Copy move image forgery detection using SIFT FEATUR MATCHING

Hello everyone.. i am making a project to > Detect Copy move image forgery >using SIFT feature matching >on MATLAB Basically, SIFT stands for Scale Invariant Feature Transform. I want to first detect and extract SIFT descriptors in an image. And then match these features with other to find duplicate regions in that particular image. Code for extracting SIFT FEATURES IS ATTACHED. Kindly help to match those features and highlight the matched features. OR Any new code or any other help will also be appreciated. Thanksss alot:)