1. POSTECH VR Introduction to 3D Interaction 포항공과대학교 컴퓨터 공학과 가상현실감 연구실

2. POSTECH VR 2 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

3. POSTECH VR 3 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.)

4. POSTECH VR 4 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

5. POSTECH VR 5 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,... System Tasks select, observe, manipulate,... Interaction Model data format, stage, view, hierarchy, structure,...

6. POSTECH VR 6 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

7. POSTECH VR 7 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?

8. POSTECH VR 8 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