Coded picture information decoding apparatus having means for im

Details Coded picture information decoding apparatus having means for im Coded picture information decoding apparatus having means for im

1990-11-13

1992-09-08

Peng, John K.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358136, 358 12, 358166, 358 37, H04N 712, H04N 964

Patent

active

051463261

ABSTRACT:
A coded picture information decoding apparatus includes a decoder part for decoding a code word corresponding to a serious of transfer coefficients obtained by carrying out a discrete cosine transform for picture information to be transmitted in a block unit obtained by dividing the picture information on a coder side and for reproducing the series of transfer coefficients, and an inverse transform part for carrying out an inverse discrete cosine transform for the series of transfer coefficients reproduced by the decoder part in the block unit and for outputting reproduced picture information. The apparatus also includes a prediction part for predicting, in the block unit, whether or not a picture distortion will occur on the basis of the transfer coefficients obtained in the block unit and for outputting a prediction result obtained in the block unit. Further, the apparatus includes an image processing unit for carrying out a predetermined image process of preventing the occurrence of the picture distortion for the reproduced picture information related to a block indicated by the prediction result showing that the occurrence of the picture distortion is predicted.

REFERENCES:
patent: 4504860 (1985-03-01), Nicol et al.
patent: 4704628 (1987-11-01), Chen et al.
patent: 4807029 (1989-02-01), Tanaka
patent: 4958226 (1990-09-01), Haskell et al.
patent: 4972260 (1990-11-01), Fujikawa et al.
patent: 4984076 (1991-01-01), Watanabe et al.
patent: 4985768 (1991-01-01), Sugiyama

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