Title
Effects of low video latency between visual information and physical sensation in immersive environments
Abstract
This study aims to investigate the impact on the user's performance when there is latency between the user's physical input to the system and the visual feedback. We developed a video latency control system to film the user's hand movements and control the latency when displaying the video (The standard deviation is 0.38 ms). The minimum latency of the system is 4.3 ms, hence this enables us to investigate the performance for unknown low latency ranges. Using this system, we conducted experiments wherein 20 subjects performed a pointing task based on Fitts' law to clarify the effect of video latency, particularly for low latency. Experimental results showed that when the latency is over 24.3 ms, the user performance begins to decrease. This result will be applied to determine a standard limit for video latency in interactive video devices.
Year
DOI
Venue
2018
10.1145/3281505.3281609
VRST
Keywords
Field
DocType
VR psychology, low video latency, Fitts's law, high-speed projector, high-speed camera, performance evaluation
Interactive video,Fitts's law,Computer science,Simulation,Latency (engineering),Immersion (virtual reality),Latency (engineering),Control system,Standard deviation,Sensation
Conference
ISBN
Citations 
PageRank 
978-1-4503-6086-9
1
0.39
References 
Authors
3
6