Method and apparatus for coding motion image signal

Details Method and apparatus for coding motion image signal Method and apparatus for coding motion image signal

H - Electricity

04

N

350/33

H04N 7/50 (2006.01) G06T 9/00 (2006.01) H04N 7/30 (2006.01)

Patent

CA 1266912

Abstract of the Disclosure An encoder in an encoder/decoder system includes a circuit for orthogonally transforming an input image signal, a circuit for receiving the input image signal, judging which orthogonal transformation coefficient is to be omitted and which orthogonal transformation coefficient is to be interframe-coded, and outputting a judgment result as mode information, and a circuit for receiving an output signal from the orthogonal transformation circuit, omitting the orthogonal transformation coefficient according the mode information, and outputting a coded image signal. In a decoder in the encoder/decoder system, the orthogonal transformation coefficient is omitted on the basis of the mode information sent from the encoder, thereby decoding the image signal.

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