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Title:
映像処理装置、映像処理方法、撮像装置、プログラムおよび記憶媒体
Document Type and Number:
Japanese Patent JP5782546
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To more precisely determine a night scene even in photographing of the bright or dark night scene when a backlight scene and a subject of high contrast are photographed.SOLUTION: An imaging apparatus includes a histogram shape determination device which acquires a histogram of a luminance value from video photographed by a photographing section and determines whether the video is obtained by photographing a night scene from a shape of the histogram. The imaging apparatus includes a point light source determination device which acquires a maximum value of contrast for each horizontal line of the video as a line evaluation value and determines whether the video is obtained by photographing the night scene or not in response to whether the line evaluation value has a characteristic where the point light source is set to be a subject. The imaging apparatus determines that the scene photographed by the photographing section is obtained by photographing the night scene when the histogram shape determination device and the point light source determination device determine that the scene is the night scene.

Inventors:
Satoshi Nakayama
Application Number:
JP2014078975A
Publication Date:
September 24, 2015
Filing Date:
April 07, 2014
Export Citation:
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Assignee:
Canon Inc
International Classes:
H04N5/232; G02B7/36; G03B7/00; G03B7/28; G03B13/36
Domestic Patent References:
JP2008141635A
JP2001075141A
Attorney, Agent or Firm:
Yasunori Otsuka
Shiro Takayanagi
Yasuhiro Otsuka
Shuji Kimura
Osamu Shimoyama
Nagakawa Yukimitsu