Invention Grant
- Patent Title: Lens shading correction for autofocus and zoom lenses
- Patent Title (中): 自动对焦和变焦镜头的镜头阴影校正
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Application No.: US12496687Application Date: 2009-07-02
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Publication No.: US08223229B2Publication Date: 2012-07-17
- Inventor: Hugh Phu Nguyen
- Applicant: Hugh Phu Nguyen
- Applicant Address: US CA Santa Clara
- Assignee: Nethra Imaging Inc
- Current Assignee: Nethra Imaging Inc
- Current Assignee Address: US CA Santa Clara
- Agency: Hahn Moodley LLP
- Agent Vani Moodley, Esq.
- Main IPC: H04N9/64
- IPC: H04N9/64 ; H04N5/235 ; H04N5/217

Abstract:
In one embodiment of the invention, there is provided a method of correcting a captured image for lens shading artifacts, the captured image being captured by an image capture system, the method comprising: determining a function L(x, y) being a lens shading correction function to be applied to images captured by a lens of the image capture system in order to correct for lens shading artifacts; if a focal length associated with the captured image is less than a focal length associated with, the function L(x, y) then cropping the function L(x, y) based on the focal length associated with the captured image; and scaling the cropped function L(x, y) to a size of the tin-cropped Junction L(x, y).
Public/Granted literature
- US20110001854A1 LENS SHADING CORRECTION FOR AUTOFOCUS AND ZOOM LENSES Public/Granted day:2011-01-06
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