Image Hash is the descriptor or identifier of image which can be used for evaluating the similarity among candidate images. Histogram based image hashing techniques are known for having robustness against tampers of general image processing modificati...
Image Hash is the descriptor or identifier of image which can be used for evaluating the similarity among candidate images. Histogram based image hashing techniques are known for having robustness against tampers of general image processing modification and geometrical distortion, thought a number of image hashing methods have been developed. It proposes histogram based image hashing method, adopting image quantization and user defined windowing as pre-processing steps, generating robust image hash string. These two steps make input image characterized. It also develope hash decision algorithm which is robust to statistical errors. The result of proposed paper shows that it is comparable to previous robust hashing techniques.