Abstract
Most existing methods for image copy-move forgery detection(CMFD)operate on grayscale images. Although the keypoint-based methods have the advantages of strong robustness and low computational cost, they cannot identify the flat duplicated regions without reliable extracted features. In this paper, we propose a new CMFD method by using speeded-up robust feature(SURF)in the opponent color space. Our method starts by converting the inspected image from RGB to the opponent color space. The color gradient per pixel is calculated and taken as the work space for SURF to extract the keypoints. The matched keypoints are clustered and their geometric transformations are estimated. Finally, the false matches are removed. Experimental results show that the proposed technique can effectively expose the duplicated regions with various transformations, even when the duplication regions are flat.
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Supported by the Natural Science Foundation of Tianjin(No. 15JCYBJC15500).
Gong Jiachang, born in 1983, male, doctorate student.
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Gong, J., Guo, J. Image copy-move forgery detection using SURF in opponent color space. Trans. Tianjin Univ. 22, 151–157 (2016). https://doi.org/10.1007/s12209-016-2705-z
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DOI: https://doi.org/10.1007/s12209-016-2705-z