[OpenCV] 使用OpenCV进行yuv和rgb的转换

int main() { /*     cout << "Hello World!" << endl;      Mat rgb = imread("/home/ubuntu/rgb320.jpg");     Mat nv12;     Mat rgb2;     cvtColor(rgb, nv12, COLOR_RGB2YUV_I420);     //imwrite("/home/ubuntu/nv12.yuv",nv12,0);     FILE* f = fopen("/home/ubuntu/nv12,yuv","wb ");     fwrite(nv12.data,1,rgb.rows*rgb.cols*3/2,f);     cvtColor(nv12, rgb2, COLOR_YUV2RGB_I420);     imwrite("/home/ubuntu/rgb2.png",rgb2);      return 0; */     Mat yuvNV12;     Mat gbr24;     //1.read nv12 file to nv12 mat     FILE* f = fopen("/home/ubuntu/rgb320.yuv","r");     char buff[960000];     memset(buff,0,960000);     fread(buff,1,180*320*3/2,f);     yuvNV12.create(180*3/2,320,CV_8UC1);     memcpy(yuvNV12.data,buff,320*180*3/2);     //2.cvt nv12 mat to rgb24 mat     cvtColor(yuvNV12,gbr24, COLOR_YUV2RGB_I420);     //fwrite(yuvNV12.data,1,gbr24.rows*gbr24.cols*3/2,f);     //3.     imwrite("/home/ubuntu/rgb320_new.jpg",gbr24);     fflush(f);     fclose(f); }