opencvc++初学者代码问题

#include <opencv2/opencv.hpp>#include using namespace std;using namespace cv;Mat img, imgPoint; //全局的图像Point prePoint; //前一时刻鼠标的坐标，用于绘制直线void mouse(int event, int x, int y, int flags, void*);int main(){ img = imread("C://lena.jpg"); if (!img.data) { cout << "请确认输入图像名称是否正确！ " << endl; return -1; } img.copyTo(imgPoint); imshow("图像窗口 1", img); imshow("图像窗口 2", imgPoint); setMouseCallback("图像窗口 1", mouse, 0); //鼠标影响 waitKey(0); return 0;}void mouse(int event, int x, int y, int flags, void*){ if (event == EVENT_RBUTTONDOWN) //单击右键 { cout << "点击鼠标左键才可以绘制轨迹" << endl; } if (event == EVENT_LBUTTONDOWN) //单击左键，输出坐标 { prePoint = Point(x, y); cout << "轨迹起始坐标" << prePoint << endl; } if (event == EVENT_MOUSEMOVE && (flags & EVENT_FLAG_LBUTTON)) //鼠标按住左键移动第 3 章 图像基本操作 { //通过改变图像像素显示鼠标移动轨迹 imgPoint.at(y, x) = Vec3b(0, 0, 255); imgPoint.at(y, x - 1) = Vec3b(0, 0, 255); imgPoint.at(y, x + 1) = Vec3b(0, 0, 255); imgPoint.at(y + 1, x) = Vec3b(0, 0, 255); imgPoint.at(y + 1, x) = Vec3b(0, 0, 255); imshow("图像窗口 2", imgPoint); //通过绘制直线显示鼠标移动轨迹 Point pt(x, y); line(img, prePoint, pt, Scalar(0, 0, 255), 2, 5, 0); prePoint = pt; imshow("图像窗口 1", img); } Mat img1Gray; cvtColor(imgPoint, img1Gray, COLOR_RGB2GRAY, 0); //通过阈值处理生成Mask掩模 Mat img1Mask; threshold(img1Gray, img1Mask, 245, 255, THRESH_BINARY); //对Mask膨胀处理，增加Mask面积 Mat Kernel = getStructuringElement(MORPH_RECT, Size(3, 3)); dilate(img1Mask, img1Mask, Kernel); //图像修复 Mat img1Inpaint; inpaint(img, img1Mask, img1Inpaint, 5, INPAINT_NS); //显示处理结果 imshow("img1Mask", img1Mask); imshow("img1修复后", img1Inpaint);}

这个错误是啥？怎么改的