OpenCV实现RGB与YUV的转换

ARGB -> RGB

//unsigned char *data 存的是ARGB的裸数据；cv::Mat argbImg;cv::Mat rgbImg(cy, cx,CV_8UC3);yuvImg.create(cy, cx, CV_8UC4);memcpy(argbImg.data, data, len);cv::cvtColor(argbImg, rgbImg, CV_RGBA2RGB);flip(rgbImg, rgbImg, 0);    //垂直翻转

YUV -> RGB

//unsigned char *data 存的是YUYV的裸数据；cv::Mat yuvImg;cv::Mat rgbImg(cy, cx,CV_8UC3);yuvImg.create(cy , cx, CV_8UC2);memcpy(yuvImg.data, data, len);cv::cvtColor(yuvImg, rgbImg, CV_YUV2BGR_YUYV);

I420 -> RGB

//unsigned char *data 存的是I420的裸数据；cv::Mat yuvImg;cv::Mat rgbImg(cy, cx,CV_8UC3);yuvImg.create(cy * 3/2, cx, CV_8UC1);memcpy(yuvImg.data, data, len);cv::cvtColor(yuvImg, rgbImg, CV_YUV2BGR_I420);