opencv 模板匹配算法

 

本章内容:
1. 模板匹配算法

输出结果:

代码

#include <ostream>
#include <opencv.hpp>
#include <math.h>

int main(int argc, char *argv[])
{
    /*
     本章内容:
        1. 模板匹配算法
    */
    cv::String fileName = "/home/wang/dev/Image/heihei.jpeg";
    cv::String fileName1 = "/home/wang/dev/Image/hei.png";
    cv::Mat src = cv::imread(fileName);
    cv::Mat src1 = cv::imread(fileName1);
    if(src.data == NULL){
        printf("图像读入失败\n");
        return -1;
    }
    cv::imshow("src1",src1);
    /* 1. 模板匹配
     api接口:CV_EXPORTS_W void matchTemplate( InputArray image, InputArray templ,
                                 OutputArray result, int method, InputArray mask = noArray() );

        @param image  原图像
        @param templ  搜索模板
        @param result 返回结果， single-channel 32-bit floating-point
        @param method Parameter specifying the comparison method, see #TemplateMatchModes
        enum  TemplateMatchModes {
                    TM_SQDIFF        = 0,
                    TM_SQDIFF_NORMED = 1,
                    TM_CCORR         = 2,
                    TM_CCORR_NORMED  = 3,
                    TM_CCOEFF        = 4,
                    TM_CCOEFF_NORMED = 5
    */
    cv::Mat dst;
    cv::matchTemplate(src,src1,dst,cv::TM_CCOEFF_NORMED);
    cv::imshow("dst", dst);
    cv::Point minIdx;
    cv::Point maxIdx;
    cv::minMaxLoc(dst,0,0,&minIdx,&maxIdx);
    cv::rectangle(src,maxIdx,cv::Point(maxIdx.x + src1.rows,maxIdx.y + src1.cols),cv::Scalar(0,0,255),4);
    cv::imshow("src",src);

    cv::waitKey(0);     return 1; }