注意CV::Mat dst(height,weight)顺序

// TODO 1 merge frame(background)/face(tmp_ptr->frame) into one imagecv::Mat background;cap.read(background);cv::Mat dst(720,1280,CV_8UC3,cv::Scalar(0));//黑底cv::Rect rect_face(0,0,640,720);cv::resize(tmp_ptr->frame,tmp_ptr->frame,cv::Size(rect_face.width,rect_face.height));cv::imwrite("videos/test/"+std::to_string(h)+"_tmp_ptr.jpg",tmp_ptr->frame);tmp_ptr->frame.copyTo(dst(rect_face));cv::imwrite("videos/test/"+std::to_string(h)+"_tmp_ptr_.jpg",dst);// cv::resize(tmp_ptr->frame,dst(rect_face),cv::Size(rect_face.width,rect_face.height));cv::Rect rect_background(640,0,640,720);cv::resize(background,background,cv::Size(rect_background.width,rect_background.height));cv::imwrite("videos/test/"+std::to_string(h)+"_background.jpg",background);background.copyTo(dst(rect_background));// cv::resize(background,dst(rect_background),cv::Size(rect_background.width,rect_background.height));cv::imwrite("videos/test/"+std::to_string(h)+".jpg",dst);