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. 13, 2010
Filed:
May. 29, 2006
Chih-kuang Chang, Tu-Cheng, TW;
Xiao-chao Sun, Shenzhen, CN;
LI Jiang, Shenzhen, CN;
Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Shenzhen, Guangdong Province, CN;
Hon Hai Precision Industry Co., Ltd., Tu-Cheng, Taipei Hsien, TW;
Abstract
A method for filtering image noise includes the steps of: acquiring an image; converting gray-scale values of the image and sharpening the image; defining axes perpendicular to image borders and selecting intersecting points between the axes and the image border; creating an object points set and inputting all the intersecting points into the object points set; fitting a geometric character according to the object points set; defining a tolerance threshold value; selecting an intersecting point from the object points set; calculating a distance from the selected intersecting point to the geometric character; determining whether the distance is larger than the defined tolerance threshold value; marking the selected intersecting point as a noise if the distance is larger than the defined tolerance threshold value; and deleting the selected intersecting point from the object points set. A related method is also disclosed.
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