Invention Grant
- Patent Title: Image processing apparatus, image processing method, and storage medium for performing correction for a target pixel having high luminance in an image
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Application No.: US15693069Application Date: 2017-08-31
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Publication No.: US10440339B2Publication Date: 2019-10-08
- Inventor: Kotaro Kitajima
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: CANON KABUSHIKI KAISHA
- Current Assignee: CANON KABUSHIKI KAISHA
- Current Assignee Address: JP Tokyo
- Agency: Canon USA, Inc., IP Docketing
- Priority: JP2016-176563 20160909
- Main IPC: H04N5/235
- IPC: H04N5/235 ; H04N9/64 ; G06T5/00 ; G06T7/90 ; G06T5/20 ; H04N9/04 ; G06T5/50 ; H04N9/73 ; G06K9/00 ; H04N9/68 ; H04N9/77

Abstract:
A reflection correction processing unit extracts at least color information from a peripheral area of a processing target pixel having a high luminance in an input image, and performs control, to the processing target pixel, to reduce the luminance of the processing target pixel and to bring a chrominance signal of the processing target pixel close to a predetermined chrominance signal ratio. In a case where a chrominance signal ratio based on the color information is close to the predetermined chrominance signal ratio, the reflection correction processing unit increases an intensity of the correction to the processing target pixel.
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