Image analysis – Image transformation or preprocessing – Combining image portions
Patent
1994-03-31
1996-01-30
Boudreau, Leo
Image analysis
Image transformation or preprocessing
Combining image portions
382103, 382291, 382298, 348589, 348590, H04N 974
Patent
active
054886759
ABSTRACT:
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.
REFERENCES:
patent: 4393394 (1983-07-01), McCoy
patent: 4539585 (1985-09-01), Spackova et al.
patent: 5264933 (1993-11-01), Rosser et al.
patent: 5353392 (1994-10-01), Luquet et al.
Anderson David R.
Boudreau Leo
Burke William J.
David Sarnoff Research Center Inc.
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