Touch projection system and touch action recognition method

A projection system and projection technology, applied in the field of projectors, can solve the problems of high false touch rate, achieve the effects of improving recognition accuracy, solving the high false touch rate, and improving the human-computer interaction experience

Active Publication Date: 2019-09-10
QINGDAO PICO TECH CO LTD
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  • Claims
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Problems solved by technology

[0003] This application provides a touch projection system and a touch action recognition method, which solves the technical pr

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  • Touch projection system and touch action recognition method
  • Touch projection system and touch action recognition method
  • Touch projection system and touch action recognition method

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Embodiment Construction

[0019] In order to make the above objects, features and advantages of the present application more obvious and comprehensible, the present application will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Apparently, the described embodiments are some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0020] With the advancement of technology, the application of touch projection is more and more extensive. The touch projection system projects the image onto the preset projection plane through the projection unit, and the user performs touch operation on the projection plane, providing a new human machine interaction. There is a touch projection solution that uses a depth camera to captur...

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Abstract

The invention discloses a touch projection system and a touch action recognition method. The system comprises a projection unit used for projecting a picture to a preset projection touch area, adepthcamera which is used for acquiring a depth image of the hand of the user during touch control in a preset projection touch control area, an infrared camera which is used for acquiring an infrared image of the preset projection touch area, wherein the infrared image comprises the light spots, the infrared camera and the depth camera are both connected to a control unit; the control unit which is used for receiving the depth image and the infrared image and determining that an effective touch action occurs when it is judged that the first pixel position is matched with the second pixel positionaccording to the depth image and the infrared image, wherein the first pixel position is the pixel position corresponding to the light spot, and the second pixel position is the pixel position corresponding to the fingertip of the finger of the user. Therefore, the technical problem of higher false touch rate of a touch projection scheme in the prior art is solved, and the man-machine interactionexperience is improved.

Description

technical field [0001] The present application relates to the technical field of projectors, in particular to a touch projection system and a touch action recognition method. Background technique [0002] With the maturity of the technology, the depth camera has developed rapidly and has received extensive attention from the industry. There are more and more applications and researches based on the depth camera, such as touch projection. The existing touch projection scheme generally installs a TOF (Time of flight, time of flight, TOF) depth camera above the projection surface such as a desktop, shoots vertically downwards and detects the position of the finger touching the projection surface for touch, but due to the depth The jitter of the depth value measured by the camera, before the user's finger touches the projection surface, the system triggers the touch operation, which leads to a technical problem of high false trigger rate of touch projection. Contents of the in...

Claims

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Application Information

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IPC IPC(8): G06F3/042G06F3/0488H04N9/31
CPCG06F3/0425G06F3/04883H04N9/3141
Inventor 孙涛吴涛周宏伟
Owner QINGDAO PICO TECH CO LTD
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