JPEG compression history estimation for color images

  title={JPEG compression history estimation for color images},
  author={Ramesh Neelamani and Ricardo L. de Queiroz and Zhigang Fan and Sanjeeb Dash and Richard G. Baraniuk},
  journal={IEEE Transactions on Image Processing},
We routinely encounter digital color images that were previously compressed using the Joint Photographic Experts Group (JPEG) standard. En route to the image's current representation, the previous JPEG compression's various settings-termed its JPEG compression history (CH)-are often discarded after the JPEG decompression step. Given a JPEG-decompressed color image, this paper aims to estimate its lost JPEG CH. We observe that the previous JPEG compression's quantization step introduces a… CONTINUE READING
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