Image coding using weighted cosine transform
Refereed conference paper presented and published in conference proceedings


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AbstractA new orthogonal transform, called weighted cosine transform (WCT), is developed for digital image coding applications. The new transform is characterized. The transform matrix is the weighted version of that in the discrete cosine transform (DCT). Various commonly used criteria based on the one-dimensional and two-dimensional Markov models have shown that the performance of the order-8 and order-16 WCT is better than the DCT and the phase-shift cosine transform (PSCT), which is an improved version of the DCT. A fast computational algorithm for the WCT is also derived, which, however, requires more computational efforts than the DCT.
All Author(s) ListLo Kwok-tung, Cham Wai-kuen
Name of Conference1990 IEEE Region 10 Conference on Computer and Communication Systems - IEEE TENCON '90
Start Date of Conference24/09/1990
End Date of Conference27/09/1990
Place of ConferenceHong Kong
Country/Region of ConferenceHong Kong
Year1990
Month12
Day1
Pages464 - 468
ISBN0879425563
LanguagesEnglish-United Kingdom

Last updated on 2021-16-06 at 23:12