Detecting doubly compressed JPEG images by using Mode Based First Digit Features

  title={Detecting doubly compressed JPEG images by using Mode Based First Digit Features},
  author={Bin Li and Yun Q. Shi and Jiwu Huang},
  journal={2008 IEEE 10th Workshop on Multimedia Signal Processing},
In this paper, we utilize the probabilities of the first digits of quantized DCT (discrete cosine transform) coefficients from individual AC (alternate current) modes to detect doubly compressed JPEG images. Our proposed features, named by mode based first digit features (MBFDF), have been shown to outperform all previous methods on discriminating doubly compressed JPEG images from singly compressed JPEG images. Furthermore, combining the MBFDF with a multi-class classification strategy can be… CONTINUE READING
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Distributions of the two dimensional DCT coefficients for images

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