VisTorch: Interacting with Situated Visualizations using Handheld Projectors
Abstract
1 Introduction
2 Background
2.1 Ubiquitous/Immersive/Situated Analytics
2.2 Dashboards and Memory
2.3 Ubiquitous Displays
2.4 Projector-based Displays and Interaction
Platform | Cost | Supply | World | Sharing | Mobility | Embedding | |
---|---|---|---|---|---|---|---|
External screens | medium | widespread | porthole | shared | fixed | none | |
* | Mobile devices | medium | widespread | porthole | personal | mobile | none |
Virtual Reality (HMD) | low | common | integrated | personal | room | none | |
Augmented Reality (handheld) | medium | widespread | porthole | personal | mobile | none | |
Augmented Reality (HMD) | high | rare | integrated | personal | mobile | embedded | |
| Projectors (fixed) | medium | rare | integrated | shared | fixed | surfaces |
| Projectors (handheld) | medium | rare | integrated | shared | mobile | surfaces |
3 Overview: Situated Visualization Display Platforms
4 VisTorch: Situated Data using Pico-Projectors
4.1 Calibration, Tracking, and Rendering
4.2 Interaction
4.3 Hardware Design
4.4 Software Architecture
(a) Participants P1-P10 | ||||
# | Age Group | Degree | Expertise | |
P1 | 25–30 | Postdoc | Good | |
P2 | 25–30 | PhD. student | Good | |
P3 | 25–30 | PhD. student | Good | |
P4 | 30–35 | PhD. student | Good | |
P5 | 25–30 | PhD. student | Good | |
P6 | 25–30 | Masters | Good | |
P7 | 25–30 | Masters student | Good | |
P8 | 25–30 | Masters student | Good | |
P9 | 25–30 | Masters student | Good | |
P10 | 20–25 | Masters student | Good |
(b) Participants P11-P20 | ||||
# | Age Group | Degree | Expertise | |
P11 | 20–25 | Masters student | Good | |
P12 | 25–30 | Masters student | Good | |
P13 | 25–30 | PhD. student | Good | |
P14 | 25–30 | Masters student | Good | |
P15 | 30–35 | Doctorate | Passing | |
P16 | 25–30 | PhD. student | Good | |
P17 | 20–25 | Masters student | Passing | |
P18 | 30–35 | PhD. student | Expert | |
P19 | 25–30 | Masters student | Good | |
P20 | 25–30 | PhD. student | Expert |
5 User Study
5.1 Apparatus
5.2 Participants
5.3 Experimental Factors
5.4 Experimental Design
3 | View Cardinality V (1, 2, 3) | ||
× | 2 | Data Type T (Non-situated, Situated) | |
× | 3 | repetitions | |
18 | | | trials per participant. |
5.5 Metrics and Analysis
5.6 Tasks
5.7 Procedure
5.8 Results: Overview
5.8.1 Non-situated Data.
5.8.2 Situated Data.
5.8.3 Qualitative Experiences.
5.9 Results: Spatial Organization Strategies
5.9.1 Strict Categorical Clustering:
5.9.2 Redundant Clustering:
5.9.3 Situated Clustering:
5.10 Results: Temporal Organization Strategies
6 Expert Review
6.1 Participants
6.2 Procedure
6.3 Results
6.3.1 Spatial Reasoning.
6.3.2 Engagement and Efficiency.
6.3.3 Collaboration.
7 Discussion
7.1 Explaining the Results
7.2 Generalizing the Results
7.3 Limitations and Future Work
8 Conclusion
Acknowledgments
Footnotes
Supplemental Material
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References
Index Terms
- VisTorch: Interacting with Situated Visualizations using Handheld Projectors
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