OpenCV 错误：互相关中的断言失败

Posted 2023-02-22

【中文标题】OpenCV 错误：互相关中的断言失败

【英文标题】：OpenCV Error: Assertion failed in cross correlation

【发布时间】：2015-05-04 01:50:37

【问题描述】：

当我尝试运行我的代码时出现此错误：

OpenCV 错误：断言失败（corrsize.height

这里是源代码：

#include "opencv2/imgcodecs.hpp"
#include "opencv2/highgui/highgui.hpp"
#include "opencv2/imgproc/imgproc.hpp"
#include <opencv2/core/core.hpp>
#include <iostream>
#include <stdio.h>

using namespace std;
using namespace cv;

/// 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( argv[1], 1);
 templ = imread( argv[2], 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_rows, result_cols, 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;

【问题讨论】：

你不需要为result分配空间。尝试删除result.create( result_rows, result_cols, CV_32FC1 )

我试过你说的，但仍然遇到同样的错误

代码中的哪一行给出了异常？

【参考方案1】：

您确定cv::imread() 正确加载了图像吗？如果您提供完整路径而不是 argv 的值，它是否有效？

即：

img = imread("C:/original_image.jpg");
templ = imread("C:/template_image.jpg");

【讨论】：

我确实给出了完整路径，但现在出现了这个内联错误：inline void Mat::create(int _rows, int _cols, int _type) _type &= TYPE_MASK; if( dims = 0) in setSize, file /Users/ts/documents/opencv-3.0.0-beta/modules/core/src /matrix.cpp，两个图像的第 290 行