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Hi, I am using KNN with BoW for a classifying problem. My question is how can I add some decision threshold to the KNN classifier, I mean, If the value is higher than a threshold consider that the classification has been done well, if not, show the best two classes of the results.

-It is an OpenCV plugin for Unity. A clone of OpenCV3.1 Java bindings.

• I get the BoW clustering the ORB descriptors of a set of training images. After that, I train the SVM classifier with the histogram of BoWs of the training images.
• What do you mean with what kind of "responses" do I use for training?

Hi again, I am having some problems with SVM classifier. I want to classify "histograms" of Bag of words, ORB feature descriptors. I define the SVM type as follow:

svm = SVM.create (); svm.setType (SVM.C_SVC); svm.setKernel (SVM.POLY); //svm.setTermCriteria(newTermCriteria(TermCriteria.MAX_ITER,100,1e-6)); svm.setTermCriteria (new TermCriteria (TermCriteria.EPS, 100, 1e-6));

The problem is that when I do the classification I don't get any class label. The output are as if I were doing regression whereas I am trying to do classification.

Thanks!

I am using the KNN classifier with BoW descriptor histograms. I would like to find a threshold between the matches. So that if the value is higher than a threshold consider that the classification has been done well, if not, show the best two classes of the results. How can I do that?

Thanks for your support. As I said, I am using an OpenCV plugin inside Unity which doesn't have the BOW class functions. Finally, I have already done it by myself.

HI!

Please, does anybody know how can I use the OpenCV functions inside my Unity projects?

Thank you all!!!!

Hi! Does anyone know how to implement BOW clustering and obtaining the histogram BUT without using the BOW classes in OpenCV?

• I am using a OpenCV plugin inside Unity and it doesn't contain this BOW functions.

Thank you all!