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Extension tracking method based on HTC-VIVE

A transmitter and receiver technology, which is applied in the field of tracking and positioning, and can solve problems such as the decrease of refresh rate

Active Publication Date: 2017-12-22
BEIJING INSTITUTE OF TECHNOLOGYGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When multiple transmitters are used in cascade, in order to avoid signal interference, only one transmitter can work at the same time, which causes the refresh rate of the system to drop exponentially when multiple transmitters are used in cascade
Since the larger the tracking area, the more transmitters are needed, so in order to ensure sufficient tracking data refresh rate, the current HTC VIVE system only uses two transmitters, and its tracking area is also limited to a space of 5mx5m

Method used

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  • Extension tracking method based on HTC-VIVE
  • Extension tracking method based on HTC-VIVE
  • Extension tracking method based on HTC-VIVE

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Embodiment Construction

[0029] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0030] Since the present invention is improved based on the HTC VIVE system, the working principle of the HTC VIVE is briefly introduced first. like figure 1 As shown, the HTC VIVE's tracking system consists of 2 transmitter base stations, a helmet-mounted display, and 2 handles. Dozens of photosensitive receivers are installed on the helmet display and handle. When the infrared light scanning signal of the base station is received by a certain number of receivers, the spatial position of the helmet display and handle can be calculated, so as to realize the user's posture tracking. .

[0031] Although the receiver can achieve tracking as long as it receives the optical signal emitted by one base station, in order to avoid occlusion and expand the tracking range, the system uses two transmitter base stations, and the controller allocates working time t...

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Abstract

The invention discloses an extension tracking method based on HTC-VIVE and is an extension scheme for the HTC-VIVE. According to the hardware, a synchronization controller and stroboscopes are added based on the HTC-VIVE original edition. The synchronization controller is used for controlling a plurality of transmitter base stations and the stroboscopes. Various base stations are coded through utilization of delayed exposure of the stroboscopes. The signals of the transmitter base stations are distinguished at a receiver end through utilization of a decoding algorithm. According to the method, the multi-base station signal interference problem of the original edition HTC-VIVE device is solved from the technical principle, and any number of transmitters can be cascaded without reducing a tracking data refresh rate. The more the transmitters are, the wider the scanning coverage range is. According to the method, more transmitters can be supported, so a tracking area can be expanded to a relatively wide range.

Description

technical field [0001] The invention belongs to the technical field of tracking and positioning, and in particular relates to an extended tracking method based on HTC-VIVE, which can be used in motion capture, surgical navigation, virtual reality and other application fields that require tracking and positioning. Background technique [0002] The HTC VIVE system consists of a transmitter base station and a photosensitive receiver. The base station of the transmitter can send periodic optical signals to scan the tracking area. After the receiver receives the scanning signal of the transmitter, it converts the optical signal into a digital signal to obtain the image coordinates of the receiver relative to the transmitter. After the receiver is scanned, the computer vision algorithm can be used to obtain the spatial pose of the rigid body composed of the receiver. [0003] When HTC VIVE is tracking, the transmitter needs to send out a frame synchronization scan signal first, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W64/00H04B10/116H04B14/02H04W56/00
CPCH04B10/116H04B14/026H04W56/001H04W64/00
Inventor 翁冬冬李冬胡翔
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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