Color enhancement method

Details Color enhancement method Color enhancement method

H - Electricity

04

N

H04N 5/235 (2006.01) A01M 21/00 (2006.01) H04N 5/243 (2006.01)

Patent

CA 2505883

A method and system for processing a video image is provided. A video camera system in the context of non-uniform lighting includes a module for developing a shutter speed control signal, analog gain control signal and color balance signals from pixel luminance over one filed of video. The control signals are used to control the camera during the next field. During one field, the speed control signal and the analog gain signal target dark areas of the image. During the next field, they target the bright areas of the image. Every pixel is within a workable range of luminance in at least one of two alternate fields. As the color balance settings are adjusted according to the exposure settings and the luminance level, consistent hue values are maintained between alternate fields. A pixel color detection circuit examines each pixel based on a color offset signal to determine whether it is in a color region of interest.

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