我正在使用OpenCV和C++。我想檢查一個圖像是否是另一個圖像的一部分,並且已經找到了一個名爲matchTemplate
的函數。但是如果模板圖像有點不同呢?是否有一個函數或像matchTemplate
的方式來檢查,如果一個模板是源圖像的一部分,但用寬容的參數,如位置,角度,大小,甚至變形?或者我需要一個完全不同於模板匹配的方法嗎?在OpenCV中與容差匹配的模板
這是我的代碼到目前爲止,它在源圖像中找到模板圖像,但沒有(或幾乎沒有)寬容。
#include <opencv2\core\core.hpp>
#include <opencv2\highgui\highgui.hpp>
#include <opencv2\imgproc\imgproc.hpp>
#include <opencv2\highgui\highgui.hpp>
#include <iostream>
#include <stdio.h>
using namespace cv;
using namespace std;
/// Global Variables
Mat img; Mat templ; Mat result;
const char* image_window = "Source Image";
const char* result_window = "Result window";
int match_method;
int max_Trackbar = 5;
/// Function Headers
void MatchingMethod(int, void*);
/**
* @function main
*/
int main(int, char** argv)
{
/// Load image and template
img = imread("a1.jpg", 1);
templ = imread("a2.jpg", 1);
/// Create windows
namedWindow(image_window, WINDOW_AUTOSIZE);
namedWindow(result_window, WINDOW_AUTOSIZE);
/// Create Trackbar
const char* trackbar_label = "Method: \n 0: SQDIFF \n 1: SQDIFF NORMED \n 2: TM CCORR \n 3: TM CCORR NORMED \n 4: TM COEFF \n 5: TM COEFF NORMED";
createTrackbar(trackbar_label, image_window, &match_method, max_Trackbar, MatchingMethod);
MatchingMethod(0, 0);
waitKey(0);
return 0;
}
/**
* @function MatchingMethod
* @brief Trackbar callback
*/
void MatchingMethod(int, void*)
{
/// Source image to display
Mat img_display;
img.copyTo(img_display);
/// Create the result matrix
int result_cols = img.cols - templ.cols + 1;
int result_rows = img.rows - templ.rows + 1;
result.create(result_cols, result_rows, CV_32FC1);
/// Do the Matching and Normalize
matchTemplate(img, templ, result, match_method);
normalize(result, result, 0, 1, NORM_MINMAX, -1, Mat());
/// Localizing the best match with minMaxLoc
double minVal; double maxVal; Point minLoc; Point maxLoc;
Point matchLoc;
minMaxLoc(result, &minVal, &maxVal, &minLoc, &maxLoc, Mat());
/// For SQDIFF and SQDIFF_NORMED, the best matches are lower values. For all the other methods, the higher the better
if(match_method == TM_SQDIFF || match_method == TM_SQDIFF_NORMED)
{ matchLoc = minLoc; }
else
{ matchLoc = maxLoc; }
/// Show me what you got
rectangle(img_display, matchLoc, Point(matchLoc.x + templ.cols , matchLoc.y + templ.rows), Scalar::all(0), 2, 8, 0);
rectangle(result, matchLoc, Point(matchLoc.x + templ.cols , matchLoc.y + templ.rows), Scalar::all(0), 2, 8, 0);
imshow(image_window, img_display);
imshow(result_window, result);
return;
}
我用我的代碼中的圖片:
您可以嘗試不同的方法 - 本地描述符匹配。你想讓我詳細說明嗎? – GilLevi
你可以試試''Hae Yong Kim和Sidnei Alves deAraújo'灰度模板匹配不變來旋轉,縮放,平移,亮度和對比度' – Micka
感謝您的回覆。我嘗試過功能匹配,目前爲止這對我很有用。目前,我正在進行形狀匹配,以查看是否可以找到更好的方法。 – Mickey