MC predicting apparatus

Details MC predicting apparatus MC predicting apparatus

1992-06-10

1993-10-05

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358105, 358135, H04N 7137

Patent

active

052510301

ABSTRACT:
An MC predicting apparatus which ensures a high prediction accuracy against input image signal stream and avoids arithmetic operation of an evaluation function from becoming an overhead for an image encoding process is provided. Sequence numbers given to respective frames are discriminated, and a degree of interframe correlation is decided from a difference in sequence number of the preceding and current frames. A reference block generator adaptively controls, depending on the degree of interframe correlation, the reference range of MC prediction of the preceding frame stored in a frame memory. As a result, the number of times of arithmetic operation of an evaluation function for MC prediction can be reduced and a prediction accuracy can be improved.

REFERENCES:
patent: 4307420 (1981-12-01), Ninomiya et al.
patent: 4670851 (1987-06-01), Murakami et al.
patent: 4689673 (1987-08-01), Ohki et al.
patent: 4933761 (1990-06-01), Murakami et al.
Anil K. Jain, "Image Data Compression: A Review" Proceedings of the IEEE, Mar. 3, 1981.
International Telegraph & Telephone Consultative Committee, Study Group XV-Report R 37.

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