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:
May. 23, 2017
Filed:
Sep. 12, 2014
Masaaki Ishikawa, Kanagawa, JP;
Yukinaka Uchiyama, Tokyo, JP;
Masaaki Ishikawa, Kanagawa, JP;
Yukinaka Uchiyama, Tokyo, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
A projection system for projecting an image onto a projection body by a plurality of projection devices, includes an image preparation unit configured to prepare a plurality of imaging images for calibration, a grid point extraction unit configured to extract a set of grid points that indicates a distortion of a projection image for at least one projection device from each of the plurality of imaging images for calibration, a grid point transformation unit configured to execute a transformation between a plurality of images that are imaged in different imaging ranges on the plurality of imaging images for calibration in such a manner that each set of the grid points that are commonly extracted for a subject projection device is provided in a common coordinate system, a grid point synthesis unit configured to produce a set of the grid points that are synthesized for a subject projection device based on a plurality of sets of the grid points in the common coordinate system, and a correction coefficient calculation unit configured to calculate a correction coefficient for a subject projection device based on a set of the synthesized grid points.