Urban Pulse: Capturing the Rhythm of Cities
Urban Pulse: Capturing the Rhythm of Cities
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DOI：
10.1109/tvcg.2016.2598585
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发表时间：
2017-01-01
影响因子：
5.2
通讯作者：
Silva, Claudio T.
中科院分区：
文献类型：
--
作者：
Miranda, Fabio;Doraiswamy, Harish;Silva, Claudio T.
城市本质上是动态的。有趣的行为模式通常会在多个时间分辨率下出现在城市的几个关键区域。研究这些模式可以极大地帮助各种专家，从城市规划者和建筑师到人类行为专家。最近的技术创新使得能够收集大量数据来帮助这些研究。然而，使用这些数据集的技术通常侧重于理解城市背景下的数据，因此无法捕捉城市的动态方面。这项工作的目标是在多个城市数据集的背景下了解城市。为此，我们定义了“城市脉搏”的概念，它可以跨多个时间分辨率捕获城市中的时空活动。城市中的突出脉冲是使用数据集的拓扑获得的，并被表征为一组节拍。然后使用这些节拍来分析和比较不同的脉冲。我们还设计了一个视觉探索框架，允许用户在不同条件下探索多个城市内部和跨城市的脉动。最后，我们介绍了来自两个不同领域的专家进行的三个案例研究，证明了我们框架的实用性。
Cities are inherently dynamic. Interesting patterns of behavior typically manifest at several key areas of a city over multiple temporal resolutions. Studying these patterns can greatly help a variety of experts ranging from city planners and architects to human behavioral experts. Recent technological innovations have enabled the collection of enormous amounts of data that can help in these studies. However, techniques using these data sets typically focus on understanding the data in the context of the city, thus failing to capture the dynamic aspects of the city. The goal of this work is to instead understand the city in the context of multiple urban data sets. To do so, we define the concept of an "urban pulse" which captures the spatio-temporal activity in a city across multiple temporal resolutions. The prominent pulses in a city are obtained using the topology of the data sets, and are characterized as a set of beats. The beats are then used to analyze and compare different pulses. We also design a visual exploration framework that allows users to explore the pulses within and across multiple cities under different conditions. Finally, we present three case studies carried out by experts from two different domains that demonstrate the utility of our framework.