Invention Grant
- Patent Title: Coloring inspection apparatus and coloring inspection method
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Application No.: US14900170Application Date: 2015-01-14
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Publication No.: US09984307B2Publication Date: 2018-05-29
- Inventor: Makoto Kato
- Applicant: PAPALAB CO., LTD.
- Applicant Address: JP Hamamatsu-shi, Shizuoka
- Assignee: PAPALAB CO, LTD.
- Current Assignee: PAPALAB CO, LTD.
- Current Assignee Address: JP Hamamatsu-shi, Shizuoka
- Agency: Matthias Scholl, PC
- Agent Matthias Scholl
- Priority: JP2014-004680 20140114
- International Application: PCT/JP2015/000141 WO 20150114
- International Announcement: WO2015/107889 WO 20150723
- Main IPC: G06K9/46
- IPC: G06K9/46 ; G01J3/46 ; G06K9/62 ; G06T7/90 ; G06T7/00 ; H04N5/232 ; H04N5/225 ; G01J3/50 ; G01J3/02 ; G01J3/28

Abstract:
An object is to ensure clear and easy quantification of the textures such as metallic texture and shiny texture of pearl pigment and to rationalize comparison inspection between an inspection object and a reference object. A coloring inspection apparatus 1 includes a camera 2 that is configured to have three spectral sensitivities (S1(λ), S2(λ), S3(λ)) linearly and equivalently converted to a CIE XYZ color matching function, an arithmetic processing unit 3 that is configured to obtain and compute coloring data by conversion of an image which has three spectral sensitivities and is obtained by the camera 2 into tristimulus values X, Y and Z in a CIE XYZ color system, and lighting units 6 that are configured to illuminate an automobile 5 as an example of measuring object. The coloring inspection apparatus 1 computes a color distribution consistency index that represents a ratio of overlap of two xyz chromaticity histogram distributions of an inspection object Q and a reference object R, so as to inspect color.
Public/Granted literature
- US20160140734A1 COLORING INSPECTION APPARATUS AND COLORING INSPECTION METHOD Public/Granted day:2016-05-19
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