STIP is a useful tool for detecting spatial changes over time in a series of images. I am looking for a MATLAB implementation that is efficient and well-documented.
I do not know of any easily available Matlab implementation. The aforementioned code on github unfortunately does not calculate these points, it simply reads pre-computed STIPs from a file and processes them.
The implementation of STIPs is not too difficult though - the devil will be in the details, I guess (such as whether you want to do scale selection or something similar, etc.)...