| 发明名称 |
ANALYSE VON DEKOMPRIMIERTEN VIDEOBILDFOLGEN |
| 摘要 |
A method of detecting I-frames in a video signal which has previously been MPEG coded, involves taking a DCT and analyzing the frequency of zero value coefficients. An I-frame, which does not utilize prediction coding is expected to have a higher number of zero coefficients than a predicted P- or B-frame. |
| 申请公布号 |
AT235787(T) |
申请公布日期 |
2003.04.15 |
| 申请号 |
AT19990947776T |
申请日期 |
1999.10.11 |
| 申请人 |
SNELL & WILCOX LIMITED |
发明人 |
KNEE, MICHAEL, JAMES;POOLE, IAN, JAMES |
| 分类号 |
H04N7/32;G06T9/00;H03M7/30;H04N7/26;H04N7/50;H04N17/00;(IPC1-7):H04N7/26 |
主分类号 |
H04N7/32 |
| 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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