Title:
TWO-DIMENSIONAL COLOR MEASUREMENT DEVICE AND TWO-DIMENSIONAL COLOR MEASUREMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2017/038675
Kind Code:
A1
Abstract:
A first optical sensor captures an image with a two-dimensional region in an object to be measured as the measurement range thereof. A second optical sensor outputs a signal indicating the brightness of a spot region included in the two-dimensional region. A second measurement unit measures the flicker period of the object to be measured using the second optical sensor. With the reciprocal of a frame rate as a frame time, a setting unit sets the frame rate at which a value obtained by multiplying the flicker period by an integer of 1 or more is defined as the frame time when an exposure time is longer than or equal to the flicker period, and sets the frame rate at which a value obtained by dividing the flicker period by an integer greater than 1 is defined as the frame time when the exposure time is shorter than the flicker period. A first measurement unit measures a characteristic relating to the color of the two-dimensional region using the first optical sensor under the set frame rate.
Inventors:
OHMORI SHIGETO (JP)
Application Number:
PCT/JP2016/074958
Publication Date:
March 09, 2017
Filing Date:
August 26, 2016
Export Citation:
Assignee:
KONICA MINOLTA INC (JP)
International Classes:
H04N17/04; G01J3/50; G02F1/13; G09G3/36; H04N5/225; H04N5/238
Foreign References:
| JPH06201472A | 1994-07-19 | |||
| JP2003163832A | 2003-06-06 | |||
| JP2015111252A | 2015-06-18 | |||
| JP2009152919A | 2009-07-09 | |||
| JP2009077057A | 2009-04-09 | |||
| JP2006135381A | 2006-05-25 | |||
| JP2009141613A | 2009-06-25 |
Attorney, Agent or Firm:
KOTANI, Etsuji et al. (JP)
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