Adaptive gain control image processing system and method
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United States of America Patent
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Jun 24, 2014
Grant Date -
Jul 26, 2012
app pub date -
Jan 21, 2011
filing date -
Jan 21, 2011
priority date (Note) -
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Abstract
By utilizing scene metrics in an image processing system (such as night vision goggles or a camera), a setpoint controller can set a setpoint used by a gain controller. Using the setpoint and an average video level of a frame, the gain controller can set gain control signals sent to an image sensor and/or a high voltage power supply to adaptively adjust for higher and lower light scenarios. Scene metrics can include an amount of saturation in a frame, a number or percentage of pixels above a first threshold and a number or percentage of pixels below a second threshold.
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