Invention Grant
US08885970B2 Image processing apparatus, method, and medium for correcting pixel values using parameters corresponding to image spatial frequencies
有权
使用与图像空间频率对应的参数来校正像素值的图像处理装置，方法和介质
- Patent Title: Image processing apparatus, method, and medium for correcting pixel values using parameters corresponding to image spatial frequencies
- Patent Title (中): 使用与图像空间频率对应的参数来校正像素值的图像处理装置，方法和介质
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Application No.: US12763838Application Date: 2010-04-20
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Publication No.: US08885970B2Publication Date: 2014-11-11
- Inventor: Tomokazu Yanai
- Applicant: Tomokazu Yanai
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Fitzpatrick, Cella, Harper & Scinto
- Priority: JP2009-124721 20090522
- Main IPC: G06K9/40
- IPC: G06K9/40 ; H04N1/60
Abstract:
Image processing apparatus in which a spatial frequency around a pixel of interest and a statistic value of pixel values around the pixel of interest are calculated based on a pixel value of the pixel of interest and a pixel value of a pixel around the pixel of interest. Correction parameters are stored corresponding to sets of spatial frequencies and statistic values. A correction parameter is acquired corresponding to the spatial frequency around the pixel of interest and the statistic value of the pixel values around the pixel of interest, as a correction parameter for the pixel of interest. The pixel value of the pixel of interest is corrected using the correction parameter for the pixel of interest.
Public/Granted literature
- US20100296751A1 IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND STORAGE MEDIUM Public/Granted day:2010-11-25
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