Title:
画像補正方法及び画像補正装置
Document Type and Number:
Japanese Patent JP6771134
Kind Code:
B2
Abstract:
An image correction method and an image correction apparatus when the image correction method includes: an identifying step of identifying each pixel in an image as a foreground pixel or a background pixel; a background filling step of estimating brightness of a background corresponding to a foreground pixel based on brightness and gradient of the brightness of background pixels adjacent to the foreground pixel to fill the background located in a position of the foreground pixel, to obtain a background illumination map of the image according to filled backgrounds along with background pixels; and a correcting step of correcting the image based on the brightness of each pixel in the image and the background illumination map. A non-uniform illumination image can be corrected effectively.
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Inventors:
Ziao Jile
Fanu Way
Sun Son
Fanu Way
Sun Son
Application Number:
JP2016209871A
Publication Date:
October 21, 2020
Filing Date:
October 26, 2016
Export Citation:
Assignee:
Pfu corporation
International Classes:
H04N1/407; G06T5/00
Domestic Patent References:
| JP2001136438A | ||||
| JP2015153424A | ||||
| JP2003179737A |
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Tadahiko Ito