Multi-point touch equipment based on depth camera

Abstract

The invention discloses multi-point touch equipment based on a depth camera. The equipment comprises an image acquisition module, a contact processing module and a projection display module, wherein the image acquisition module is used for acquiring color image information and hand contact depth image information and transmitting the color image information and the hand contact depth image information to the contact processing module; the contact processing module is used for processing the received information to obtain the image information of a projection plane, and further, the contact information of fingers is obtained; contact coordinates on the projection plane are transformed into graphical interface coordinates; the contact information is converted into operating information, and the operating information is transmitted into an application program; and the projection display module is used for projecting the received information onto a specified plane. By adopting the equipment, damage cannot be caused to a human body; the operating dynamics of a user can be accurately captured; and the touch-control reducibility of an image is high. Moreover, the multi-point touch equipment based on the depth camera can be easily carried, and therefore, the interactive experience of the user during an application process is enhanced.

Description

technical field [0001] The invention relates to the field of touch display, in particular to a multi-point touch device based on a depth camera. Background technique [0002] With the advancement of technology, human-computer interaction no longer satisfies the traditional keyboard and mouse operations, and more natural and more in line with people's living habits of interaction methods have emerged one after another. Voice control, gesture recognition, multi-touch, etc. are changing people's traditional interaction methods. Especially multi-touch has developed rapidly in recent years. Resistive touch screens, capacitive touch screens, infrared sensors, etc. are common implementations of multi-touch. [0003] The invention patent application with the Chinese patent application number 201110182527.7 discloses a multi-touch display device. The receiving module installs an infrared camera and a main control module on the back of the touch screen. The main control module is ...

AI Technical Summary

Problems solved by technology

This method needs to use infrared laser as the medium to acquire and locate the touch point. If the infrared laser is not handled properly, it will cause great harm to the human eye, and it can lead to blindness in severe cases.

This device must be fixed in advance, and the slight movement of the infrared camera will also cause the touch point to be unable to be obtained or positioned incorrectly, which is not easy to carry and carry

At the same time, this method can only be used for projection from the back of the screen, and cannot be applied when rear projection is not possible (such as a wall)

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