A kind of calibration method and system based on touch screen

Abstract

The invention discloses a calibration method and system based on a touch screen. The calibration method includes: acquiring an infrared signal received by a sensor group; the sensor group is arranged on one side of the touch screen, and the other side corresponding to the touch screen is provided with an emitting device group for emitting infrared rays; determining according to the infrared signal The coordinates of the user's click position; obtain the coordinates of the calibration points corresponding to each click position; the calibration points are the display points on the touch screen; according to the coordinates of all click positions and the coordinates of the corresponding calibration points, use the calibration algorithm to determine the click position The corresponding relationship function between the coordinates of the coordinates of the touch screen display point and the coordinates of the touch screen display point; according to the corresponding relationship function, the functional operation of the touch screen display point corresponding to the user's click position is executed. By adopting the calibration method and system of the present invention, the error of the traditional calibration method is avoided, the efficiency and precision of calibration are greatly improved, and the individual requirements of users are met.

Description

technical field [0001] The invention relates to the field of infrared touch control, in particular to a calibration method and system based on a touch screen. Background technique [0002] Existing touch systems include touch all-in-one machines and touch whiteboards. Before using the touch system, the touch screen needs to be calibrated. Without calibration, the touch operation cannot be realized accurately, resulting in a deviation between the user’s click position and the screen’s response position. Calibration can reduce this deviation to almost nothing. Different touch systems adopt different methods for the calibration of the touch screen, such as four-point calibration, that is, four points are displayed on a specific position on the screen, and the user needs to click these four points in sequence to realize the calibration of the touch screen. Moreover, during calibration, the position clicked by the user is sensed by pressure, and it needs to be accurately sensed ...

AI Technical Summary

Problems solved by technology

Moreover, during calibration, the position clicked by the user is sensed by pressure, and it needs to be accurately sensed when the user's pressure is high. When the user's pressure is low, the clicked position cannot be accurately identified, resulting in low calibration efficiency.

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