• 图像处理简单实例[OpenCV 笔记1]


    几个入门的简单程序,和对应的CMakeList, 虽然简单重新测一下写一下也是好的。

    CMake教程传送门

    图像显示

    ShowImage.cxx

    #include <opencv2/opencv.hpp>
    #include <opencv2/highgui/highgui.hpp>
    #include <opencv2/imgcodecs/imgcodecs.hpp>
    
    int main(){
        cv::Mat srcImage = cv::imread("1.jpg");
        imshow("Original Image", srcImage);
        cv::waitKey(0);
        return 0;
    }

    CMakeLists.txt

    cmake_minimum_required (VERSION 2.8)
    project (ShowImage)
    
    find_package( OpenCV REQUIRED )
    include_directories( ${OpenCV_INCLUDE_DIRS} )
    
    # add the executable
    add_executable (ShowImage ShowImage.cxx)
    target_link_libraries(ShowImage opencv_core opencv_highgui opencv_imgcodecs)

    图像腐蚀

    ErodeImage.cxx

    #include <opencv2/opencv.hpp>
    #include <opencv2/highgui/highgui.hpp>
    #include <opencv2/imgcodecs/imgcodecs.hpp>
    #include <opencv2/imgproc/imgproc.hpp>
    
    int main(){
        // read image
        cv::Mat srcImage = cv::imread("1.jpg");
        
        // show original image
        imshow("Original Image", srcImage);
        
        // erode image
        cv::Mat element = getStructuringElement(cv::MORPH_RECT, cv::Size(15,15));
        cv::Mat dstImage;
        erode(srcImage, dstImage, element);
        
        // show results
        imshow("Image Erosion", dstImage);
        cv::waitKey(0);
        return 0;
    }

    CMakeList.txt

    cmake_minimum_required (VERSION 2.8)
    project (ErodeImage)
    
    # find OpenCV packages
    find_package( OpenCV REQUIRED )
    include_directories( ${OpenCV_INCLUDE_DIRS} )
    
    # add the executable
    add_executable (ErodeImage ErodeImage.cxx)
    target_link_libraries(ErodeImage opencv_core opencv_highgui opencv_imgproc opencv_imgcodecs)

    图像模糊

    BlurImage.cxx

    #include <opencv2/opencv.hpp>
    #include <opencv2/highgui/highgui.hpp>
    #include <opencv2/imgcodecs/imgcodecs.hpp>
    #include <opencv2/imgproc/imgproc.hpp>
    
    int main(){
        // read image
        cv::Mat srcImage = cv::imread("1.jpg");
        
        // show original image
        imshow("Original Image", srcImage);
        
        // blur image
        cv::Mat dstImage;
        blur(srcImage, dstImage, cv::Size(7,7));
        
        // show results
        imshow("Image Blurring", dstImage);
        cv::waitKey(0);
        return 0;
    }

    CMakeList.txt

    cmake_minimum_required (VERSION 2.8)
    project (BlurImage)
    
    # find OpenCV packages
    find_package( OpenCV REQUIRED )
    include_directories( ${OpenCV_INCLUDE_DIRS} )
    
    # add the executable
    add_executable (BlurImage BlurImage.cxx)
    target_link_libraries(BlurImage opencv_core opencv_highgui opencv_imgproc opencv_imgcodecs)

    Canny边缘检测

    CannyEdgeDetection.cxx

    #include <opencv2/opencv.hpp>
    #include <opencv2/highgui/highgui.hpp>
    #include <opencv2/imgcodecs/imgcodecs.hpp>
    #include <opencv2/imgproc/imgproc.hpp>
    
    int main(){
        // read image
        cv::Mat srcImage = cv::imread("1.jpg");
        
        // show original image
        imshow("Original Image", srcImage);
        
        // blur image
        cv::Mat dstImage, edge, grayImage;
        
        // create a matrix the same size as srcImage
        dstImage.create(srcImage.size(), srcImage.type());
        
        // convert color image to gray-scale image
        // OpenCV2
        // cv::cvtColor(srcImage, grayImage, cv::CV_BGR2GRAY);
        // OpenCV3
        cv::cvtColor(srcImage, grayImage, cv::COLOR_BGR2GRAY);
        
        // denoising
        blur(srcImage, dstImage, cv::Size(3,3));
        
        // apply Canny operator
        Canny( dstImage, edge, 3, 9, 3);
        
        // show results
        imshow("Canny Edge Detection", edge);
        cv::waitKey(0);
        return 0;
    }

    CMakeList.txt

    cmake_minimum_required (VERSION 2.8)
    project (CannyEdgeDetection)
    
    # find OpenCV packages
    find_package( OpenCV REQUIRED )
    include_directories( ${OpenCV_INCLUDE_DIRS} )
    
    # add the executable
    add_executable (CannyEdgeDetection CannyEdgeDetection.cxx)
    target_link_libraries(CannyEdgeDetection opencv_core opencv_highgui opencv_imgproc opencv_imgcodecs)
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  • 原文地址:https://www.cnblogs.com/Xiaoyan-Li/p/5674767.html
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