Invention Grant
- Patent Title: Image sensor compensation
- Patent Title (中): 图像传感器补偿
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Application No.: US13029076Application Date: 2011-02-16
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Publication No.: US08547447B2Publication Date: 2013-10-01
- Inventor: Francisco Imai
- Applicant: Francisco Imai
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Fitzpatrick, Cella, Harper & Scinto
- Main IPC: H04N5/228
- IPC: H04N5/228

Abstract:
Compensation is performed for an image capture device which includes an image sensor which has a tunable spectral response and which is tunable in accordance with a capture mask. The compensation is for spatial non-uniformity in color sensitivity of the image sensor. A default capture mask is applied to the image sensor, and a sample image is captured using the image sensor tuned by the default capture mask. Color of the sample image is analyzed to identify spatial non-uniformity in color sensitivity of the image sensor. A compensation capture mask is constructed. The compensation capture mask is constructed using calculations based on the identified spatial non-uniformity so as to compensate for spatial non-uniformity in color sensitivity of the image sensor. The compensation capture mask is stored in a memory of the image capture device for application of the compensation capture mask to the image sensor.
Public/Granted literature
- US20120206631A1 IMAGE SENSOR COMPENSATION Public/Granted day:2012-08-16
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