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Finger interaction identification system based on MEMS laser scanning

An identification system and laser scanning technology, applied in the field of finger interactive identification system, can solve the problems of serious heat dissipation, large volume, simple interactive content, etc., and achieve the effect of being convenient to carry and small in size

Active Publication Date: 2020-03-17
NORTH CHINA UNIVERSITY OF TECHNOLOGY
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0003] Home-use projection systems are moderate in size, most of which do not have functions such as gesture interaction, and a few projection systems with interactive functions also have problems such as large size, simple interactive content, and insufficient clarity
[0004] The projection system in the prior art needs cumbersome operations such as focusing or automatic correction before starting, and consumes a lot of power and heats up seriously; the laser ranging function needs to be equipped with devices such as motors and polygonal mirrors, resulting in excessive volume and high power consumption ;The click operation of the human projection screen is not rigorous. It judges whether the fingertip has clicked through the depth detection of the fingertip. Because the small movements of the human hand cannot be captured well, it often leads to misoperation.

Method used

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  • Finger interaction identification system based on MEMS laser scanning
  • Finger interaction identification system based on MEMS laser scanning
  • Finger interaction identification system based on MEMS laser scanning

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Embodiment Construction

[0040] The present invention will be described in detail below in conjunction with the implementations shown in the drawings, but it should be noted that these implementations are not limitations of the present invention, and those of ordinary skill in the art based on the functions, methods, or structural changes made by these implementations Equivalent transformations or substitutions all fall within the protection scope of the present invention.

[0041] This embodiment provides a finger interaction recognition system based on MEMS laser scanning, including:

[0042] Laser light source module, used to emit RGB three-color laser;

[0043] The MEMS galvanometer module is used to receive the laser light emitted by the laser light source module, and scan out the projection screen line by line;

[0044] The laser receiving module is used to receive the reflected laser light during laser imaging;

[0045] The depth image acquisition module is used to obtain a depth image with t...

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Abstract

The invention provides a finger interaction recognition system based on MEMS laser scanning. The system comprises a laser light source module which is used for emitting the RGB three-color laser; a galvanometer module which is used for receiving the laser emitted by the laser light source module and scanning the projection pictures line by line; a laser receiving module used for receiving the laser reflected during laser imaging; a depth image acquisition module which is used for acquiring a depth image with the same size as the projection pictures based on a TOF algorithm; a fingertip detection module which is used for obtaining the position and depth of a fingertip by using a deep learning algorithm; a hand image segmentation module which is used for segmenting a hand image from the depth image and determining the fingertip position; a finger action recognition module which is used for performing finger action recognition based on a neural network and a support vector machine classifier; and a finger interaction module which is used for operating and controlling the content change of the projection pictures based on the determined fingertip position. The system is small in size,is capable of being operated by hands, is convenient to carry, can realize the accurate fingertip positioning and gesture recognition, and can operate and control the projection content in real time through hands.

Description

technical field [0001] The invention belongs to the technical field of exchange projection, in particular to a finger interactive recognition system based on MEMS laser scanning. Background technique [0002] Existing interactive projection systems are roughly divided into two categories, industrial grade and household grade. Because industrial-grade projection requires high resolution and high definition, its volume and weight are very high, and it needs to be equipped with a camera for interaction and a screen suitable for projection. The system can only be fixed at a certain position in the room , does not support mobile anytime anywhere. [0003] Household-level projection systems are moderate in size, and most of them do not have functions such as gesture interaction. A few projection systems with interactive functions also have problems such as large size, simple interactive content, and insufficient clarity. [0004] The projection system in the prior art needs cumb...

Claims

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Application Information

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IPC IPC(8): G06F3/01G06K9/00
CPCG06F3/017G06F2203/012G06V40/28Y02T10/40
Inventor 王立军李争平于霄洋
Owner NORTH CHINA UNIVERSITY OF TECHNOLOGY
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