Glowworms and Fireflies: Ambient Light on Large Interactive Surfaces
summary
A large interactive whiteboard gets a peripheral ambient-light strip and two controlled experiments test notifications (position and task) and off-screen cues, comparing Halo and Wedge to two new techniques: Firefly (size-based) and Glowworm (color-ranked brightness). Gamma correction improves visibility (gamma=3). With 10 participants ambient cues run as fast as baselines; Wedge is fastest, Firefly matches performance while lowering task load and frustration, Glowworm gives richer info but confuses less tech-literate users. Design rules: account for viewer position, animate alerts, prefer size over brightness, add color separators.
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chapters (8)
- 0:00Introduction to ambient light
- 0:27Ambient light properties and visualization
- 1:36Comparison with Halo and Wedge
- 3:26User study performance results
- 4:28User preference and task load
- 5:57Design guidelines for ambient light
- 7:03Application scenarios
- 7:47Conclusion and Q&A
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