Embedded coding system for video signals

Details Embedded coding system for video signals Embedded coding system for video signals

1990-05-02

1991-03-19

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

364725, H04N 7133

Patent

active

050015613

ABSTRACT:
A video processing system is disclosed that separates and separately encodes and decodes the low and high spatial frequency coefficients of images for transmission or storage. Each block of an image is transformed into the frequency domain. High frequency coefficients of the resulting transform matrix are separated from the low frequency coefficients. The low frequency coefficients are motion prediction compensated to derive motion vectors and a prediction error signal. The motion vectors, prediction error signal and high frequency coefficients are channel encoded for storage or transmission. In a receiver, the motion vectors and prediction error signal are used to reconstruct a low frequency motion-compensated version of the image. The high frequency coefficients are inverse transformed into the pel domain and are combined with the reconstructed low frequency verison of the image to reconstruct a version of the original image.

REFERENCES:
patent: 4707738 (1987-11-01), Ferre et al.
patent: 4805030 (1989-02-01), Tanaka
patent: 4941043 (1990-07-01), Jass
patent: 4958226 (1990-09-01), Haskell
"Adaptive Coding of Monochrome and Color Images", IEEE Transactions on Communications, vol. Com. 25, No. 11, Nov., 1977.
Digital Pictures, Representation and Compression by Arun N. Netravali and Barry G. Haskell, pp. 334-340.
Conditional Motion Compensated Interpolation (co-pending application Ser. No. 413,520, filed on Sep. 27, 1989 and allowed on Apr. 5, 1990).

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