Multiple-target location capture positioning system and method based on multiple cameras

A multi-camera and positioning system technology, applied in the field of virtual reality multi-position tracking, can solve the problems of complex installation configuration, high price, inability to expand rooms or larger areas, etc., and achieve simple environment layout, high scalability and portability , experience a variety of effects

Active Publication Date: 2017-06-13
NORTHWEST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

They have the following shortcomings: the limitation of head position capture makes the experiencer only sit on a chair to interact or control the movement through the keyboard, mouse or handle, which cannot make the experiencer feel immersive and truly integrated into the virtual environment Medium, poor experience
The most direct way to solve this problem is to use indoor positioning and position capture technology; the existing indoor wireless positioning system mainly uses short-distance wireless technologies such as mobile base stations, infrared, ultrasonic, Bluetooth, Wi-Fi, and RFID. The equipment is not only expensive, but also complicated to install and configure, and the accuracy cannot meet the requirements of virtual reality experience
At present, the use of computer vision technology to capture the position movement of the glasses through the camera is widely used by major manufacturers. However, due to the limitation of a single camera, it can only capture the simple movement of the head of a single target in a small range, and cannot be extended to the entire room or larger area

Method used

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  • Multiple-target location capture positioning system and method based on multiple cameras
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  • Multiple-target location capture positioning system and method based on multiple cameras

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0098] The inventor conducted experiments to verify the invention in a real room. PSEYE was used as the experimental camera in the experiment, and the parameters were:

[0099] pseye_distance_parameters={

[0100] / *height=* / 517.281,

[0101] / *center=* / 1.297338,

[0102] / *hwhm=* / 3.752844,

[0103] / *shape=* / 0.4762335,

[0104] }.

[0105] The specific scenarios are as follows:

[0106] Step one, deploy the test site:

[0107] The instance is in a block of 20m 2 Four pseye 120° wide-angle cameras are configured in the indoor space and connected to the server computer. The height of the single camera is 3m from the ground and the coverage area is 10.392m. 2 . A total of 2 experiencers wore Oculus DK2, psmove photosphere equipment and a convenient computer client. The server computer and the client computer are connected to the same wireless LAN.

[0108] Step two, equipment and environment initialization:

[0109] The present invention only needs to set the initial base coordinates (0,0) fo...

Embodiment 2

[0117] The steps of this embodiment are the same as those of embodiment 1, the difference is that the indoor space area is expanded to 40m 2 , And increase to 8 cameras at the same time. The experimental results are the same as in Example 1.

[0118] Through the actual tests of Example 1 and Example 2, it is proved that the system has a certain scalability and can be competent for virtual reality tasks in a wider area.

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PUM

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Abstract

The invention discloses a multiple-target location capture positioning system based on multiple cameras. The system comprises as server, at least two cameras, multiple VR glasses, clients and photospheres, wherein the number of the clients, the number of the photospheres and the number of the VR glasses are the same; the LED photospheres provide locations of experiencers for the cameras; the server receives image data sent by the cameras and processes the image data to obtain location data of the experiencers; the client reads data sent by the VR glasses and sends the data to the server; the location data, sent by the server, of the experiencers is received and processed, the location data of all the experiencers is revaluated into coordinates of a virtual environment, the virtual environment or a model is generated in real time, and virtual pictures are rendered to the VR glasses in real time. The system overcomes the limitations that existing VR glasses only support small-range head movement and movement is done through handle operation, the experiencers can completely get rid of the limitations in the past to move freely, and virtual reality experience more approximate to a true environment is provided; interaction among multiple users in the same virtual environment can be supported.

Description

Technical field [0001] The invention belongs to the field of virtual reality multi-position tracking, and specifically relates to a positioning system and method, in particular to a multi-camera-based multi-target position capturing and positioning system and method. Background technique [0002] Virtual Reality (Virtual Reality: VR) is a high-tech that has emerged in recent years: a three-dimensional virtual environment generated by computer simulation, which provides the experience of visual, auditory, tactile and other sensory simulation experience to the experience Feel this virtual environment, and even interact with the virtual environment. In recent years, virtual reality has been widely used in certain professional fields, such as military, medical and even real estate development. But with the Oculus Rift, an immersive virtual reality glasses developed by the American company Oculus, the distance between virtual reality and ordinary civilian use has been narrowed. Ocul...

Claims

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Application Information

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IPC IPC(8): G06F3/01G06F3/0481G06F3/14
CPCG06F3/011G06F3/04815G06F3/14G06F2203/012
Inventor 赵万青李光辉罗迒哉范建平彭进业
Owner NORTHWEST UNIV
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