发明名称 |
Video encoder and decoder |
摘要 |
<p>A moving image coding apparatus, a moving image decoding apparatus and a moving image coding-decoding apparatus suitable for use when a moving image is compressed and transmitted have a prediction error signal generating means (1) for dividing an inputted image into blocks each consisting of plural pixels and computing a difference between the inputted image and a predicted image generated from a past inputted image to generate a prediction error signal, an amplitude modulating means (2) for conducting amplitude modulation on an amplitude of each pixel of the prediction error signal at a predetermined modulation factor, a transforming means (3) for transforming the prediction error signal having been undergone amplitude modulation in order to remove correlation among the pixels to generate a transform coefficient, a quantizing means (4) for quantizing the generated transform coefficient, and a channel coding means (5) for assigning a code to the quantized transform coefficient and outputting it, whereby a visually prominent error can be decreased over an entire block when the moving image is coded and decoded. <IMAGE></p> |
申请公布号 |
EP0784408(A2) |
申请公布日期 |
1997.07.16 |
申请号 |
EP19960402262 |
申请日期 |
1996.10.24 |
申请人 |
FUJITSU LIMITED |
发明人 |
NAKAGAWA, AKIRA;KAZUI, KIMIHIKO;MORIMATSU, EISHI |
分类号 |
G06T9/00;H03M7/36;H04N19/103;H04N19/107;H04N19/134;H04N19/136;H04N19/137;H04N19/139;H04N19/14;H04N19/176;H04N19/189;H04N19/196;H04N19/423;H04N19/46;H04N19/463;H04N19/50;H04N19/51;H04N19/61;H04N19/625;H04N19/70;H04N19/85;H04N19/91;(IPC1-7):H04N7/50 |
主分类号 |
G06T9/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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