New folding operators for image compression

Bjorn D. Jawerth; Yi Liu; Wim Sweldens

doi:10.1117/12.170024

15 March 1994 New folding operators for image compression

Bjorn D. Jawerth, Yi Liu, Wim Sweldens

Proceedings Volume 2242, Wavelet Applications; (1994) https://doi.org/10.1117/12.170024
Event: SPIE's International Symposium on Optical Engineering and Photonics in Aerospace Sensing, 1994, Orlando, FL, United States

Abstract

We discuss bases formed by smooth local trigonometric functions and their applications to image compression. It is known that these bases can reduce the blocking effect that occurs in JPEG. We present and compare two generalizations of the original construction of Coifman and Meyer: biorthogonal and equal parity folding. They have the advantage that constant and linear components can be represented efficiently. We show how they reduce the blocking effect and improve the mean square error.

Citation Download Citation

Bjorn D. Jawerth, Yi Liu, and Wim Sweldens "New folding operators for image compression", Proc. SPIE 2242, Wavelet Applications, (15 March 1994); https://doi.org/10.1117/12.170024

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