cpbridge/rifeatures

A small C++ library for efficient calculation of rotation invariant features in 2D images using OpenCV.

rifeatures's Issues

Question about extract rotation invariant feature from image

Hi @CPBridge, I tries to extract rotation invariant HOG feature and find your package that have implement the Fourier HOG Descriptor. In the example of rotinv_test.cpp, a first 20 points is shown to get the values of the derived rotation invariant features, and finally 20-d feature is extracted. I reference your example to extract the rotation invariant HOG feature from single image, but I have no idea how to set the image_locations.size(). Would you like to give me some help so that I can extract the feature?