Image analysis – Image enhancement or restoration – Intensity – brightness – contrast – or shading correction
Reexamination Certificate
2011-03-15
2011-03-15
Bali, Vikkram (Department: 2624)
Image analysis
Image enhancement or restoration
Intensity, brightness, contrast, or shading correction
C353S030000
Reexamination Certificate
active
07907790
ABSTRACT:
An image correcting apparatus is used in a projection system which includes a plurality of projectors installed away from each other. Respective projection images projected by the plural projectors are stacked on a projection surface. The image correcting apparatus includes a reference image pickup device to output a reference image, a plurality of detection image pickup devices to output a detection image, and a correction control device which controls operations of the reference image pickup device and the plural detection image pickup devices. The correction control device includes a plurality of shadow area judging units which judges a shadow area generated on a projection image based on a detection image and a reference image, and a plurality of shadow correction parameter producing units which gives weights to the shadow area and the non-shadow area to produce shadow correction parameter containing luminance correction weight information.
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Bali Vikkram
Entezari Michelle
Oliff & Berridg,e PLC
Seiko Epson Corporation
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