Helmet display virtual vision time delay compensation system and method based on human body surface myoelectric information

Abstract

The invention relates to HMD virtual visual delay compensation system and working procedure, based on the body surface electromyography information, belongs to virtual reality technology. The system includes collecting electrode, reference electrode, collection equipment of multi-channel surface electromyography information, computers, HMD.The work steps of the system are: place electrode on the neck of operator, and make signal amplification and filtering connecting with multi-channel surface electromyography information collection devices, put the digital signal treatment into the computer, first initial calibration procedures by the computer, by we can initially study the typical head movement according to voice prompt, then move the head to forecast operating procedures in the virtual HMD visual signal delay compensation, while tracking data with the original data integration, improving accuracy of head tracking. The characteristic of this invention is small in size, light weight, strong predictive power, and high sensitivity.

Description

(1) Technical field [0001] The invention relates to the field of virtual reality, and is a technology for compensating virtual visual time delay in a helmet display system, which is used to assist an existing position tracking device in the helmet display system to determine the movement direction and amplitude of a human head, and transmit them to a computer The system is used for time delay compensation of virtual vision. (2) Background technology [0002] Virtual reality emphasizes immersion, and is a simulation technology that ultimately takes human perception (including visual, auditory, tactile, and even smell) effects as the evaluation standard. Of all the senses, vision occupies the most important part, so it has the greatest impact on immersion. Head-mounted display is an important virtual vision device, which is widely used. In order to display the corresponding virtual scene in real time according to the human movement, it is often necessary to track the head mov...

AI Technical Summary

Problems solved by technology

Once the head moves quickly, the view on the head-mounted display will have an obvious delay effect, which will affect the simulation effect

At the same time, because the electromagnetic tracker will be disturbed in the ferromagnetic environment, and the ultrasonic tracker will lose data when occlusion occurs, in the actual simulation, this will cause the inconsistency of the simulation feeling

After operating in this environment for a long time, the operator may even have symptoms of "simulation sickness"

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