G - Physics – 06 – T
Patent
G - Physics
06
T
350/33
G06T 9/00 (2006.01) H04N 7/26 (2006.01) H04N 7/50 (2006.01)
Patent
CA 1320563
MOVING IMAGE SIGNAL CODING SYSTEM ABSTRACT OF THE DISCLOSURE A system of coding moving image signals for pro- ducing a predictive error signal by a predictive coding based on inter-frame correlation and quantizing by a quantization unit the produced predictive error signal for each block of a picture frame constituted by N lines of M pixels includes a block coding/non-coding decision unit for calculating a first evaluation value Sm of the predictive error signal for each block of the picture frame and deciding that a block non-coding is applicable when the first evaluation value Sm is less than a first threshold value T1 , and deciding that a block coding is applicable when the first evaluation value Sm is greater than the first threshold value T1. The predictive error signal is not transmitted when the result of the decision is for a block non-coding, and the predictive error signal is quantized and transmitted when the result of the decision is for a block coding.
551423
Hatori Yoshinori
Kato Yoichi
Kosugi Yasuhiro
Ohta Mutsumi
Corporation Nec
Fujitsu Limited
Kokusai Denshin Denwa Co. Ltd.
Mcfadden Fincham
Nippon Telegraph & Telephone Corporation
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