发明名称 |
A METHOD FOR SPECIFYING A VIDEO WINDOW'S BOUNDARY COORDINATES TO PARTITION A VIDEO SIGNAL AND COMPRESS ITS COMPONENTS |
摘要 |
A method for specifying a video window's boundary coordinates (98) directly from a multi-color video signal (20) to separate the signals high (32) and low (35) variance components. The method converts the analog multi-color video signal into respective color sequences of digital frames (30) and transforms them into another sequence of digital frames (49) that represent the intensity of the multi-color video signal. The method generates difference frames (51) between successive transformed intensity frames and computes a row activity measure (81) and a column activity measure (82) from at least one of the difference frames. The video window's approximate boundary coordinates are determined from said row and column activity measures. |
申请公布号 |
WO9533337(A1) |
申请公布日期 |
1995.12.07 |
申请号 |
WO1995US06647 |
申请日期 |
1995.05.18 |
申请人 |
HUGHES AIRCRAFT COMPANY |
发明人 |
YANG, CHAO-KUNG;WILLIAMS, JIM, C.;KRUTSICK, STANLEY |
分类号 |
H04N5/92;G06F3/14;G06T7/20;G09G5/14;H04N7/26;H04N11/20;(IPC1-7):H04N5/926;H04N5/765 |
主分类号 |
H04N5/92 |
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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