Issues in code 'Rotational copy-move forgery detection using SIFT and region growing strategies'

Few difficulties faced while developing code of the paper "Rotational copy-move forgery detection using SIFT and region growing strategies", that are:

Difficulty in implementing Hu’s invariant moments with threshold δh

Difficulty in comparing final copy-move region after region growing with δr

       i.e,   | ri | > δr  