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. 20, 2007
Filed:
Dec. 04, 2002
Ki-min Kang, Seoul, KR;
Won-kyoung Cho, Jeollabuk-do, KR;
Ki-min Kang, Seoul, KR;
Won-kyoung Cho, Jeollabuk-do, KR;
Samsung Electronics Co., Ltd., Suwon-Si, KR;
Abstract
An image brightness level conversion method and apparatus which converts a multi-valued brightness level of an input pixel to a bi-valued brightness level using a threshold value. If the input pixel is determined to belong to an edge area, a predetermined reasonable distance by which dots should be isolated is reduced by a noise component and the threshold value is produced using the reduced distance. If the input pixel is determined not to belong to the edge area, the threshold value is produced without using the noise component. The method provides a uniform distribution of dots on the 2-dimensional space, a decrease in a generation of a void region where no dots appear around the edge area, a reduction of unpleasant appearing fixed patterns between dots, and a decrease in the generation of a typical pattern in which dots with a same color are diagonally arrayed.