Invention Grant
- Patent Title: Image processing apparatus and control method therefor
- Patent Title (中): 图像处理装置及其控制方法
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Application No.: US13804966Application Date: 2013-03-14
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Publication No.: US09589339B2Publication Date: 2017-03-07
- Inventor: Takahiro Abe
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: CANON KABUSHIKI KAISHA
- Current Assignee: CANON KABUSHIKI KAISHA
- Current Assignee Address: JP Tokyo
- Agency: Carter, DeLuca, Farrell & Schmidt, LLP
- Priority: JP2012-085889 20120404
- Main IPC: G06T7/00
- IPC: G06T7/00 ; G06T7/20 ; H04N5/232 ; H04N5/235
Abstract:
An image captured with flash light and an image captured without flash light are each divided into a plurality of regions, and a luminance value is calculated for each region. Based on a ratio of a difference between the luminance value of each region in the image captured with flash light and the luminance value of the corresponding region in the image captured without flash light to the luminance value of the corresponding region in the image captured without flash light, a degree of influence of light representing the influence of light emitted by the light emitting device on the luminance value of each region in the image captured with flash light is calculated. Regions in which the degrees of influence of light are larger than a predetermined threshold are determined as illuminated regions.
Public/Granted literature
- US20130265412A1 IMAGE PROCESSING APPARATUS AND CONTROL METHOD THEREFOR Public/Granted day:2013-10-10
Information query
