I need to introduce some few strong sift key points in an image. I have studied SIFT algorithm(few concepts are not clear), but while reading a paper, they are introducing new sift key points as a watermark by updating the pixel intensity value non-linearly. I am not able to link with the theory of SIFT concept with this one. Any suggestions on this regard will be very helpful for me. If I want to introduce a new sift key point in an image, what I want to do?? Thanks in advance.
What do you mean by introduce a SIFT keypoint? Are you using David G. Lowe algorithm?
This paper talks about introduction of new SIFT keypoints. The idea is to introduce new keypoints to create image forgery.
Conference Paper SIFT keypoint removal and injection for countering matching-...
Hi, to study more about SIFT you, the bellow site will be useful:
http://opencv-python-tutroals.readthedocs.org/en/latest/py_tutorials/py_feature2d/py_sift_intro/py_sift_intro.html
and maybe this paper can be help you to solve your problem:
http://www.google.com/url?sa=t&rct=j&q=introduce+new+sift+keypoints&source=web&cd=22&cad=rja&uact=8&ved=0CCUQFjABOBQ&url=http%3A%2F%2Farthronav.isr.uc.pt%2F~francisco%2Ffiles%2Fjournaltmp.pdf&ei=oNqUVcWXNsSoUeutu9gL&usg=AFQjCNE8sy7g6ZonSRPliKUHIZLT0nAEgQ&bvm=bv.96952980,d.bGg
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