Image processing apparatus and image forming apparatus configured to calculate a misregistration amount
US8498021B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2009 |
| Grant date | Jul 30, 2013 |
| Priority date | — |
| Expiry date | May 28, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K15/027
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An image processing apparatus includes: a controller that causes an image forming unit to form an image so that a plurality of unit images are arranged in a first direction with a constant distance between adjacent unit images; an acquisition unit that acquires read image data indicating a position and a grey level value of each pixel constituting the image formed under control of the controller; and a calculation unit that calculates a misregistration with respect to the first direction of the image formed by the image forming unit, based on a convolution operation performed on the read image data acquired by the acquisition unit, the convolution operation using a reference periodic function whose variable is a position in the first direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.