Image encoding system

Details Image encoding system Image encoding system

1996-08-29

1999-07-20

Lee, Thomas D.

Image analysis

Image compression or coding

Adaptive coding

382236, H04N 730

Patent

active

059265744

ABSTRACT:
In an image encoding system, an input image signal is blocked, the resultant blocks are transformed into two or more kinds of transformed coefficients, the transformed coefficients are quantized according to a given quantizing step size, the quantized transformed coefficients are scanned according to a plurality of scan sequences, the thus scanned coefficients are further encoded according to a plurality of encoding tables, and, out of combinations of the plurality of scan sequences with the plurality of encoding tables, a combination of a scan sequence with an encoding table which provides the highest encoding efficiency is selected by scan sequence and encoding table selector.

REFERENCES:
patent: 4951140 (1990-08-01), Ueno et al.
patent: 5402244 (1995-03-01), Kim
patent: 5432555 (1995-07-01), Park
International Organization for Standarization Organization Coding of Moving Pictures and Associated Audio, K. Asai et al (2 pages).
Musmann, Hans Georg "Object-Oriented Analysis-Synthesis Coding of Moving Images," Signal Processing: Image Communication, vol. 1, No. 2 (Oct. 1989), pp. 117-138.

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