Coding and decoding device for time-varying image

Details Coding and decoding device for time-varying image Coding and decoding device for time-varying image

H - Electricity

04

N

H04N 7/30 (2006.01) G06T 9/00 (2006.01) H04N 7/26 (2006.01) H04N 7/34 (2006.01) H04N 7/50 (2006.01) H04N 7/133 (1990.01) H04N 7/137 (1990.01)

Patent

CA 2091579

ABSTRACT A motion picture encoding/decoding system is provided, which permits high picture quality to be obtained with less information amount than that in case of a system having only the function of DCT coding, permits reduction of block distortion of reproduced picture and permits coding efficiency increase. One picture frame is divided into a plurality of blocks for block-by-block coding. At this time, discrete cosine transform (DCT) coding and intra-block predictive coding (NTC) are adaptively switched one over to the other according to the character of pattern. In case of the intra-block predictive coding, predictive values of block and quantizing width are transmitted.

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