发明名称 |
Stabilizing estimate of location of target region inferred from tracked multiple landmark regions of a video image |
摘要 |
Any of multiple landmark regions of a scene being viewed by an image sensor are used for interring the location of a target region of the scene in which a pattern is to be inserted in order to avoid the problem of the view of a region being occluded. Because of changes, such as the pointing angle of the sensor, there is a slight difference in size and position in the location of a target region inferred from one landmark region and from another landmark region. this results in a jitter when a first landmark region being used for inferring the location of a target region is replaced by a second landmark region in response to the first landmark region being occluded. This jitter is eliminated by deriving an error-correcting component that compensates for the aforesaid slight difference in size and position in the location of a target region inferred from different landmark regions.
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申请公布号 |
US5488675(A) |
申请公布日期 |
1996.01.30 |
申请号 |
US19940222207 |
申请日期 |
1994.03.31 |
申请人 |
DAVID SARNOFF RESEARCH CENTER, INC. |
发明人 |
HANNA, KEITH J. |
分类号 |
H04N5/262;G09G5/00;G09G5/377;G09G5/38;H04N5/272;(IPC1-7):H04N9/74 |
主分类号 |
H04N5/262 |
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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