发明名称 |
Image quantisation based on image activity |
摘要 |
Video data compression apparatus comprises means for detecting image activity values indicative of image activity for regions of an input image to be compressed; means for filtering the detected image activity values to reduce the variation in image activity values between groups of adjacent regions of the image; and means for compressing the regions of the image by a degree of data compression dependent on the image activity value for each region. |
申请公布号 |
GB2342525(B) |
申请公布日期 |
2000.06.28 |
申请号 |
GB19990030387 |
申请日期 |
1995.10.30 |
申请人 |
* SONY UNITED KINGDOM LIMITED |
发明人 |
JONATHAN JAMES * STONE;CLIVE HENRY * GILLARD |
分类号 |
G06T5/20;G06T9/00;H03M7/30;H04N7/26;H04N7/30;H04N7/50;(IPC1-7):H04N7/26 |
主分类号 |
G06T5/20 |
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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