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:
Jun. 01, 2021
Filed:
Jun. 17, 2019
Canon Kabushiki Kaisha, Tokyo, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
An image processing apparatus that determines a correction parameter for correcting distortion or a position of an image projected on a screen by a projection unit, the apparatus comprises a holding unit which holds a reference pattern constituted by a background region and a plurality of significant pixels scattered in the background region and having a pixel value different from a pixel value of the background region, a generating unit which generates a pattern image to be projected by changing a value of a pixel near the significant pixel in the reference pattern, an acquisition unit which acquires a captured image obtained by an image capturing unit by capturing the pattern image generated by the generating unit so as to include a projection image projected by the projection unit, and a determining unit which determines the correction parameter from the captured image.