OpenCV——积分图计算

 

 

#include <opencv2/opencv.hpp>
#include <iostream>
#include "math.h"

using namespace cv;
using namespace std;

int main(int argc, char** argv) {
    Mat src = imread("test.jpg",0);
    if (src.empty()) {
        printf("could not load image...\n");
        return -1;
    }    
    imshow("input image", src);

    //计算积分图
    Mat sumii = Mat::zeros(src.rows+1,src.cols+1,CV_32FC1);//CV_32FC1防止溢出
    Mat sqsumii = Mat::zeros(src.rows + 1, src.cols + 1, CV_32FC1);//CV_32FC1防止溢出
    integral(src,sumii,sqsumii);

    normalize(sumii, sumii,0,255,NORM_MINMAX,CV_8UC1,Mat());
    imshow("integral image", sumii);

    waitKey(0);
    return 0;
}