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:
Apr. 14, 2020
Filed:
Jul. 01, 2019
Canon Kabushiki Kaisha, Tokyo, JP;
Hirotaka Omori, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image processing apparatus includes a noise level calculation circuit, an inter-frame change amount calculation circuit, a recursive coefficient calculation circuit, and a composite processing circuit. The noise level calculation circuit detects a noise level of a signal of a focused frame in moving images. The inter-frame change amount calculation circuit detects the amount of change between the focused frame and the previous frame by using the noise level of the focused frame, the signal of the focused frame, and a signal of the previous frame after a noise reduction process. The recursive coefficient calculation circuit sets a coefficient for use in the noise reduction process according to the amount of change. The composite processing circuit performs the noise reduction process on the signal of the focused frame by using the signal of the focused frame, the signal of the previous frame after the noise reduction process, and the coefficient.