freeimage 图像转char*

#include "stdio.h" #include "stdlib.h" #include "unistd.h" #include "FreeImage.h" #include "OpenJPEG.h" #include "wrappers.hpp" #include "gradientMex.hpp" #define PI 3.141592645 // 自定义一个4字节的结构体 class byte4 { public: BYTE r; // 用于存放 red BYTE g; // 用于存放 green BYTE b; // 用于存放 blue BYTE a; // 用于存放 alpha }; ///缩放图像 static void _ieInterpImageBilinear8UC1_Ver3_RowFilter(unsigned char* src, long* dst, int len, int* leftIdx, int* rightIdx, long* weight, int shift) { int i; for(i = 0; i < len - 4; i+=4) { *dst++ = ((1<<shift) - weight[i])*src[leftIdx[i]] + weight[i]*src[rightIdx[i]]; *dst++ = ((1<<shift) - weight[i+1])*src[leftIdx[i+1]] + weight[i+1]*src[rightIdx[i+1]]; *dst++ = ((1<<shift) - weight[i+2])*src[leftIdx[i+2]] + weight[i+2]*src[rightIdx[i+2]]; *dst++ = ((1<<shift) - weight[i+3])*src[leftIdx[i+3]] + weight[i+3]*src[rightIdx[i+3]]; } for( ; i < len; ++i) { *dst++ = ((1<<shift) - weight[i])*src[leftIdx[i]] + weight[i]*src[rightIdx[i]]; } } #define IET_MAX(x,y) (x)>(y)?(x):(y) #define IET_MIN(x,y) (x)>(y)?(y):(x) #define IET_SWAP(x,y,tmp) (tmp)=(x);(x)=(y);(y)=(tmp); static void ResizeImage(unsigned char* pSrc,int src_w,int src_h, unsigned char* pDst,int dst_w, int dst_h) { int i, j; int sw, sh, sstep; int dw, dh, dstep; unsigned char *sdata, *ddata; float horScaleRatio, verScaleRatio; long *rowBuf1, *rowBuf2; long *upLinePtr, *downLinePtr, *tempPtr; long *horWeight; int *horLeftIdx, *horRightIdx; int preVerUpIdx, preVerDownIdx; int shift = 8; sw=src_w; sh=src_h; sstep=24; sdata=pSrc; dw=dst_w; dh=dst_h; dstep=24; ddata=pDst; horScaleRatio = sw / (float)(dw); verScaleRatio = sh / (float)(dh); rowBuf1 = new long[dw]; rowBuf2 = new long[dw]; horWeight = new long[dw]; horLeftIdx = new int[dw]; horRightIdx = new int[dw]; //col interpolation //计算目标图像像素横向的左右邻居序号，和权重。 for(i = 0; i < dw; i++) { float pos = (i + 0.5f) * horScaleRatio; horLeftIdx[i] = (int)(IET_MAX(pos - 0.5f, 0)); horRightIdx[i] = (int)(IET_MIN(pos + 0.5f, sw-1)); horWeight[i] = (long) (fabs(pos - 0.5f - horLeftIdx[i]) * (1<<shift)); } preVerUpIdx = -1; preVerDownIdx = -1; upLinePtr = rowBuf1; downLinePtr = rowBuf2; for(j = 0; j < dh; j++) { float pos = (j + 0.5f) * verScaleRatio; int verUpIdx = (int)(IET_MAX(pos - 0.5f, 0)); int verDownIdx = (int)(IET_MIN(pos + 0.5f, sh-1)); long verWeight = (long) (fabs(pos - 0.5f - verUpIdx) * (1<<shift)); if(verUpIdx == preVerUpIdx && verDownIdx == preVerDownIdx) { ; //do nothing } else if(verUpIdx == preVerDownIdx) { IET_SWAP(upLinePtr, downLinePtr, tempPtr); _ieInterpImageBilinear8UC1_Ver3_RowFilter(sdata + sstep*verDownIdx, downLinePtr, dw, horLeftIdx, horRightIdx, horWeight, shift); } else { _ieInterpImageBilinear8UC1_Ver3_RowFilter(sdata + sstep*verUpIdx, upLinePtr, dw, horLeftIdx, horRightIdx, horWeight, shift); _ieInterpImageBilinear8UC1_Ver3_RowFilter(sdata + sstep*verDownIdx, downLinePtr, dw, horLeftIdx, horRightIdx, horWeight, shift); } unsigned char* _ptr = ddata + dstep*j; for(i = 0; i < dw-4; i+=4) { *_ptr++ = (unsigned char) ( (((1<<shift) - verWeight)*upLinePtr[i] + verWeight*downLinePtr[i]) >> (2*shift) ); *_ptr++ = (unsigned char) ( (((1<<shift) - verWeight)*upLinePtr[i+1] + verWeight*downLinePtr[i+1]) >> (2*shift) ); *_ptr++ = (unsigned char) ( (((1<<shift) - verWeight)*upLinePtr[i+2] + verWeight*downLinePtr[i+2]) >> (2*shift) ); *_ptr++ = (unsigned char) ( (((1<<shift) - verWeight)*upLinePtr[i+3] + verWeight*downLinePtr[i+3]) >> (2*shift) ); } for(; i < dw; i++) { *_ptr++ = (unsigned char) ( (((1<<shift) - verWeight)*upLinePtr[i] + verWeight*downLinePtr[i]) >> (2*shift) ); } preVerUpIdx = verUpIdx; preVerDownIdx = verDownIdx; } delete []rowBuf1; delete []rowBuf2; delete []horWeight; delete []horLeftIdx; delete []horRightIdx; } void chog(){ char *src="1.jpg"; char *dst="2.jpg"; // RescalePic(src,600,400,dst); #if defined(FREEIMAGE_LIB) || !defined(WIN32) FreeImage_Initialise(); #endif FIBITMAP *c_bitmap = NULL ; OpenJPEG *openJPEG=new OpenJPEG(); FIBITMAP *bmp =openJPEG->LoadDIB(src,0); if( bmp ) { printf("aaaaaaaaaaaaaaaaaaa"); int bpp; bpp = FreeImage_GetBPP(bmp); switch (bpp) { case 32: break; default: FIBITMAP *bmpTemp = FreeImage_ConvertTo32Bits(bmp); if (bmp != NULL) FreeImage_Unload(bmp); bmp = bmpTemp; bpp = FreeImage_GetBPP(bmp); break; } const int orientations = 9; // ensure array is continuous // const cv::Mat& image = (img.isContinuous() ? img : img.clone()); int binSize=4; int channels =3;// image.channels(); int computeChannels = 32; int width = FreeImage_GetWidth(bmp); int height = FreeImage_GetHeight(bmp); bpp = FreeImage_GetBPP(bmp); switch (bpp) { case 32: break; default: FIBITMAP *bmpTemp = FreeImage_ConvertTo32Bits(bmp); if (bmp != NULL) FreeImage_Unload(bmp); bmp = bmpTemp; bpp = FreeImage_GetBPP(bmp); break; } unsigned char* pixels = (unsigned char*) malloc(sizeof(unsigned char) * 4 * width * height); FreeImage_ConvertToRawBits(pixels, bmp, width * 4, bpp, FI_RGBA_RED_MASK, FI_RGBA_GREEN_MASK, FI_RGBA_BLUE_MASK, true); unsigned char* dstpixels = (unsigned char*) malloc(sizeof(unsigned char) * 4 *4* width * height); ResizeImage(pixels,width,height,dstpixels,width*2,height*2); // FIBITMAP* bitmap = FreeImage_ConvertFromRawBits(dstpixels,width*2,height*2,width*2*3,32,8,8,8,FALSE); FIBITMAP* image = FreeImage_ConvertFromRawBits(pixels, width,height,width*3, 24, 0x0000FF, 0xFF0000, 0x00FF00, false); FreeImage_Save(FIF_BMP, image, "aaaaa.jpg", 0); // openJPEG->Savejpg(bitmap,"aaaaa.jpg"); //DLL_API FIBITMAP *DLL_CALLCONV FreeImage_ConvertFromRawBits(BYTE *bits, int width, int height, int pitch, unsigned bpp, unsigned red_mask, unsigned green_mask, unsigned blue_mask, BOOL topdown FI_DEFAULT(FALSE)); // FreeImage_ConvertFromRawBits(dstpixels,width*2,height*2,width*2*3,bpp); // width =bitmap->data;// image.cols; // height = image.rows; int widthBin = width / binSize; int heightBin = height / binSize; float* const I = (float*)wrCalloc(static_cast<size_t>(width * height * channels), sizeof(float)); float* const H = (float*)wrCalloc(static_cast<size_t>(widthBin * heightBin * computeChannels), sizeof(float)); float* const M = (float*)wrCalloc(static_cast<size_t>(width * height), sizeof(float)); float* const O = (float*)wrCalloc(static_cast<size_t>(width * height), sizeof(float)); // row major (interleaved) to col major (non interleaved;clustered) // float* imageData = reinterpret_cast<float*>(image.data); float* const redChannel = I; float* const greenChannel = I + width * height; float* const blueChannel = I + 2 * width * height; int colMajorPos = 0, rowMajorPos = 0; for (int row = 0; row < height; ++row) { for (int col = 0; col < width; ++col) { colMajorPos = col * height + row; rowMajorPos = row * channels * width + col * channels; blueChannel[colMajorPos] = pixels[rowMajorPos]; greenChannel[colMajorPos] = pixels[rowMajorPos + 1]; redChannel[colMajorPos] = pixels[rowMajorPos + 2]; } } // calc fhog in col major piotr::gradMag(I, M, O, height, width, channels, true); // if (fhogChannelsToCopy == 27) // fhog(M, O, H, height, width, binSize, orientations, -1, 0.2f, false); // else piotr::fhog_o(M, O, H, height, width, binSize, orientations, -1, 0.2f); int fhogChannelsToCopy = 31; wrFree(M); wrFree(O); wrFree(I); wrFree(H); } } int main(int argc, char *argv[]) { chog(); }