Invention Grant
- Patent Title: Methods and apparatuses for double sided dark reference pixel row-wise dark level non-uniformity compensation in image signals
- Patent Title (中): 图像信号中双面暗参考像素行方向暗电平不均匀补偿的方法和装置
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Application No.: US12004035Application Date: 2007-12-20
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Publication No.: US07924330B2Publication Date: 2011-04-12
- Inventor: Chen Xu , Yaowu Mo , Mei Yan
- Applicant: Chen Xu , Yaowu Mo , Mei Yan
- Applicant Address: KY George Town
- Assignee: Aptina Imaging Corporation
- Current Assignee: Aptina Imaging Corporation
- Current Assignee Address: KY George Town
- Main IPC: H04N9/64
- IPC: H04N9/64
Abstract:
Methods and apparatuses for row-wise dark level non-uniformity compensation of imaging sensor pixel signals. A column dependent dark reference value is determined as one of a linear and parabolic function of signal values from two areas of dark reference pixels and a column location and then used for dark level non-uniformity compensation of signal values from imaging pixels.
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