匹配器断言失败错误opencv Android

我正在编写代码以在camerapreview中查找drawable中的类似对象。我正在使用最新的Opencv 2.4.4。匹配器断言失败错误opencv Android

下面是我的函数和logcat的输出。我做错了什么，我得到这样的输出？

public void detect_image (Mat mRgba) { 

    object_desc = new Mat(); 
    scene_desc = new Mat(); 

    object_keys = new MatOfKeyPoint(); 
    scene_keys = new MatOfKeyPoint(); 

    matches = new MatOfDMatch(); 
    good_matches = new MatOfDMatch(); 

    Bitmap image = BitmapFactory.decodeResource(getResources(), R.drawable.sto); 
    Utils.bitmapToMat(image,object); 

    surf = FeatureDetector.create(FeatureDetector.FAST); 
    surf.detect(object, object_keys); 
    surf.detect(mRgba, scene_keys); 
    surfEX = DescriptorExtractor.create(DescriptorExtractor.BRIEF); 
    surfEX.compute(object, object_keys, object_desc);  
    surfEX.compute(mRgba, scene_keys, scene_desc); 
    dm = DescriptorMatcher.create(DescriptorMatcher.BRUTEFORCE_SL2);  
    dm.match(object_desc, scene_desc, matches); 

    double max_dist = 0; 
    double min_dist = 100; 

    for(int i = 0; i < object_desc.rows(); i++) 
     { double dist = matches.toArray()[i].distance; 
     if(dist < min_dist) min_dist = dist; 
     if(dist > max_dist) max_dist = dist; 
     } 

    for(int i = 0; i < object_desc.rows(); i++) 
     { MatOfDMatch temp = new MatOfDMatch(); 
     if(matches.toArray()[i].distance < 3*min_dist) 
     { temp.fromArray(matches.toArray()[i]); 
      good_matches.push_back(temp); 
      }   
     } 

} 



public Mat onCameraFrame(CvCameraViewFrame inputFrame) {   
    mRgba = inputFrame.rgba(); 
      detect_image(mRgba); 
    return inputFrame.rgba(); 
}

的logcat：

03-27 01:55:31.258: E/cv::error()(564): OpenCV Error: Assertion failed 
(type == src2.type() && src1.cols == src2.cols && 
(type == CV_32F || type == CV_8U)) in void cv::batchDistance(cv::InputArray, 
cv::InputArray, cv::OutputArray, int, cv::OutputArray, int, int, cv::InputArray, 
int, bool), file /home/reports/ci/slave/50-SDK/opencv/modules/core/src/stat.cpp, 
line 1803

来源

2013-03-27 Martus0

哪一行正好是在此断言失败？你确定'surf.detect（）'可以接受一个位图作为输入吗？它不应该是一个垫子？ – JonesV 2013-03-27 06:42:31

surf.detect（）需要垫子和物体，而mRgba是垫子。下面的代码导致这些问题： dm.match（object_desc，scene_desc，matches）; – Martus0 2013-03-27 10:40:01

我的错误，我没有见过'Utils.bitmapToMat（）'。你是否手动验证了'object_desc.type == scene_desc.type'和'object_desc.cols == object_scene.cols'？显然你的'object_desc'和'scene_desc'之间有某种不兼容...... – JonesV 2013-03-27 12:41:14

就关闭这个问题的缘故：

根据您的意见，下面一行是造成问题：

dm.match(object_desc, scene_desc, matches);

我建议您手动验证：

(object_desc.type == scene_desc.type && 
object_desc.cols == object_scene.cols)

问题最终是第一帧，object_desc.cols() != scene_desc.cols()。一个简单的if就足以解决这个问题。

来源

2013-03-28 06:39:58 JonesV

你先生，我的英雄。花了两天时间来解决这个问题！ +1 – 2014-06-04 09:49:34

Open Cv Mat doestn't有类型的方法现在请你更新这个答案 – Crawler 2016-06-08 07:28:00

嗨@LiamGeorgeBetsworth ....你能告诉我你是如何解决这个问题的，因为我使用了下面的方法，错误仍然存在如果（thisHisto.type（）== toCompareHisto.type（）&& thisHisto.cols（）== toCompareHisto.cols（））{ matcher.match（thisHisto，toCompareHisto，matches）; } – AwaisMajeed 2017-08-23 07:30:04

（打开了Cv垫doestn't有类型的方法）尝试此方法..

public void match(Mat object_desc, Mat scene_desc, MatOfDMatch matches) 
{ 
    if(object_desc.type() == scene_desc.type() && 
      object_desc.cols() == scene_desc.cols()) {    
     match_1(nativeObj, object_desc.nativeObj, scene_desc.nativeObj, matches.nativeObj); 
    } 

}

来源

2017-06-30 06:11:01

匹配器断言失败错误opencv Android

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