Matcher Assertions failed error opencv Android

Question

I\'m writing code to find similar object from drawable in camerapreview. I am using the newest Opencv 2.4.4.

Below are my functions and an output from logcat. What a

Answer 1

(Open Cv Mat doestn't have type method) Try this method..

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);
    }

}

Answer 2

Just for the sake of closing this question:

According to your comment, the following line was causing the problem:

dm.match(object_desc, scene_desc, matches);

I advised you to manually verify that:

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

The problem was eventually that for the first frame, object_desc.cols() != scene_desc.cols(). A simple if was enough to solve the problem.