发明名称 |
Digital video signal inter-block interpolative predictive encoding/decoding apparatus and method providing high efficiency of encoding |
摘要 |
An image encoding apparatus for application to images expressed as respective frames of a digital video signal, whereby an image is converted into an array of blocks with specific blocks predetermined as being independent internally encoded blocks and the remainder as predictively encoded blocks, with predicted pixel signal values for a predictively encoded block being derived by interpolation from pixel signal values of at least one pair of blocks which have been already encoded and enclose that predictively encoded block along the row or column directions or both the row and column directions. Encoding efficiency is enhanced by applying Discrete Sine Transform processing along the interpolation direction, when encoding an array of prediction error signal values derived for a block, and by executing adaptive prediction by determining an optimum interpolation direction, when there are two possible directions for deriving predicted pixel signal values for a block.
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申请公布号 |
US6157676(A) |
申请公布日期 |
2000.12.05 |
申请号 |
US19980127122 |
申请日期 |
1998.07.30 |
申请人 |
VICTOR COMPANY OF JAPAN |
发明人 |
TAKAOKA, KATSUMI;SUGIYAMA, KENJI |
分类号 |
G06T9/00;H04N7/34;(IPC1-7):H04B1/66 |
主分类号 |
G06T9/00 |
代理机构 |
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