openCV ROI

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/u013420428/article/details/82806985

#include "opencv2/core.hpp"
#include "opencv2/imgproc.hpp"
#include "opencv2/highgui.hpp"
#include "opencv2/videoio.hpp"
#include <iostream>

using namespace std;
using namespace cv;

//仅最大化HSV图像S和 V部分
void saturate_sv(IplImage* img)
{
    for (int y=0; y < img->height; y++)
    {
        uchar* ptr = (uchar*)(img->imageData + y + img->widthStep);
        for (int x=0; x < img->width; x++)
        {
            ptr[3*x+2] = 255;
            ptr[3*x+3] = 255;
        }
    }   
}


int main(int argc, char **argv)
{
    IplImage *src;

    if (argc < 7)
    {
        std::cout <<"./roi_add <image> x y width height add"<<std::endl;
    }

    if( argc == 7 && ((src = cvLoadImage(argv[1], 1)) != 0))
    {
        saturate_sv(src);

        int x = atoi(argv[2]);
        int y = atoi(argv[3]);
        int width = atoi(argv[4]);
        int height = atoi(argv[5]);
        int add = atoi(argv[6]);

        cvSetImageROI(src, cvRect(x, y, width, height));
        cvAddS(src, cvScalar(add), src);
        cvResetImageROI(src);
        cvNamedWindow("Roi_Add", 1);
        cvShowImage("Roi_Add", src);
        cvWaitKey();

    }
    return 0;
}

cmake_minimum_required(VERSION 2.8)

project(prydown)

find_package(OpenCV REQUIRED)

add_executable(pyrdown main.cpp)

target_link_libraries(pyrdown ${OpenCV_LIBS})

./roi_add source1.png 150 150 200 200 150