參考資訊:
https://docs.opencv.org/master/d7/d9f/tutorial_linux_install.html
main.cpp
#include <stdio.h> #include <opencv2/opencv.hpp> using namespace cv; int main(int argc, char **argv) { Mat image; image = imread("main.jpg", 1); if (!image.data) { printf("No image data \n"); return -1; } for (int y = 0; y < 50; y++) { for (int x = 0; x < 100; x++) { image.at<cv::Vec3b>(y, x)[0] = 255; image.at<cv::Vec3b>(y, x)[1] = 0; image.at<cv::Vec3b>(y, x)[2] = 0; } } namedWindow("show image", WINDOW_AUTOSIZE); imshow("show image", image); waitKey(0); return 0; }
CMakeLists.txt
cmake_minimum_required(VERSION 2.8) project(main) find_package(OpenCV REQUIRED) include_directories(${OpenCV_INCLUDE_DIRS}) add_executable(main main.cpp) target_link_libraries(main ${OpenCV_LIBS})
編譯並且執行
$ cmake . $ make $ ./main
完成