Invention Grant
- Patent Title: System and method for providing multi resolution purple fringing detection and correction
- Patent Title (中): 提供多分辨率紫外线检测和校正的系统和方法
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Application No.: US13206788Application Date: 2011-08-10
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Publication No.: US08553978B2Publication Date: 2013-10-08
- Inventor: Yochay Tzur , Dudi Vakrat
- Applicant: Yochay Tzur , Dudi Vakrat
- Applicant Address: US CA Sunnyvale
- Assignee: CSR Technology Inc.
- Current Assignee: CSR Technology Inc.
- Current Assignee Address: US CA Sunnyvale
- Agency: Frommer Lawrence & Haug LLP
- Agent John W. Branch
- Main IPC: G06K9/00
- IPC: G06K9/00 ; G06K9/34

Abstract:
A system, method, and computer program product for automatically detecting and correcting the “purple fringing” effect, typically due to axial chromatic aberration in imaging devices, are disclosed and claimed. A chromaticity score is computed, denoting the amount of false color related to a purple fringing artifact. A locality score is computed, denoting the similarity of the purple fringing region to a shape of a narrow ridge, which is typical for purple fringing artifacts. A saturation score is also computed, denoting the proximity of a pixel to saturated pixels. These scores are then combined into a detection score, denoting pixels having strong indications they share properties common to pixels of purple fringing artifacts. The detected pixels are then correspondingly corrected, e.g. by chroma suppression. The scoring and correction may be performed over combinations of image resolutions, e.g. an original version and potentially numerous downscaled versions.
Public/Granted literature
- US20120106841A1 SYSTEM AND METHOD FOR PROVIDING MULTI RESOLUTION PURPLE FRINGING DETECTION AND CORRECTION Public/Granted day:2012-05-03
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