Improved image reproduction from dc components

Gopal Lakhani

doi:10.1117/1.601106

1 December 1996 Improved image reproduction from dc components

Gopal Lakhani

Optical Engineering, Vol. 35, Issue 12, (December 1996). https://doi.org/10.1117/1.601106

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.

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Gopal Lakhani "Improved image reproduction from dc components," Optical Engineering 35(12), (1 December 1996). https://doi.org/10.1117/1.601106

Published: 1 December 1996

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