Multiple block-size transform video coding using an asymmetric s

Details Multiple block-size transform video coding using an asymmetric s Multiple block-size transform video coding using an asymmetric s

1990-08-24

1992-03-17

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358133, H04N 712

Patent

active

050973312

ABSTRACT:
A sub-band coder for video signals is disclosed, which is easily realizable in VLSI due to its simple structure. The coder uses sets of two-tap finite impulse response (FIR) filters having equal-magnitude coefficients to decompose the video signal at multiple stages. In the preferred embodiment the sub-band coder has an asymmetrical structure. With the arrangement, the sub-band decomposition effects what is equivalent to a multiple block-size Hadamard transform of the video signal in which coefficients are transmitted from various block-sized transforms of larger blocks of pixel data.

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"Compatible HDTV Coding for Broadband ISDN," IEEE Globecom, Florida, Dec. 1988, 1988, K. H. Tzou, T. C. Chen, P. E. Fleischer and M. I. Liou.

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