OpenCV flannh断言错误

OpenCV flann.h assertion Error

本文关键字：错误 断言 flannh OpenCV      更新时间：2023-10-16

我写了一个程序，得到两张图片之间的匹配。这是代码。但如果我使用BruteForceMatcher>(不是flann)它工作。

#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 matchern"
    "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 imagesn");
        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;
}

和这个错误后，我得到的程序

OpenCV Error: Assertion failed (dataset.type() == CvType<T>::type()) in unknown
function, file c:Usersvpworkocvopencvmodulesfeatures2d..flannincludeo
pencv2/flann/flann.hpp, line 105
谁能告诉我我做错了什么?

您的代码在Linux上运行良好，使用OpenCV 2.3.1a

我在使用c++ OpenCV的Windows接口时遇到了几个问题。当我必须使用Windows时，我使用C接口。

你说它是与BruteForceMatcher工作，但不是Flann。我创建了一个最小的例子。你能运行这个程序并告诉我，你是否得到了你在问题中得到的相同的错误?

我只是想把问题弄清楚。

#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;
}
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