Invention Grant
- Patent Title: Measurement system, information processing apparatus, information processing method, and medium
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Application No.: US15409415Application Date: 2017-01-18
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Publication No.: US10240982B2Publication Date: 2019-03-26
- Inventor: Takuya Shimada
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Canon U.S.A., Inc., IP Division
- Priority: JP2016-009305 20160120; JP2016-009310 20160120; JP2016-218206 20161108; JP2016-218207 20161108
- Main IPC: H04N7/18
- IPC: H04N7/18 ; G01J9/00 ; H04N5/225 ; G01N21/47 ; G01N21/57

Abstract:
A measurement apparatus includes an illumination unit configured to illuminate a measurement object with use of a plurality of point light sources configured to emit light based on illumination images modulated according to periodic functions out of phase with one another, an imaging unit configured to image the measurement object illuminated based on the illumination images, a first calculation unit configured to calculate phase information of a change in a luminance value at each of pixels based on a plurality of images captured by the imaging unit, and a first acquisition unit configured to acquire, from the phase information, a maximum reflection direction where a reflection direction is maximized on the measurement object.
Public/Granted literature
- US20170205291A1 MEASUREMENT SYSTEM, INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, AND MEDIUM Public/Granted day:2017-07-20
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