The relationship of transform coefficients for differing transforms and/or differing subblock sizes

Authors:
B.J. Davis;S.H. Nawab
Affiliations:
Dept. of Electr. & Comput. Eng., Boston Univ., MA, USA;-
Venue:
IEEE Transactions on Signal Processing
Year:
2004

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Abstract

Jiang and Feng have developed a relationship between the discrete cosine transform (DCT) coefficients of a block and those of its subblocks. Their derivation of this result can be significantly simplified. The new derivation also generalizes to all linear, invertible transforms and any separable subblock geometry.