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Comment on "Shape-adaptive DCT for generic coding of video"

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3 Author(s)
Bi, M. ; Dept. of Electr. Eng., Nat. Univ. of Singapore, Singapore ; Ong, S.H. ; Ang, Y.H.

Contrary to one of the key conclusions of the paper by Sikora and Makai (see ibid., vol.5, no.1, p.5962, 1995), the cross-correlation of the one-dimensional shape-adaptive DCT (1-D SA-DCT) coefficients located in two columns of different sizes does not necessarily take maximum values at the same indices. The correct way to measure the cross-correlation of the SA-DCT coefficients after the first stage of the transform is presented. The idea of implementing shape-adaptive DCT and some aspects of their work could nevertheless be useful.

Published in:

Circuits and Systems for Video Technology, IEEE Transactions on  (Volume:6 ,  Issue: 6 )

Date of Publication:

Dec. 1996

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