Invention Grant
- Patent Title: Chromatic aberration correction
- Patent Title (中): 色差校正
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Application No.: US11755357Application Date: 2007-05-30
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Publication No.: US07792357B2Publication Date: 2010-09-07
- Inventor: Sing Bing Kang
- Applicant: Sing Bing Kang
- Applicant Address: US WA Redmond
- Assignee: Microsoft Corporation
- Current Assignee: Microsoft Corporation
- Current Assignee Address: US WA Redmond
- Agency: Lyon & Harr, LLP
- Agent Richard T. Lyon
- Main IPC: G06K9/00
- IPC: G06K9/00

Abstract:
A chromatic aberration (CA) correction technique is presented that substantially removes CA from an image captured by a digital camera. In general, the effects of any in-camera sharpening are reversed by applying a blurring kernel. The image is then super-sampled to approximate its state prior to the application of in-camera sampling. One of the color channels is designated as a reference channel, and an objective function is established for each of the non-reference channels. The reference color channel is assumed to be CA-free, while the objective functions are used to compute the unknown CA parameters for each non-reference channel. These sets are used in a CA removal function to substantially remove the CA associated with each of the non-reference channels. The image is then sampled to return it to its original resolution, and a sharpening filter is applied if needed to undo the effects of the previously applied blurring kernel.
Public/Granted literature
- US20080298678A1 CHROMATIC ABERRATION CORRECTION Public/Granted day:2008-12-04
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