Invention Application
- Patent Title: Intensity Separated Local White Balance Correction
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Application No.: US17110139Application Date: 2020-12-02
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Publication No.: US20220174249A1Publication Date: 2022-06-02
- Inventor: Gang Hua , Shashank Dabral , Mihir Narendra Mody , Rajasekhar Reddy Allu , Niraj Nandan
- Applicant: Texas Instruments Incorporated
- Applicant Address: US TX Dallas
- Assignee: Texas Instruments Incorporated
- Current Assignee: Texas Instruments Incorporated
- Current Assignee Address: US TX Dallas
- Main IPC: H04N9/73
- IPC: H04N9/73 ; H04N5/243 ; H04N9/78 ; H04N5/235

Abstract:
A method for local automatic white balance (AWB) of wide dynamic range (WDR) images is provided that includes collecting statistics for local AWB by an image signal processor (ISP) from a first WDR image generated by the ISP, receiving, by the ISP, a plurality of local gain lookup tables (LUTs), one for each color channel, wherein the plurality of local gain LUTs is generated using the statistics, and applying, by the ISP, a gain value to each pixel in a second WDR image generated by the ISP, wherein the gain value for the pixel is determined by the ISP using the local gain LUT for the color channel of the pixel.
Public/Granted literature
- US11653105B2 Intensity separated local white balance correction Public/Granted day:2023-05-16
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