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:
Jan. 27, 2015
Filed:
Jul. 27, 2012
Yen-lin Chen, Taipei, TW;
Chao-wei Yu, Pingtung County, TW;
Chuan-yen Chiang, Nantou County, TW;
Yang-lang Chang, Taoyuan County, TW;
Wen-yew Liang, Taipei, TW;
Yen-Lin Chen, Taipei, TW;
Chao-Wei Yu, Pingtung County, TW;
Chuan-Yen Chiang, Nantou County, TW;
Yang-Lang Chang, Taoyuan County, TW;
Wen-Yew Liang, Taipei, TW;
National Taipei University of Technology, Taipei, TW;
Abstract
The present invention discloses a multi-touch sensing system capable of optimizing touch bulbs according to the variation of ambient lighting conditions and a method thereof. The system comprises an image capturing module, a computing module and a processing module. The image capturing module captures a touch image. The computing module converts the touch image into a histogram and selects a grayscale threshold to segment the histogram by dichotomy for generating a segmented image of touch bulbs, and then calculates a between-class variance and a total pixel variance of the segmented image to estimate the separability factor thereof. The processing module determines whether or not the separability factor conforms to a predetermined value; if yes, then the processing module performs an image binarization of the touch image to generate a binary image, or else the processing module repeats the aforementioned process until the separability factor conforms to a predetermined value.