Backlight compensation using threshold detection

Photography – Exposure control circuit – Having plural photocells

Reexamination Certificate

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C348S362000, C396S222000

Reexamination Certificate

active

07398016

ABSTRACT:
A method and circuit for excluding regions from an exposure calculation is described. The method includes obtaining pre-image data representing an image of a scene and dividing the image into a plurality of regions. Regions that contain a predetermined number of bright pixels are identified, bright pixels being pixels that are brighter than a threshold level of brightness. Each region that has at least the predetermined number of bright pixels from the exposure calculation are excluded.

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