发明名称 |
Video signal coding method and device adapted to control code amounts according to the characteristics of pictures |
摘要 |
A video signal coding device is provided with unit dividing means (202) for dividing an input picture into units each of which is a coding quantity control unit consisting of one or a plurality of frames to be processed by any one of intra-frame coding, inter-frame forward coding, and inter-frame bi-directional coding; activity calculating means (203) for calculating a frame activity for every frame of the input picture, and calculating a unit activity for every unit from the frame activities of frames belonging to the same unit; target coding quantity deciding means (205) for deciding a target coding quantity of a coding frame on the basis of the fame activity of the coding frame which is a coding object, the unit activity of a coding unit to which the coding unit belongs, and the average unit activity of a unit prior to the coding unit; and coding means (206) for coding the coding frame by the target coding quantity so as to generate coded data.
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申请公布号 |
US6553068(B1) |
申请公布日期 |
2003.04.22 |
申请号 |
US19980180447 |
申请日期 |
1998.11.05 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
WAKE KAZUHIRO;NISHINO MASAKAZU;FUJIWARA YUJI;TAKEUCHI SEIICHI |
分类号 |
H04N7/36;H04N7/50;(IPC1-7):H04N7/12 |
主分类号 |
H04N7/36 |
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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