Device for calibrating light projection keyboard and use method thereof

Abstract

The invention discloses a device for calibrating a light projection keyboard and a use method thereof. The device for calibrating the light projection keyboard comprises a box body, a calibrating camera, a fixing device, a camera parameter calibrating plate and a camera data acquisition and information calculation device, wherein the internal part of the box body is hollow; the calibrating camera is arranged in the box body and positioned at the top of the box body; the fixing device is used for fixing a to-be-calibrated light projection keyboard at the bottom of the box body; a plurality of infrared LED lamps are arranged on the camera parameter calibrating plate; the camera data acquisition and information calculation device is used for acquiring a laser projection image of the light projection keyboard, calculating the keyboard position information according to the acquired image and transmitting the keyboard position information to the to-be-calibrated light projection keyboard device. The device for calibrating the light projection keyboard solves the problems that the operation of calibrating the light projection keyboard manually needs to manually determine the image coordinate data of all the keys of the to-be-calibrated keyboard, the operation is repeated, the labor amount is large, and the light projection keyboards cannot be calibrated in batches.

Description

technical field [0001] The invention belongs to the technical field of optical keyboard device calibration, and in particular relates to a device for calibrating an optical projection keyboard and a method for using the device. Background technique [0002] The keyboard is one of the most commonly used input devices for electronic equipment, and it is widely used in computers, electronic instruments and various terminal equipment. The keyboard is the most commonly used and most important input device, through which English letters, numbers, punctuation marks, etc. can be input into the computer, so as to issue commands and input data to the computer. [0003] In order to solve the problems that the traditional physical keyboard is too large, difficult to carry and place, easy to absorb dust and difficult to clean, and easy to be damaged by excessive use, the equipment manufacturer has developed a virtual laser keyboard (Virtual LaserKeyboard). The virtual laser keyboard hard...

AI Technical Summary

Problems solved by technology

[0005] The first object of the present invention is to provide a device for calibrating the optical projection keyboard, and the second object of the present invention is to provide a method for using the device for calibrating the optical projection keyboard, so as to solve the problem of industrial production of virtual laser keyboards The problem of slow calibration speed and poor key position accuracy

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