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在OpenCV编写程序实现以下功能：

读入图像设置图像大小按键移动图像位置

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实现代码

#include "opencv2/core/core.hpp" #include "opencv2/imgproc/imgproc.hpp" #include "opencv2/highgui/highgui.hpp" #include <iostream> #include <ctype.h> using namespace cv; using namespace std; int main(int argc, char* argv[]) { char* window = "img"; int position_x = 1000, position_y=10,fullscreen=0; //读取待复制图片 cv::Mat roi = cv::imread("D:\\P1.jpg", cv::IMREAD_COLOR); cv::Mat roi_2 = cv::imread("D:\\P2.jpg", cv::IMREAD_COLOR); //cv::imshow("roi", roi); //namedWindow(window, CV_WINDOW_AUTOSIZE); while (true) { //设置黑色背景画布 cv::Mat image = cv::Mat::zeros(1024, 2048, CV_8UC3);//设置画布大小 image.setTo(cv::Scalar(0, 0, 0));//设置背景颜色 //设置画布绘制区域并复制 cv::Rect roi_rect = cv::Rect(10, 10, roi.cols, roi.rows); cv::Rect roi_rect_2 = cv::Rect(position_x, position_y, roi_2.cols, roi_2.rows); roi.copyTo(image(roi_rect)); roi_2.copyTo(image(roi_rect_2)); char key = cvWaitKey(30); switch (key) { //ROI平移操作 case 'a': position_x -= 1; break; case 's': position_y += 1; break; case 'd': position_x += 1; break; case 'w': position_y -= 1; break; case 'z': resize(roi_2, roi_2, Size(roi_2.cols*0.999, roi_2.rows*0.999), 0, 0, INTER_LINEAR); break; case 'x': resize(roi_2, roi_2, Size(roi_2.cols*1.005, roi_2.rows*1.005), 0, 0, INTER_LINEAR); break; case 'p': fullscreen = 1; break; case 'o': fullscreen = 0; break; } if (key == 27) break; namedWindow("LightField", CV_WINDOW_NORMAL); setWindowProperty("LightField", CV_WND_PROP_FULLSCREEN, fullscreen); cv::imshow("LightField", image); } return 0; }