 ** origin = IPL_ORIGIN_TL 图像数据保存形式，IPL_ORIGIN_BL底左结构, IPL_ORIGIN_TL顶左结构 ** align = 4 行数据对齐方式，保证下一行数据从整4字节位置开始 ** width ** height ** widthStep 图像数据行大小，单位字节 ** imageSize 图像数据大小(=height*widthStep)，单位字节 ** imageData 指向图像数据区，char * ** BITMAPINFOHEADER: * * biSize Specifies the number of bytes required by the structure ** biWidth ** biHeight(>0) biHeight>0底左结构；biHeight<0顶左结构 ** biPlanes = 1 Specifies the number of planes for the target device. This value ** must be set to 1. ** biBitCount =8 or 24 bits-per-pixel,8-(pixelDepth=8,channels=1), ** 24-(pixelDepth=8,channels=3) ** biCompression = BI_RGB An uncompressed format ** biSizeImage Specifies the size, in bytes, of the image.This may be set to zero ** for BI_RGB bitmaps. ** biXPelsPerMeter = 0 ** biYPelsPerMeter = 0 ** biClrUsed = 0 ** biClrImportant = 0 ** ****************************************************************************************************/BMP::BMP(const BMP & img) { if(!IsSupport(img)) { BMP(); return; } //biHeader = img.biHeader; PBITMAPINFOHEADER pBmpH = (PBITMAPINFOHEADER)&img.biHeader; memcpy(&biHeader, pBmpH, sizeof(BITMAPINFOHEADER)); biHeader.biSizeImage = ImgSize(); bool isLowerLeft = biHeader.biHeight>0; //int rowSize=0; if(!isLowerLeft) biHeader.biHeight=-biHeader.biHeight; if(bmpData!=NULL) delete[] bmpData; bmpData = new unsigned char [biHeader.biSizeImage]; //memcpy(bmpData, img.bmpData, img.biHeader.biSizeImage); CopyData((char *)bmpData, (char*)img.bmpData, biHeader.biSizeImage, !isLowerLeft, biHeader.biHeight);}BMP::BMP(const IplImage &img) { if(!IsSupport(img)) { BMP(); return; } bool isTopLeft = (img.origin == IPL_ORIGIN_TL); biHeader.biSize = sizeof(BITMAPINFOHEADER); biHeader.biWidth = img.width; biHeader.biHeight = img.height; biHeader.biPlanes = 1; biHeader.biBitCount = img.depth * img.nChannels; biHeader.biCompression = BI_RGB; biHeader.biSizeImage = img.imageSize; biHeader.biXPelsPerMeter = 0; biHeader.biYPelsPerMeter = 0; biHeader.biClrUsed = 0; biHeader.biClrImportant = 0; if(bmpData!=NULL) delete[] bmpData; bmpData = new unsigned char [img.imageSize]; //memcpy(bmpData, img.ImageData, img.imageSize); CopyData((char*)bmpData, (char*)img.imageData, img.imageSize, isTopLeft, img.height); /*int i,j; CvScalar s; for(i=0;i<img.width;i++) for(j=0;j<img.height;j++){ s=cvGet2D(&img,i,j); } */}BMP::BMP(int width, int height, int bitCount) { if(bitCount!=8 && bitCount!=24) return; biHeader.biSize = sizeof(BITMAPINFOHEADER); biHeader.biWidth = width; biHeader.biHeight = height; biHeader.biPlanes = 1; biHeader.biBitCount = bitCount; biHeader.biCompression = BI_RGB; biHeader.biSizeImage = ImgSize(); biHeader.biXPelsPerMeter = 0; biHeader.biYPelsPerMeter = 0; biHeader.biClrUsed = 0; biHeader.biClrImportant = 0; if(bmpData!=NULL) delete[] bmpData; bmpData = new unsigned char [biHeader.biSizeImage]; Clear();}// dest: the destination image // dataByteSize: the Source image // height: source image heightvoid BMP::CopyData(char *dest, const char *src, int dataByteSize, bool isConvert, int height) { char * p = dest; if(!isConvert) { memcpy(dest, src, dataByteSize); return; } if(height<=0) return; //int height = dataByteSize/rowByteSize; int rowByteSize = dataByteSize / height; src = src + dataByteSize - rowByteSize ; for(int i=0; i<height; i++) { memcpy(dest, src, rowByteSize); dest += rowByteSize; src -= rowByteSize; } }IplImage * BMP::BMP2Ipl() { if(!IsSupport(*this)) return NULL; IplImage *iplImg; int height; bool isLowerLeft = biHeader.biHeight>0; height = (biHeader.biHeight>0) ? biHeader.biHeight : -biHeader.biHeight; iplImg = cvCreateImage( cvSize(biHeader.biWidth, height), IPL_DEPTH_8U, biHeader.biBitCount / 8); //iplImg = cvCreateImageHeader( cvSize(biHeader.biWidth, height), IPL_DEPTH_8U, biHeader.biBitCount / 8); //cvSetData(iplImg,(char*)bmpData,biHeader.biSizeImage/height); CopyData( iplImg->imageData, (char*)bmpData, biHeader.biSizeImage, isLowerLeft, height); /*int i,j; CvScalar s; int channels=biHeader.biBitCount / 8; int step=(biHeader.biWidth*channels+3) & -4; int loc=0; for(i=0;i<iplImg->height;i++){ for(j=0;j<iplImg->width;j++){ loc=i*step + j*channels; s.val[0]=bmpData[loc]; if(channels==3){ s.val[1]=bmpData[loc+1]; s.val[2]=bmpData[loc+2]; } cvSet2D(iplImg,i,j,s); } }*/ return iplImg;}void BMP::Clear() { if(bmpData == NULL) return; memset(bmpData, 0, ImgSize());}void BMP::ReSize(int newW, int newH) { biHeader.biWidth = newW; biHeader.biHeight = newH; biHeader.biSizeImage = ImgSize(); if(bmpData!=NULL) delete[] bmpData; bmpData = new unsigned char [biHeader.biSizeImage]; Clear();}bool BMP::CreateImage(const BITMAPINFOHEADER &bih) { memset(&biHeader,0,sizeof(BITMAPINFOHEADER)); delete[] bmpData; bmpData = NULL; memcpy(&biHeader, &bih, sizeof(BITMAPINFOHEADER)); biHeader.biSizeImage = ImgSize(); bmpData = new unsigned char [ biHeader.biSizeImage ]; if(bmpData == NULL) return false; else{ Clear(); return true; }}
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