OpenCV feature matching for multiple images

Question

How can I optimise the SIFT feature matching for many pictures using FLANN?

I have a working example taken from the Python OpenCV docs. However this is comparing one

Answer 1

Here are several pieces of my advice:

1. You should reduce the amount of point data by using proper techniques.
2. Calculate the reference image repeatedly is a waste. You should persistent all calculated reference.
3. Do not put the calculate on a mobile device. You'd better upload the calculated reference of a captured image to a powerful server and do the searching there.

This is a very interesting topic. My ears are opening too.