Hi, i got a question. How can I possibly use bagOfFeatures with bulded in Matlab extractors like 'extractHOGFeatures' or 'extractLBPFeatures'. I'm doing an Image Category Classification program based on this: "https://www.mathworks.com/help/vision/examples/image-category-classification-using-bag-of-features.html". Bag of features normally use SURF features, which is working well for my histopatological photos, but i wan't to compare the result with different descriptors. How do i use this 3 descriptors i wrote in title with bagOfFeatures function?