OpenCV flann.h断言错误

我写了一个程序，它获取2张图片之间的匹配。这是代码。但如果我使用BruteForceMatcher>（不是flann），它可以工作。OpenCV flann.h断言错误

#include <stdio.h> 
#include "opencv2/core/core.hpp" 
#include "opencv2/features2d/features2d.hpp" 
#include "opencv2/highgui/highgui.hpp" 

using namespace cv; 

void help() 
{ 
    printf("\nThis program demonstrates using features2d detector, descriptor extractor and simple matcher\n" 
    "Using the SURF desriptor:\n" 
    "\n" 
    "Usage:\n matcher_simple <image1> <image2>\n"); 
} 

int main() 
{ 

    Mat img1 = imread("C:\\Users\\Hayk\\Desktop\\source1.bmp", CV_LOAD_IMAGE_GRAYSCALE); 
    Mat img2 = imread("C:\\Users\\Hayk\\Desktop\\source2.bmp", CV_LOAD_IMAGE_GRAYSCALE); 
    if(img1.empty() || img2.empty()) 
    { 
     printf("Can't read one of the images\n"); 
     return -1; 
    } 

    // detecting keypoints 
    SurfFeatureDetector detector(6000); 
    vector<KeyPoint> keypoints1, keypoints2; 
    detector.detect(img1, keypoints1); 
    detector.detect(img2, keypoints2); 

    // computing descriptors 
    SurfDescriptorExtractor extractor; 
    Mat descriptors1, descriptors2; 
    extractor.compute(img1, keypoints1, descriptors1); 
    extractor.compute(img2, keypoints2, descriptors2); 

    // matching descriptors 
    FlannBasedMatcher matcher; 
    vector<DMatch> matches; 
    matcher.match(descriptors1, descriptors2, matches); 

    // drawing the results 
    namedWindow("matches", 1); 
    Mat img_matches; 
    drawMatches(img1, keypoints1, img2, keypoints2, matches, img_matches); 
    imshow("matches", img_matches); 
    waitKey(0); 

    return 0; 
}

而这个错误，我正在运行的程序

OpenCV Error: Assertion failed (dataset.type() == CvType<T>::type()) in unknown 
function, file c:\Users\vp\work\ocv\opencv\modules\features2d\..\flann\include\o 
pencv2/flann/flann.hpp, line 105

任何人都可以对我说什么，我做错了之后的故事吗？

来源

2011-12-15 haykart

您是否至少确定了导致此错误的确切线？ – karlphillip 2011-12-16 11:22:28

你的代码在OpenCV 2.3.1a的Linux上工作得很好。

我在使用C++ OpenCV的Windows界面时遇到了一些问题。当我必须使用Windows时，我使用C界面。

来源

2011-12-16 11:49:00 karlphillip

谢谢，我会尝试，但这个代码应该工作，因为我发现它在[官方网站]（http://opencv.itseez.com/doc/user_guide/ug_features2d.html#the-code）只有一个区别在我的代码之间（在官方代码中，他们使用BruteForceMatcher > matcher，但我尝试使用FlannBasedMatcher匹配器;我想知道为什么“flann”不工作，而“brute”正在工作。感谢您的关注我的问题:) – haykart 2011-12-16 12:01:09

同样在这里，使用OpenCV 2.2.x在Linux上正常工作。 – Unapiedra 2011-12-16 12:03:47

你说这是适用于BruteForceMatcher，但不是Flann。我创建了一个最小的例子。你能否运行这个并告诉我，你是否得到了与你的问题相同的错误？

只是试图找出问题所在。

#include <stdio.h> 
#include <iostream> 
#include "opencv2/core/core.hpp" 
#include "opencv2/features2d/features2d.hpp" 
#include "opencv2/highgui/highgui.hpp" 

using namespace cv; 

int main() 
{ 
    // Five descriptors with random values between 0 and 0.2 
    Mat descriptors(5, 64, CV_32FC1); 
    RNG rng; 
    rng.fill(descriptors, cv::RNG::UNIFORM, 0.0, 0.2); 


    // the query descriptor should yield a match in row 3 of the train descriptors 
    Mat query_descriptors; 
    query_descriptors.push_back(descriptors.row(3)); 

    // Match using Brute Force. On your machine this should work. 
    BruteForceMatcher< L2<float> > brute_matcher; 
    vector<DMatch> matches; 
    brute_matcher.match(query_descriptors, descriptors, matches); 
    std::cout << "Brute Force Matcher: " << std::endl; 
    for(int i=0; i<matches.size(); ++i) 
    { 
     std::cout << matches[i].queryIdx << " <--> " << matches[i].trainIdx << std::endl; 
    } 


    // The code should fail here because we are now going to use the FlannBasedMatcher 
    std::cout << "Flann Based Matcher: " << std::endl; 
    FlannBasedMatcher matcher; 
    matcher.match(query_descriptors, descriptors, matches); 
    for(int i=0; i<matches.size(); ++i) 
    { 
     std::cout << matches[i].queryIdx << " <--> " << matches[i].trainIdx << std::endl; 
    } 

    return 0; 
}

来源

2011-12-16 12:23:42 Unapiedra

OpenCV flann.h断言错误

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