Title:
COLOR CORRECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/244691
Kind Code:
A1
Abstract:
A linear matrix circuit (6) generates a second R signal, a second G signal, and a second B signal by performing a matrix operation of correction coefficients of three rows and three columns composed of first to third correction coefficients, fourth to sixth correction coefficients, and seventh to ninth correction coefficients on a first R signal, a first G signal, and a first B signal that are generated by capturing an image of a subject by an imaging device. An R coefficient correction unit (13) performs correction such that, if a first difference value obtained by subtracting the first G signal from the first B signal exceeds a first threshold value, the first correction coefficient by which the first R signal is multiplied approaches one and the second and third correction coefficients by which the first G signal and the first B signal are multiplied, respectively, approach zero as the first difference value becomes larger.
Inventors:
KOBAYASHI TOSHIHIDE (JP)
IMADE ETSURO (JP)
TATEISHI MASAKAZU (JP)
IMADE ETSURO (JP)
TATEISHI MASAKAZU (JP)
Application Number:
PCT/JP2019/022907
Publication Date:
December 26, 2019
Filing Date:
June 10, 2019
Export Citation:
Assignee:
JVC KENWOOD CORP (JP)
International Classes:
H04N9/67; G06T1/00; H04N1/60; H04N9/64
Foreign References:
| JP2010171844A | 2010-08-05 | |||
| JPH07143512A | 1995-06-02 | |||
| JP2000022977A | 2000-01-21 | |||
| JP2010171844A | 2010-08-05 | |||
| JP2001359114A | 2001-12-26 | |||
| JP2018115318A | 2018-07-26 |
Other References:
See also references of EP 3809699A4
Attorney, Agent or Firm:
MIYOSHI Hidekazu et al. (JP)
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