Frame-type multi-point position and touch monitoring and controlling system and method based on optical sensing

Abstract

The invention discloses a frame-type multi-point position and touch monitoring and controlling system and method based on optical sensing and relates to a frame-type multi-point touch detecting method based on team working of multiple optical sensors. The system disclosed by the invention consists of an information collecting system and an information processing system. A hardare frame is configured on the periphery of a touch surface; optical sensors are configured in the four corners of the frame and also around the touch surface; the visual angle of the optical sensors are directed at a vertical face which is vertical to the touch surface, and objects entering into the touch surface are detected by each of the optical sensors respectively; and the quantity and positions of the optical sensors are determined by the quantity of the touch points to be detected. The multi-point touch detecting method disclosed by the invention comprises the following steps: firstly, obtaining the relevant information of an object in a touch zone is obtained according to the imaging information of the optical sensor; secondly, integrating all the information so as to obtain the positions of all real touch points through a detection algorithm, and then carrying out system correction; and finally, converting the position information of the objects into coordinates in the touch zone, thus, the detection is completed. The system and detecting method disclosed by the invention can be used for really detecting and positioning the touch points of any quantity without false point and missed point and with high detection precision. In addition, the manual touch, pen touch and other mode can be adopted with no restrictions on the touch mode.

Description

technical field [0001] The invention relates to a frame-based multi-point positioning touch detection control system and method based on optical sensing, which is a multi-point touch positioning technology using optical sensor imaging calculation, and belongs to the field of human-computer interaction touch control systems that are booming today. Background technique [0002] The rapid development of electronic information technology, especially the rapid development of Internet technology, makes people's life, study and work more and more inseparable from the application of various electronic products. Almost every electronic application provides a human-computer interaction user interface, such as buttons, switches, keyboards, mice, etc. Among the related technologies of various user interfaces, touch-sensitive displays (also known as "touch screens" or "touch panels") provide a user-centered natural and efficient way of human-computer interaction, and are used in personal...

AI Technical Summary

Problems solved by technology

However, the accuracy of detecting touch events through the depth information obtained by the upper camera is not high, and there are restrictions on user interaction behaviors. For example, the hand cannot be blocked by other parts of the body (such as the head) during interaction. Large number of occlusion issues between points

A similar method also has a four-way mode, and there is also the problem that it cannot be positioned correctly when multiple points are occluded from each other.

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