Look-From Camera Control for 3D Terrain Maps
Association for Computing Machinery
We introduce three lightweight interactive camera control techniques for 3D terrain maps on touch devices based on a look-from metaphor (Discrete Look-From-At, Continuous Look- From-Forward, and Continuous Look-From-Towards). These techniques complement traditional touch screen pan, zoom, rotate, and pitch controls and allow viewers to quickly transition between top-down, oblique, and ground-level views. We present the results of a study in which we asked participants to perform elevation comparison and line-of-sight determination tasks using each technique. Our results highlight how look-fromtechniques can be integrated on top of current direct manipulation navigation approaches by combining several direct manipulation operations into a single look-from operation. Additionally, they show how look-from techniques help viewers complete a variety of common and challenging map-based tasks.
Look-from-at camera control, terrain navigation, digital mapping, mobile interaction
Kurtis Danyluk, Bernhard Jenny, and Wesley Willett. 2019. Look-From Camera Control for 3D Terrain Maps. In CHI Conference on Human Factors in Computing Systems Proceedings (CHI 2019), May 4–9, 2019, Glasgow, Scotland Uk. ACM, New York, NY, USA, 12 pages. https://doi.org/10.1145/3290605.3300594