1--代码
#include <cstdio>#include <iostream>#include "opencv2/opencv.hpp"void RGBToGray(const cv::Mat &src, cv::Mat &des){for(int r = 0; r < src.rows; r++){for(int c = 0; c <src.cols; c++){cv::Vec3b m = src.at<cv::Vec3b>(r, c);int gray = (m[2]*30 + m[1]*59 + m[0]*11 + 50) / 100;des.at<uchar>(r, c) = gray;}}}int main(int argc, char *argv[]){cv::Mat src = cv::imread("../test1.jpg"); // 读取图片cv::Mat gray;cv::Mat Mygray(src.rows, src.cols, CV_8UC1);cv::cvtColor(src, gray, cv::COLOR_BGR2GRAY); // 调用内置函数RGBToGray(src, Mygray); // 调用自定义函数cv::imshow("src", src); // 显示图像cv::imshow("gray", gray);cv::imshow("Mygray", Mygray);cv::waitKey(0);return 0;}
cmake_minimum_required(VERSION 3.24) # 指定 cmake的 最小版本project(test) # 设置项目名称find_package(Opencv REQUIRED)add_executable(main_demo main.cpp) # 生成可执行文件target_link_libraries(main_demo ${OpenCV_LIBS} ) # 设置target需要链接的库