Exploiting distant pointing gestures for object selection in a virtual environment

A Natural Interface to a Virtual Environment through Computer Vision-Estimated Pointing Gestures

Gesture and Sign Language in Human-Computer Interaction - Lecture Notes in Computer Science ◽

10.1007/3-540-47873-6_6 ◽

2002 ◽

pp. 59-63 ◽

Cited By ~ 7

Author(s):

Thomas B. Moeslund ◽

Moritz Störring ◽

Erik Granum

Keyword(s):

Computer Vision ◽

Virtual Environment ◽

Natural Interface ◽

Pointing Gestures

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A Comparative Usability Study of Bare Hand Three-Dimensional Object Selection Techniques in Virtual Environment

Symmetry ◽

10.3390/sym12101723 ◽

2020 ◽

Vol 12 (10) ◽

pp. 1723

Author(s):

Xiaozhou Zhou ◽

Hao Qin ◽

Weiye Xiao ◽

Lesong Jia ◽

Chengqi Xue

Keyword(s):

Reaction Time ◽

Virtual Environment ◽

Three Dimensional ◽

Ray Casting ◽

Object Selection ◽

Total Reaction ◽

Bare Hand ◽

Significant Difference ◽

Dimensional Object ◽

Total Reaction Time

Object selection is the basis of natural user–computer interaction (NUI) in a virtual environment (VE). Among the three-dimensional object selection techniques employed in virtual reality (VR), bare hand-based finger clicking interaction and ray-casting are two convenient approaches with a high level of acceptance. This study involved 14 participants, constructed a virtual laboratory environment in VR, and compared the above two finger-based interaction techniques in terms of aspects of the task performance, including the success rate, total reaction time, operational deviation, and accuracy, at different spatial positions. The results indicated that the applicable distance range of finger clicking interaction and finger ray-casting was 0.2 to 1.4 m and over 0.4 m, respectively. Within the shared applicable distance, the finger clicking interaction achieved a shorter total reaction time and higher clicking accuracy. The performance of finger clicking interaction varied remarkably at the center and edge of the horizontal field of view, while no significant difference was found among ray-casting at various horizontal azimuths. The current findings could be directly applied to the application of bare-hand interaction in VR environments.

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Testbed Evaluation of Virtual Environment Interaction Techniques

Presence Teleoperators & Virtual Environments ◽

10.1162/105474601750182333 ◽

2001 ◽

Vol 10 (1) ◽

pp. 75-95 ◽

Cited By ~ 77

Author(s):

Doug A. Bowman ◽

Donald B. Johnson ◽

Larry F. Hodges

Keyword(s):

Virtual Environment ◽

Three Dimensional ◽

Environment Interaction ◽

Interaction Techniques ◽

Object Selection ◽

Immersive Virtual Environment ◽

Dimensional Interaction ◽

Wide Range ◽

The Common ◽

Testbed Experiments

As immersive virtual environment (VE) applications become more complex, it is clear that we need a firm understanding of the principles of VE interaction. In particular, designers need guidance in choosing three-dimensional interaction techniques. In this paper, we present a systematic approach, testbed evaluation, for the assessment of interaction techniques for VEs. Testbed evaluation uses formal frameworks and formal experiments with multiple independent and dependent variables to obtain a wide range of performance data for VE interaction techniques. We present two testbed experiments, covering techniques for the common VE tasks of travel and object selection/manipulation. The results of these experiments allow us to form general guidelines for VE interaction and to provide an empirical basis for choosing interaction techniques in VE applications. Evaluation of a real-world VE system based on the testbed results indicates that this approach can produce substantial improvements in usability.

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