发明名称 |
PROCESSING VIDEO SIGNALS |
摘要 |
<p>A video sequence (4) is subjected to a signal compression process, in which the video sequence is divided (14) into a plurality of segments such that in each segment the number of bits required to code each frame in uncompressed form falls within a range having a predetermined magnitude, and a quantisation level is selected (17) for the encoding (19) of each segment such that the overall bit rate of the segment corresponds to a predetermined value. This value may be pre-set, or may be set in response to an input from the transmission network (3) or remote decoder (2). The quantisation level Q is determined according to a function of the number of bits per frame R, determined by analysis (10,11,12,13) of the entire sequence prior to transmission.</p> |
申请公布号 |
WO2006067373(A1) |
申请公布日期 |
2006.06.29 |
申请号 |
WO2005GB04716 |
申请日期 |
2005.12.08 |
申请人 |
BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY;KAMARIOTIS, OTHON;TURNBULL, RORY STEWART;ALVAREZ AREVALO, ROBERTO |
发明人 |
KAMARIOTIS, OTHON;TURNBULL, RORY STEWART;ALVAREZ AREVALO, ROBERTO |
分类号 |
H04N7/24;G06T9/00;H04N7/26;H04N7/46 |
主分类号 |
H04N7/24 |
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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