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Introduction to 3D Interaction. 포항공과대학교 컴퓨터 공학과 가상현실감 연구실. POSTECH VR Laboratory. Members Prof. Chan Mo Park and Asst. Prof. Gerard Jounghyun Kim Research Staff(3), Ph.D. Student(3), Master’s Student(10) Research 3D interaction interactive music system multimodal interaction for CAD - PowerPoint PPT Presentation
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POSTECH VR
Introduction to 3D Interaction
포항공과대학교 컴퓨터 공학과
가상현실감 연구실
2POSTECH VR Introduction
POSTECH VR Laboratory
• Members– Prof. Chan Mo Park and Asst. Prof. Gerard Jounghyun Kim– Research Staff(3), Ph.D. Student(3), Master’s Student(10)
• Research– 3D interaction
• interactive music system• multimodal interaction for CAD• VR based motion training
– software engineering of virtual worlds– human body modeling
• http://www.postech.ac.kr/cse/vr
3POSTECH VR Introduction
발표 순서
• Introduction(90 min.)– 3D interaction tasks(definition)– issues on 3D interaction design– taxonomy of 3D interaction
• Task oriented interaction design at POSTECH(50 min.)– interaction techniques for immersive CAD : menu selection– interactive music system : manipulation/view– VR based motion training(Ghost Metaphor) : following/view
• Evaluation for 3D interaction tasks(30 min.) – usability engineering method – evaluation techniques
• Conclusion and Discussion(10 min.)
4POSTECH VR Introduction
Why 3D Interaction?
• 3D/VE application – immersion(presence)– naturalness(cognitive load)– fast/efficient
• Application up-to-date– example
• architectural walkthrough, visualization, training etc.– complex interaction– usability– problem
• introduce 2D interaction technique : DOF problem• advanced technology : not ensure that VE’s are usable
5POSTECH VR Introduction
Definitions
• Interface technology– specialized choice of the hardware/software through which a
user communicates with a computer system
• Interaction model– a model by which the user accomplishes some tasks via the
interface
H/WS/W
HMD, Tracker, Glove...
Performer,Inventor,WTK, ...
Syste
m
Tasksselect, observe,manipulate, ...
Interaction Model
data format, stage, view,hierarchy, structure, ...
6POSTECH VR Introduction
Interaction Tasks
• Navigation– movement(travel, walk) and planning(way-finding)
• Selection– choosing one or more objects
• Manipulation– specification of object position, orientation, scale, shape,
others
• Selection Manipulation ?– selection may be a stand-alone task – ex) menu selection(command)
• Others : almost atomic(chunked) tasks– visual information browsing– measurement– data input– following, flow control
7POSTECH VR Introduction
Goals of Interaction Design
• Performance– efficiency, accuracy and productivity– quantitative measures : how well is task being done?
• Usability– easy to use and learn– qualitative experience : how easy is it to communicate with?
• Applicability– take not hindered by the interface– qualitative measures : how well applicable is it to other
applications?
8POSTECH VR Introduction
Directions of Research
• Generic interaction technique– do not consider particular applications – infer from real 3D interaction methods/develop new
techniques
• Application dependent interaction technique– suitable interaction methods for a given application– start from GIT and consider new techniques
• Conflict– from GIT to ADIT and from ADIT to ADIT– need methodology for developing/verifying GIT/ADIT in a
scientific way
• Goal– guideline for 3D interaction design– GIT : initial guideline for 3D interaction design– ADIT : case by case UI study design of process