[Ronsenshi]

I think depending on the need Neural Network feature detection/description might be an overkill.

What is great about stuff like SIFT and more modern ORB, BRISK and AKAZE is that they are fast and given appropriate implementation they would work just as well as Neural Network would. I haven't researched NN computer vision whole lot, but it seems like it might be slower in feature detection/description compared to traditional approach. If that's the case then for live/near-live video processing NN won't work that well.