DeepAI
Log In Sign Up

Manually Acquiring Targets from Multiple Viewpoints Using Video Feedback

04/14/2022
by   Bailey Ramesh, et al.
0

Objective: The effect of camera viewpoint was studied when performing visually obstructed psychomotor targeting tasks. Background: Previous research in laparoscopy and robotic teleoperation found that complex perceptual-motor adaptations associated with misaligned viewpoints corresponded to degraded performance in manipulation. Because optimal camera positioning is often unavailable in restricted environments, alternative viewpoints that might mitigate performance effects are not obvious. Methods: A virtual keyboard-controlled targeting task was remotely distributed to workers of Amazon Mechanical Turk. The experiment was performed by 192 subjects for a static viewpoint with independent parameters of target direction, Fitts' law index of difficulty, viewpoint azimuthal angle (AA), and viewpoint polar angle (PA). A dynamic viewpoint experiment was also performed by 112 subjects in which the viewpoint AA changed after every trial. Results: AA and target direction had significant effects on performance for the static viewpoint experiment. Movement time and travel distance increased while AA increased until there was a discrete improvement in performance for 180. Increasing AA from 225 to 315 linearly decreased movement time and distance. There were significant main effects of current AA and magnitude of transition for the dynamic viewpoint experiment. Orthogonal direction and no-change viewpoint transitions least affected performance. Conclusions: Viewpoint selection should aim to minimize associated rotations within the manipulation plane when performing targeting tasks whether implementing a static or dynamic viewing solution. Because PA rotations had negligible performance effects, PA adjustments may extend the space of viable viewpoints. Applications: These results can inform viewpoint-selection for visual feedback during psychomotor tasks.

READ FULL TEXT

page 9

page 10

page 14

page 16

page 19

08/01/2017

Best Viewpoint Tracking for Camera Mounted on Robotic Arm with Dynamic Obstacles

The problem of finding a next best viewpoint for 3D modeling or scene ma...
08/21/2018

Real Time Elbow Angle Estimation Using Single RGB Camera

The use of motion capture has increased from last decade in a varied spe...
03/03/2022

Playable Environments: Video Manipulation in Space and Time

We present Playable Environments - a new representation for interactive ...
07/08/2021

3D Neural Scene Representations for Visuomotor Control

Humans have a strong intuitive understanding of the 3D environment aroun...
11/22/2022

Bimanual Motor Strategies and Handedness Role During Human-Exoskeleton Haptic Interaction

Bimanual object manipulation involves multiple visuo-haptic sensory feed...
06/02/2019

Effects of Different Hand-Grounding Locations on Haptic Performance With a Wearable Kinesthetic Haptic Device

Grounding of kinesthetic feedback against a user's hand can increase the...