Approximate Detection Method for Image Up-Sampling

• Ching-Ting Tu,
• Hwei-Jen Lin,
• Fu-Wen Yang,
• Hsiao-Wei Chang,

Vol. 8, No. 2, February 26, 2014
10.3837/tiis.2014.02.008, Download Paper (Free):

• image forgery
• copy-move
• resampling rate
• resampling factor
• zeroing mask

Abstract

This paper proposes a new resampling detection method for images that detects whether an image has been resampled and recovers the corresponding resampling rate. The proposed method uses a given set of zeroing masks for various resampling factors to evaluate the convolution values of the input image with the zeroing masks. Improving upon our previous work, the proposed method detects more resampling factors by checking for some periodicity with an approximate detection mechanism. The experimental results demonstrate that the proposed method is effective and efficient.

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