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US 11,451,713 B2Granted
Autogaining of color pattern filtered sensors to ensure color fidelity
AssigneeRockwell Collins, Inc.
InventorsWeston J. Lahr, Julian C. Ryde, Richard M. Rademaker, Richard Jinkins
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Abstract
A system and method are provided for automatically adjusting exposure to maintain color fidelity where a point source puts a small cluster of pixels in saturation. An exposure level is iteratively reduced until pixels corresponding only one color in a Bayer filter remain above a threshold while all other colors are at or below the threshold. The cluster of pixels is isolated for analysis such that only neighboring pixels are considered while reducing the exposure.
Claims15
A computer apparatus comprising:
- a photosensor array;
- a Bayer filter disposed on the photosensor array;
- and
- at least one processor in data communication with a memory storing processor executable code for configuring the at least one processor to:
- receive one or more signals from the photosensor array;
- identify a plurality of pixels in the photosensor array corresponding to a point source, the plurality of pixels comprising at least two color channels;
- identify at least one first pixel in the photosensor array in saturation, the at least one first pixel being in a first color channel;
- and
- adjust an exposure until all pixels in the plurality of pixels outside the first color channel fall below a predefined threshold.
6 more elements
A method comprising:
- receiving one or more signals from a photosensor array;
- identifying a plurality of pixels in the photosensor array corresponding to a point source, the plurality of pixels comprising at least two color channels;
- identifying at least one first pixel in the photosensor array in saturation, the at least one first pixel being in a first color channel;
- and
- adjusting an exposure until all pixels in the plurality of pixels outside the first color channel fall below a predefined threshold.
2 more elements
Dependencies are inferred from the claim text.