Apparatus for encoding a video signal by using modified block tr

Details Apparatus for encoding a video signal by using modified block tr Apparatus for encoding a video signal by using modified block tr

1996-03-25

1998-01-20

Boudreau, Leo

Image analysis

Image compression or coding

Contour or chain coding

382243, G06K 900

Patent

active

057108382

ABSTRACT:
An apparatus for encoding a input video signal having a plurality of video frames each of which may be divided into a multiplicity of non-overlapping blocks of K.times.K pixels by using a modified BTC method and a contour coding method, with the apparatus including a masking block for providing a binary frame of the input video signal, a contour coding block for generating contour and binary information for the binary frame, a control block, for each binary block derived from the binary frame, for determining a number L and a control signal, a modified BTC block, for each video block derived from the input video signal, for generating a mean value and two reconstruction values based on intensity values of the K.times.K pixels within each video block and the number L, and selecting either the mean value or the two reconstruction values in response to the control signal.

REFERENCES:
patent: 3805028 (1974-04-01), Morton
patent: 4737921 (1988-04-01), Goldwasser et al.
patent: 5594504 (1997-01-01), Ebrahimi

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