能根據環境光線變化來最佳化觸控亮點之多點觸控系統及其方法
Multi-touch sensing system capable of optimizing touch bulbs according to variation of ambient lighting conditions and method thereof
 專利名稱 / Patent Title |
能根據環境光線變化來最佳化觸控亮點之多點觸控系統及其方法
Multi-touch sensing system capable of optimizing touch bulbs according to variation of ambient lighting conditions and method thereof |
專利國家 / Country
專利證書號 / Registration Number |
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| 專利權人 / Applicant |
國立臺北科技大學 / National Taipei University of Technology |
| 發明人 / Inventor |
陳彥霖/ Yen-Lin Chen, 余兆偉/ Chao-Wei Yu, 江川彥/ Chuan-Yen Chiang, 張陽郎/ Yang-Lang Chang, 梁文耀/ Wen-Yew Liang |
技術摘要 / 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.
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