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Patent Searching and Data


Title:
IMAGE PICKUP DEVICE AND CONTROL METHOD THEREOF
Document Type and Number:
Japanese Patent JP2014023062
Kind Code:
A
Abstract:

To provide an image pickup device capable of determining exposure conditions for multiple images used in high dynamic range synthesis in a short time with high accuracy on the basis of photographed images.

A dynamic range of a scene is calculated from luminance information obtained from an image photographed at appropriate exposure suitable to a priority luminance area in high dynamic range photographing and luminance information obtained from an image photographed at overexposure or underexposure relative to the appropriate exposure. A photographing exposure width for a plurality of images necessary to produce a high dynamic range image is determined according to the calculated dynamic range.


Inventors:
NASHIZAWA HIROAKI
Application Number:
JP2012161966A
Publication Date:
February 03, 2014
Filing Date:
July 20, 2012
Export Citation:
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Assignee:
CANON KK
International Classes:
H04N5/235; G03B7/091; G03B15/00; H04N5/238; H04N101/00
Domestic Patent References:
JP2004007298A2004-01-08
JP2011024088A2011-02-03
JP2002223387A2002-08-09
JP2002247361A2002-08-30
Attorney, Agent or Firm:
Yasunori Otsuka
Shiro Takayanagi
Yasuhiro Otsuka
Shuji Kimura
Osamu Shimoyama
Nagakawa Yukimitsu