Java: how to set up parameters for AKAZE features in OpenCv 3.0
I want to set parameters for AKAZE features in OpenCV 3.0 based on this post http://answers.opencv.org/question/31... I have successfully set parameters to ORB but it did not work for AKAZE. I am setting parameters based on documentation. Here is my code:
fd = FeatureDetector.create(FeatureDetector.AKAZE);
File outputDir = getCacheDir();
File outputFile = File.createTempFile("AKAZEDetectorParams", ".YAML", outputDir);
writeToFile(outputFile, "%YAML:1.0\ndescriptor_type: 1\ndescriptor_size: 0\ndescriptor_channels: 3\nthreshold: 0.001\nnOctaves: 4\nsublevels: 4\ndiffusivity: 1\n");
fd.read(outputFile.getPath());
fd.detect(originalImage, keyPointsEnvMap); //Crush
It crush on fd.detect() with the Error: OpenCV Error: Assertion failed (evolution_.size() > 0) in int cv::AKAZEFeatures::Create_Nonlinear_Scale_Space(const cv::Mat&), file /builds/master_pack-android/opencv/modules/features2d/src/kaze/AKAZEFeatures.cpp, line 102
When I comment out reading of the parameters it works fine. Pleas help me!
hmm, can you try to save the default params to disk like
fd.write("my.yml");?imho it should be e.g.
descriptor: 1notdescriptor_type: 1. also please have a look at the possible values hereis AKAZE faster ?, i m using the same feature extracter, but it is very slow.