Invention Application
- Patent Title: IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD
- Patent Title (中): 图像处理装置和图像处理方法
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Application No.: US12955703Application Date: 2010-11-29
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Publication No.: US20110128435A1Publication Date: 2011-06-02
- Inventor: Takeshi Ikeda
- Applicant: Takeshi Ikeda
- Applicant Address: JP Tokyo
- Assignee: CANON KABUSHIKI KAISHA
- Current Assignee: CANON KABUSHIKI KAISHA
- Current Assignee Address: JP Tokyo
- Priority: JP2009-273890 20091201
- Main IPC: H04N5/235
- IPC: H04N5/235

Abstract:
An image processing apparatus includes a distribution detection unit configured to detect whether a luminance distribution on the screen changes to a hill-shaped form, based on a result of adding photometric values of each of divided photometry areas by rows and by columns, a difference calculation unit configured to calculate a luminance value difference between one portion of the screen and the peripheral portion thereof, a ratio calculating unit configured to calculate a ratio of pixels having a luminance value higher than or equal to a threshold value in the one portion, and a spotlight determination unit configured to determine whether a scene of the captured image is a spotlight scene according to a detection result of the distribution detection unit, calculation result of the difference calculation unit, and a calculation result of the ratio calculation unit.
Public/Granted literature
- US08345151B2 Image processing apparatus and image processing method Public/Granted day:2013-01-01
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