The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 22, 2017
Filed:
Mar. 13, 2014
Ricoh Company, Ltd., Tokyo, JP;
Takayuki Hara, Kanagawa, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
A calibration device includes a part for controlling a projection device to project a pattern onto a three-dimensional object having characteristic points, a part for controlling an imaging device to acquire images wherein the three-dimensional object with the pattern projected thereon is imaged from imaging directions, a part for estimating a relative position and attitude of the imaging device with respect to the three-dimensional object based on positions of the characteristic points of the three-dimensional object on the images, a part for estimating reflection positions of projection light rays corresponding to characteristic points of the pattern on the three-dimensional object based on positions of the characteristic points of the pattern and the relative position and attitude of the imaging device, for each image, and a part for identifying positions and directions of the projection light rays corresponding to the characteristic points of the pattern based on the reflection positions.