Invention Grant
- Patent Title: System and method for adaptive local white balance adjustment
- Patent Title (中): 用于自适应局部白平衡调整的系统和方法
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Application No.: US12099351Application Date: 2008-04-08
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Publication No.: US08013907B2Publication Date: 2011-09-06
- Inventor: Jiangtao Kuang , Weihua Xiong
- Applicant: Jiangtao Kuang , Weihua Xiong
- Applicant Address: US CA Santa Clara
- Assignee: OmniVision Technologies, Inc.
- Current Assignee: OmniVision Technologies, Inc.
- Current Assignee Address: US CA Santa Clara
- Agency: Blakely Sokoloff Taylor & Zafman LLP
- Main IPC: H04N9/73
- IPC: H04N9/73

Abstract:
The disclosure describes embodiments of an apparatus comprising an image sensor including a pixel array having a plurality of pixels and an automatic white balance (AWB) circuit coupled to the pixel array. The AWB circuit is used to determine a local white balance component for each pixel, determine a global white balance component for each pixel, and apply a white balance adjustment to each pixel, the applied white balance adjustment comprising a combination of the local white balance component and the global white balance component. The disclosure also describes embodiment of a process including receiving image data from each pixel in a pixel array, determining a local white balance component for the image data from each pixel, determining a global white balance component for the image data from each pixel, and applying a white balance adjustment to the image data from each pixel, the applied white balance adjustment comprising a combination of the local white balance component and the global white balance component. Other embodiments are also disclosed and claimed.
Public/Granted literature
- US20090251561A1 System and method for adaptive local white balance adjustment Public/Granted day:2009-10-08
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