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:
Feb. 18, 2014
Filed:
Oct. 14, 2010
Image processing device using adding module for adding error diffusion value or error diffusion seed
Naoki Sumi, Hyogo, JP;
Yoshikazu Matsui, Hyogo, JP;
Satoshi Kawata, Hyogo, JP;
Masahiro Yoshiga, Hyogo, JP;
Naoki Sumi, Hyogo, JP;
Yoshikazu Matsui, Hyogo, JP;
Satoshi Kawata, Hyogo, JP;
Masahiro Yoshiga, Hyogo, JP;
Chimei Innolux Corporation, Miaoli County, TW;
Abstract
An image processing device comprises a halftoning module, a detecting module, an adding module and a generating module. The halftoning module generates an error diffusion value. The detecting module detects an edge at a current pixel of an image. The adding module adds the pixel value of the current pixel with one of the error diffusion value and an error diffusion seed according to the detecting result. The generating module generates the error diffusion seed. The error diffusion seed is generated by a formula based on the pixel value and location of the current pixel and a random number, or the error diffusion seed is generated by a formula based on the pixel value of the current pixel and a looked-up value, and the looked-up value is retrieved from a look-up table according to the location of the current pixel.