1 December 1996 Improved image reproduction from dc components
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Abstract
The Joint Photographic Expert Group standard provides a block smoothing method, that can be used to improve the visual quality of images reproduced from the dc coefficients alone. The method predicts ac coefficients of a block in terms of the dc values of the surrounding blocks. This note presents a new set of prediction equations. Experiments show that the proposed equations produce noticeable improvements in the visual quality of the reconstructed images.
Gopal Lakhani, "Improved image reproduction from dc components," Optical Engineering 35(12), (1 December 1996). https://doi.org/10.1117/1.601106
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