Invention Grant
US08982238B2 Multi-target automatic exposure and gain control based on pixel intensity distribution
有权
基于像素强度分布的多目标自动曝光和增益控制
- Patent Title: Multi-target automatic exposure and gain control based on pixel intensity distribution
- Patent Title (中): 基于像素强度分布的多目标自动曝光和增益控制
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Application No.: US13933674Application Date: 2013-07-02
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Publication No.: US08982238B2Publication Date: 2015-03-17
- Inventor: Chengming Liu , Jizhang Shan , Donghui Wu
- Applicant: OmniVision Technologies, Inc.
- 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: H04N5/235
- IPC: H04N5/235 ; H04N5/217 ; H04N5/228

Abstract:
An example method of multi-target automatic exposure and gain control based on pixel intensity distribution includes capturing a series of digital images with an image sensor. As the series of digital images are captured, exposure time and/or gain are adjusted to adjust a mean intensity value of the digital images until a target mean intensity value is reached. The method includes dynamically selecting the target mean intensity value from a plurality of target mean intensity values based on a relative number of pixels, in each captured digital image, that have an intensity value that falls outside a range of intensity values.
Public/Granted literature
- US20150009361A1 MULTI-TARGET AUTOMATIC EXPOSURE AND GAIN CONTROL BASED ON PIXEL INTENSITY DISTRIBUTION Public/Granted day:2015-01-08
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