Camera shooting type touch control method and device

Abstract

The invention provides a camera shooting type touch control method and device. The method comprises the following steps: firstly computing the first initial coordinates of a touch object and then computing the theoretical value of the touch positioning information of the first initial coordinates which are shot by a third camera device or a fourth camera device according to the first initial coordinates; and then comparing the theoretical value of the touch positioning information with the actual value obtained through shooting and screening the first initial coordinates to determine the coordinate of the touch object. The method and the device have the following beneficial effects that: the initial coordinates are unnecessary to compute twice, the computation amount in camera shooting type positioning and positioning time delay are reduced and the speed of camera shooting type touch positioning is increased; as the two camera devices are adopted to respectively shoot the two subareas of a touch control area, fisheye lenses with high performance are unnecessary to install, thus lowering the cost; and as the subarea where the touch object possibly appears is firstly judged and then the shot images are obtained from the corresponding camera device, the shot images of the two camera devices are unnecessary to obtain, thus simplifying a positioning process and speeding up positioning.

Description

technical field [0001] The present invention relates to the technical field of touch control, in particular to a touch control method for a display device and a touch control device for a display device. Background technique [0002] As a new type of computer input technology, touch control technology makes human-computer interaction more intuitive. Because it brings great convenience to users, in addition to being applied to personal portable information products, it has been applied in information appliances, public information, Electronic games, office automation equipment and other fields. [0003] Common touch control technologies include capacitive touch technology, resistive touch technology, infrared touch technology or camera touch technology, among which camera touch technology has the advantages of simple equipment and easy installation, and has become an increasingly popular touch control technology. important part. [0004] The principle of a camera-type touch...

AI Technical Summary

Problems solved by technology

[0005]However, although the above camera touch technology can accurately locate each touch object, since the initial coordinates of the touch points need to be calculated twice, the calculation If the amount is large, it may cause a certain delay in the positioning of the touching object, making the user feel uncomfortable

And, since only three cameras are set, the shooting angle of the camera set at the midpoint needs to reach more than 180 degrees, and a fisheye lens with better performance needs to be used, and it is necessary to prevent distortion of the captured image, and the cost is relatively high

Images