opencv示例不起作用(detectors_descriptors_evaluation.cpp)

Question

我想使用detector_descriptor_evaluation.cpp数据集在OpenCV中运行opencv_extra示例。然而，我发现了SIFT，冲浪探测器的错误，我不能使用匹配器。我想知道是否有人有这些问题，我要解释。

主函数创建一个具有不同检测器和/或匹配器类型的DetectorQualityEvaluator类对象，如下所示：

Ptr<BaseQualityEvaluator> evals[] =
{
    new DetectorQualityEvaluator( "FAST", "quality-detector-fast" ),
    new DetectorQualityEvaluator( "GFTT", "quality-detector-gftt" ),
    new DetectorQualityEvaluator( "HARRIS", "quality-detector-harris" ),
    new DetectorQualityEvaluator( "MSER", "quality-detector-mser" ),
    new DetectorQualityEvaluator( "STAR", "quality-detector-star" ),
    new DetectorQualityEvaluator( "SIFT", "quality-detector-sift" ),
    new DetectorQualityEvaluator( "SURF", "quality-detector-surf" ),
    new DescriptorQualityEvaluator( "SIFT", "quality-descriptor-sift", "BruteForce" ),
    new DescriptorQualityEvaluator( "SURF", "quality-descriptor-surf", "BruteForce" ),
    new DescriptorQualityEvaluator( "FERN", "quality-descriptor-fern"),
    new CalonderDescriptorQualityEvaluator()
};

程序工作良好，直到SIFT和冲浪探测器，但它提供了“算法不能读取”错误。换句话说，我不能创建这些探测器。当我不创建SIFT和冲浪探测器

    //new DetectorQualityEvaluator( "SIFT", "quality-detector-sift" ),
    //new DetectorQualityEvaluator( "SURF", "quality-detector-surf" ),

我得到以下错误：

   OpenCV Error: Assertion failed (!extractor.empty() && !matcher.empty()) in VectorDescriptorMatcher, file /home/sy/opencv-2.4.8/modules/features2d/src/matchers.cpp, line 1089

当我使用以下代码时

    //new DetectorQualityEvaluator( "SIFT", "quality-detector-sift" ),
    //new DetectorQualityEvaluator( "SURF", "quality-detector-surf" ),
    //new DescriptorQualityEvaluator( "SIFT", "quality-descriptor-sift", "BruteForce" ),
    //new DescriptorQualityEvaluator( "SURF", "quality-descriptor-surf", "BruteForce" ),
    new DescriptorQualityEvaluator( "FERN", "quality-descriptor-fern"),
    new CalonderDescriptorQualityEvaluator()

我在下面也会犯错误。我想它认不出“弗恩”这个词了。在本例中，只有CalonderDescriptor才能工作。

  OpenCV Error: Bad argument (Unknown matcher name) in create, file /home/sy/opencv-2.4.8/modules/features2d/src/matchers.cpp, line 488

问候

Answer 1

我也遇到了同样的失败。经过一些调试后，我发现对于SIFT和SURF，您将需要非空闲模块，这在示例代码中是缺失的。加：

#include "opencv2/nonfree/nonfree.hpp"

然后在main()中插入以下内容：

cv::initModule_nonfree();

行前：

Ptr<BaseQualityEvaluator> evals[] =

问候