bool tool_class::creatColor(std::string image_p){// 指定图像的宽度和高度int width =640;int height =480;// 创建一个空白图像
cv::Mat gradientImage(height, width, CV_8UC3);// 生成渐变色for(int y =0; y < height; y++){for(int x =0; x < width; x++){// 计算RGB颜色值,根据x和y的位置生成渐变色
uchar blue =static_cast<uchar>(x *255/ width);
uchar green =static_cast<uchar>((x + y)*255/(width + height));
uchar red =static_cast<uchar>(y *255/ height);// 设置像素颜色// 三通道:at<Vec3b>(row, col)// 单通道:at<uchar>(row, col)
gradientImage.at<cv::Vec3b>(y, x)= cv::Vec3b(blue, green, red);}}// 保存图像为文件(可选)
cv::imwrite(image_p.c_str(), gradientImage);// 显示渐变色图像
cv::imshow("Gradient Image", gradientImage);// 等待用户按下任意键后关闭窗口
cv::waitKey(0);// 关闭窗口
cv::destroyAllWindows();returntrue;}
绘制多边形
bool tool_class::drawPolygon(std::string image_p, std::vector<cv::Point> points){
cv::Mat ima = cv::imread(image_p.c_str());// 读取图像,替换为你的图片路径
cv::Scalar red = cv::Scalar(0,0,255);// Red color
cv::Scalar blue = cv::Scalar(255,0,0);// Red color int thickness =2;// 使用polylines函数给图片绘制多边形
cv::polylines(ima, points,true, red, thickness,8,0);// 填充颜色
cv::fillPoly(ima, std::vector<std::vector<cv::Point>>{points}, blue,8,0);// 显示图像
cv::imshow("Image with line", ima);// 绘制
cv::imwrite(image_p.c_str(), ima);returntrue;}
绘制多线
bool tool_class::drawLines(std::string image_p, std::vector<cv::Point> points){
cv::Mat ima = cv::imread(image_p.c_str());// 读取图像,替换为你的图片路径
cv::Scalar red = cv::Scalar(0,0,255);// Red color int thickness =2;// 遍历点列表,绘制线段for(size_t i =0; i < points.size()-1; i++){
cv::Point2f start = points[i];
cv::Point2f end = points[i +1];
cv::line(ima, start, end, red, thickness);}
cv::imwrite(image_p.c_str(), ima);returntrue;}
改变像素点颜色
bool tool_class::changeColor(std::string image_p,int width,int height){
cv::Mat ima = cv::imread(image_p.c_str());// 读取图像,替换为你的图片路径
cv::Scalar Red = cv::Scalar(0,0,255);// Red color // 改变像素点的颜色
ima.at<cv::Vec3b>(height, width)[0]=0;
ima.at<cv::Vec3b>(height, width)[1]=0;
ima.at<cv::Vec3b>(height, width)[2]=255;// 或者//uchar blue = 0;//uchar green = 0;//uchar red = 255;//ima.at<cv::Vec3b>(height, width) = cv::Vec3b(blue, green, red);
cv::imwrite(image_p.c_str(), ima);returntrue;}
本文代码链接:https://download.csdn.net/download/shangjg03/88522188 1 Spring Data框架集成 1.1 Spring Data框架介绍 Spring Data是一个用于简化数据库、非关系型数据库、索引库访问,并支持云服务的开源框架。其主要目标是使得对数据的访问变得方便快…