In geographic data videos, camera movements are frequently used and combined to present information from multiple perspectives. However, creating and editing camera movements requires significant time and professional skills. This work aims to lower the barrier of crafting diverse camera movements for geographic data videos. First, we analyze a corpus of 66 geographic data videos and derive a design space of camera movements with a dimension for geospatial targets and one for narrative purposes. Based on the design space, we propose a set of adaptive camera shots and further develop an interactive tool called GeoCamera. This interactive tool allows users to flexibly design camera movements for geographic visualizations. We verify the expressiveness of our tool through case studies and evaluate its usability with a user study. The participants find that the tool facilitates the design of camera movements.
@article{arxiv.2303.06460,
title = {GeoCamera: Telling Stories in Geographic Visualizations with Camera Movements},
author = {Wenchao Li and Zhan Wang and Yun Wang and Di Weng and Liwenhan Xie and Siming Chen and Haidong Zhang and Huamin Qu},
journal= {arXiv preprint arXiv:2303.06460},
year = {2023}
}
Comments
15 pages. Published as a conference paper at the ACM Conference on Human Factors in Computing Systems (CHI) 2023