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Multi-touch sensing system capable of optimizing touch bulbs according to variation of ambient lighting conditions and method thereof
Multi-touch sensing system capable of optimizing touch bulbs according to variation of ambient lighting conditions and method thereof
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机译:能够根据环境照明条件的变化来优化触摸灯泡的多点触摸感测系统及其方法
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摘要
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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