I somehow managed to detect corepoint for my fingerprint recognition project,it is very important step in recognition so i thought i need to post this here,i almost finished the remaining steps in my project(paper courtesy: Matching technique using Gabor Filters).i have attached the source code of core point detection.just download them and run the TEST.m file.

http://www.2shared.com/file/2863630/e271d95c/matlabfiles.html