Invention Grant
- Patent Title: Green non-uniformity correction
- Patent Title (中): 绿色不均匀校正
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Application No.: US13889937Application Date: 2013-05-08
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Publication No.: US09113118B2Publication Date: 2015-08-18
- Inventor: D. Amnon Silverstein , Suk Hwan Lim , Sheng Lin , Guy Côté
- Applicant: APPLE INC.
- Applicant Address: US CA Cupertino
- Assignee: APPLE INC.
- Current Assignee: APPLE INC.
- Current Assignee Address: US CA Cupertino
- Agency: Fletcher Yoder PC
- Main IPC: G06K9/00
- IPC: G06K9/00 ; H04N9/73 ; H04N5/14 ; H04N9/04

Abstract:
Systems and methods for correcting green channel non-uniformity (GNU) are provided. In one example, GNU may be corrected using energies between the two green channels (Gb and Gr) during green interpolation processes for red and green pixels. Accordingly, the processes may be efficiently employed through implementation using demosaic logic hardware. In addition, the green values may be corrected based on low-pass-filtered values of the green pixels (Gb and Gr). Additionally, green post-processing may provide some defective pixel correction on interpolated greens by correcting artifacts generated through enhancement algorithms.
Public/Granted literature
- US20130321676A1 Green Non-Uniformity Correction Public/Granted day:2013-12-05
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