Invention Grant
US08767098B2 Method and apparatus for reducing noise in analog image data of a CMOS image sensor
有权
用于降低CMOS图像传感器的模拟图像数据中的噪声的方法和装置
- Patent Title: Method and apparatus for reducing noise in analog image data of a CMOS image sensor
- Patent Title (中): 用于降低CMOS图像传感器的模拟图像数据中的噪声的方法和装置
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Application No.: US13599760Application Date: 2012-08-30
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Publication No.: US08767098B2Publication Date: 2014-07-01
- Inventor: Johannes Solhusvik
- Applicant: Johannes Solhusvik
- 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: H04N9/64
- IPC: H04N9/64
Abstract:
A method for preprocessing analog image data to reduce noise in the analog image data that is readout from a pixel array of an image sensor during a sampling time is disclosed. The method includes generating multiple samples of the analog image data during the sampling time and then limiting values of the multiple samples to an upper and lower threshold. The method also includes pre-conditioning the multiple samples by applying a weighting factor to each of the multiple samples in response to when a respective sample was generated during the sampling time. A median value of the multiple samples is then determined and outputted.
Public/Granted literature
- US20140063301A1 METHOD AND APPARATUS FOR REDUCING NOISE IN ANALOG IMAGE DATA OF A CMOS IMAGE SENSOR Public/Granted day:2014-03-06
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