Calibration of virtual reality systems

A technology of calibration data and calibration parameters, applied in the field of calibration systems, can solve problems such as camera loss of calibration, incorrect tracking of helmet position or movement, incoordination, etc., to achieve the effect of reducing economic and logical requirements

Active Publication Date: 2016-08-10
CTRL LABS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inaccurately operating a calibrated VR device may result in incorrect tracking of the headset's position or motion, causing inconsistencies between user motion and the media presented to the user via the headset
Additionally, one or more components that determine the helmet's position and movement can lose calibration over time or use
For example, changes in temperature or vibration can cause a camera imaging the helmet's motion to lose calibration

Method used

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  • Calibration of virtual reality systems
  • Calibration of virtual reality systems
  • Calibration of virtual reality systems

Examples

Experimental program
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Effect test

Embodiment Construction

[0030] system structure

[0031] figure 1 is a block diagram of one embodiment of a virtual reality (VR) system environment 100 in which a VR console 110 operates. figure 1 The system environment 100 shown in FIG. 2 includes a VR headset 105 , an imaging device 135 , and a VR input interface 140 each coupled to a VR console 110 . Although figure 1 An exemplary system 100 is shown including a VR headset 105, an imaging device 135, and a VR input interface 140, but in other implementations, any number of these components may be included in the system 100. For example, there may be multiple VR headsets 105 each having an associated VR input interface 140 and monitored by one or more imaging devices 135, and each VR headset 105, VR input interface 140, and imaging device 135 are connected to the VR console 110 communications. In alternative configurations, different and / or additional components may be included in the system environment 100 .

[0032] VR headset 105 is a hea...

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Abstract

A virtual reality (VR) console receives slow calibration data from an imaging device and fast calibration data from an inertial measurement unit on a VR headset including a front and a rear rigid body. The slow calibration data includes an image where only the locators on the rear rigid body are visible. An observed position is determined from the slow calibration data and a predicted position is determined from the fast calibration data. If a difference between the observed position and the predicted position is greater than a threshold value, the predicted position is adjusted by a temporary offset until the difference is less than the threshold value. The temporary offset is removed by re-calibrating the rear rigid body to the front rigid body once locators on both the front and rear rigid body are visible in an image in the slow calibration data.

Description

technical field [0001] The present disclosure relates generally to calibrating systems, and more particularly, to calibrating virtual reality systems. Background technique [0002] Motion tracking is an old problem that has been solved in many devices. Examples include global positioning systems, aircraft radar systems, robotic systems, and home entertainment systems. In the last case, existing devices track the motion of a game controller or the person interacting with the game. [0003] Several important characteristics determine the type of sensing and the most suitable computing hardware: 1) the size of the rigid body, 2) the volume of space that can move on the rigid body, 3) the limit on the maximum rate of velocity and acceleration of the body, 4 ) predictability of rigid bodies. [0004] In a motion tracking system, it is usually required to track the motion of a device in contact with a human body while in a relatively small space (usually in a fixed room), but t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/262G02B27/02G06T19/00
CPCG02B2027/0178G02B2027/0138G02B2027/014G06T2207/30204G06T7/75G06F1/163G06F3/011G02B27/017G02B2027/0187G06F3/012G06T7/80G06F1/00G06T15/205G06T19/006G06F3/0346H04N17/04G06T7/74G06T2207/10016
Inventor 多夫·卡茨乔纳森·夏因罗宾·米勒马克西姆·卡采夫尼尔·康岑史蒂文·拉瓦列迈克尔·安东诺夫
Owner CTRL LABS CORP
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