发明名称 |
SYSTEM FOR EXTRACTING CODING PARAMETERS FROM VIDEO DATA |
摘要 |
A system extracts, from uncoded video data, coding parameters that correspond substantially to coding parameters used in a coding operation that was previously performed on the video data. The system generates a histogram for at least one AC frequency band in the uncoded video data and calculates a correlation function for the histogram. A maximum value of the correlation function is then identified, and a coding parameter for the at least one AC frequency band is determined using the maximum value of the correlation function. |
申请公布号 |
EP0985318(A2) |
申请公布日期 |
2000.03.15 |
申请号 |
EP19990900229 |
申请日期 |
1999.01.18 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
CHEN, YINGWEI;CHALLAPALI, KIRAN;BALAKRISHNAN, MAHESH |
分类号 |
H04N7/26;H04N7/30;(IPC1-7):H04N7/30 |
主分类号 |
H04N7/26 |
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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