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Title:
IMAGE PROCESSING APPARATUS
Document Type and Number:
Japanese Patent JP2010141454
Kind Code:
A
Abstract:

To provide an image processing apparatus capable of quickly and exactly controlling the gain of image data captured repeatedly.

Raw image data output from a pre-processing circuit 20 is written in a raw image area 32a at an SDRAM 32 by a data write-in circuit 30w. The image data stored in the raw image area 32a is read by a data read-out circuit 30r. A post-processing circuit 34 applies processing to the image data read by the data read-out circuit 30r. Wherein, the processing contains gain control which refers to a gain factor. A CPU 26 refers to an intensity distribution of raw image data interested by the data write-in circuit 30w, and specifies a percentage of pixels belonging to a default low intensity range in the raw image data interested by the data write-in circuit 30w. Moreover, the CPU 26 adjusts the capacity of a gain factor corresponding to the pixels belonging to the default low intensity range among gain factors referred for gain control, with reference to the percentage specified in the above way. As the result, the gain of the image data can be quickly and exactly controlled.

COPYRIGHT: (C)2010,JPO&INPIT


Inventors:
SASAKI TAKESHI
Application Number:
JP2008313890A
Publication Date:
June 24, 2010
Filing Date:
December 10, 2008
Export Citation:
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Assignee:
SANYO ELECTRIC CO
International Classes:
H04N5/243; G06T5/00; H04N1/407; H04N5/235
Domestic Patent References:
JP2001189862A2001-07-10
JP2006050014A2006-02-16
JP2003158673A2003-05-30
Foreign References:
WO2006137216A12006-12-28
Attorney, Agent or Firm:
境 正寿



 
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