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A Novel Image Signature based on Local Representative Pattern Mining

Copy Detection plays a critical and unique role in copyright infringement detection. This paper proposes a novel method that is able to find copies in large amount of images database efficiently and effectively. By mining the Representative Patterns (PR) about local keypoints, a robust binary image signature is built according to the spatial distribution of these selected patterns. The performance of this method is evaluated on benchmark datasets INRIA Holidays. It only needs 16 bytes that could handle serious image transformations such as 20% cropping. Results shows that only at one fourth (8.9 ms per image) of BRISK feature extracting time and 0.4% of GIST memory usage, our method has a comparable precision and robustness compared with the state-of-art methods of image signature for large-scale copy detection.