Selection method of optimal starting line of optical touch image

Abstract

The invention discloses a selecting method for an optimal initial row of an optical touch image. The functional modules comprise an optical sensor signal processing unit, an image signal interface unit, an image optimal initial row automatic adjusting unit and an optical sensor calibrating unit. The selecting method for the optimal initial row comprises the following steps of: acquiring, processing and transferring an image signal displayed on a touch screen; automatically selecting the optimal initial row of the image according to the image signal; and automatically selecting the optimal initial row of the image according to the image signal. The self-adaptive adjusting method is adopted for solving the problem that the initial row of the image is difficult to select under a complex environment. The robustness of the selecting method is remarkably improved, so that the calibration of the optical sensor is more stable; the instantaneity is strong; the extracting precision is high; and the operation is easy. When the touch screen is installed, the factors such as illumination and the like of the installation environment of the touch screen are not needed to be evaluated; and the installation environment of the touch screen is unnecessary to take into consideration. In particular under the industrial mass-production mode, the selecting method provided by the invention is easier to realize and has high mass-production efficiency.

Description

technical field [0001] The invention relates to optical touch technology, in particular to a method for selecting the optimal starting line of an optical touch image using automatic selection. Background technique [0002] At present, the mainstream touch technology in the domestic market is mainly based on vector pressure sensing technology, resistance technology, infrared technology, capacitive technology, and touch surface acoustic wave technology. Although these touch technologies have their own strengths, there are more or less many Technical problems are difficult to solve. The emergence of optical touch screens has basically solved the problems of many touch screens, and has the superior conditions to lead the future touch market. Optical touch technology is a new technology different from other existing touch technologies. The optical sensor responds quickly to detailed movements, making the operator's operation lighter, smoother and more accurate. The optical modu...

AI Technical Summary

Problems solved by technology

However, in actual operation, it is found that the selection accuracy is not high with this method of manual adjustment of the start line, especially in the environment where the optical sensor is installed unevenly and the light interference is serious, the accuracy of the optimal start line selection of the image Worse; moreover, due to the manual adjustment, the flexibility is not strong, in the industrial mass production environment, this method is not easy to operate, and the time cost is relatively large

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