Title:
OPTICAL GRANULAR SUBSTANCE SORTER
Document Type and Number:
WIPO Patent Application WO/2014/126232
Kind Code:
A1
Abstract:
A discrimination means is provided with: a three-dimensional color distribution data creation unit which creates data relating to respective R, G, and B wavelength components of a granular substance on a three-dimensional color space; a Mahalanobis distance boundary surface creation unit which separates a non-defective cluster region and a defective cluster region; a Euclidean distance boundary surface creation unit which finds the positions of the respective centers of gravity of the non-defective cluster region and the defective cluster region, and sets a boundary surface at which the distance between the positions of the respective centers of gravity is largest; a two-dimensional data conversion unit which converts the data into two-dimensional color distribution data by a line of intersection of the boundary surfaces; and a threshold value setting unit which creates a closed region by fitting an inertia-equivalent ellipsoid into the defective cluster region on the two-dimensional color distribution data, and sets a threshold value within the closed region.
Inventors:
ISHIZU HIDEAKI (JP)
MIYAMOTO TOMOYUKI (JP)
HARA MASAZUMI (JP)
MIYAMOTO TOMOYUKI (JP)
HARA MASAZUMI (JP)
Application Number:
PCT/JP2014/053593
Publication Date:
August 21, 2014
Filing Date:
February 17, 2014
Export Citation:
Assignee:
SATAKE ENG CO LTD (JP)
International Classes:
G01N21/85; B07C5/342; G01N21/27
Domestic Patent References:
WO2013145873A1 | 2013-10-03 |
Foreign References:
JP2009119410A | 2009-06-04 | |||
JP2005230703A | 2005-09-02 | |||
JP2007006142A | 2007-01-11 | |||
JP2004178050A | 2004-06-24 | |||
JPH0461558A | 1992-02-27 | |||
JP2011007553A | 2011-01-13 | |||
JP2005074412A | 2005-03-24 |
Other References:
See also references of EP 3001185A4
Attorney, Agent or Firm:
AIWA INTERNATIONAL PATENT AGENCY (JP)
It suits and is わ特許業務法人. (JP)
It suits and is わ特許業務法人. (JP)
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