IEEE Consumer Electronics Magazine - May 2018 - 73

©iStockphoto.com/Jiraro praditcharoenkul

Advanced Interaction and VR/AR

Using augmented reality for a city model.

©iStockphoto/vdv tut

By Longyu Zhang,
Sifeng Chen, Haiwei Dong,
and Abdulmotaleb El Saddik

Visualizing
Toronto City Data
with HoloLens

T

he smart city has become a new trend of interest
with recent developments in information and communications technology (ICT) and the Internet of Things
(IoT). These technologies provide users with new ways
to interact with smart cities, especially city data. Visualizing data is crucial for improving a city's planning and management. Currently, most cases of city data visualization are mainly
implemented on computers and handheld and other devices. To
take advantage of augmented-reality (AR) technology, we present a method of visualizing a three-dimensional (3-D) city
model of Toronto and various types of city data with the cuttingedge AR device Microsoft HoloLens. Details of our 3-D city
model creation, city data extraction, geographic data processing,
and user interaction design are illustrated in this article.
Digital Object Identifier 10.1109/MCE.2018.2797658
Date of publication: 10 April 2018

2162-2248/18©2018IEEE

HOLOLENS FOR 3-D CITY DATA
Transforming a traditional city into a smart city is an interesting, prevalent, and appealing topic. Smart cities can greatly
improve many city components, such as transportation, finance,
governance, and environment. A good implementation of a
smart city should contribute to achieving a quick comprehension of what the city data stand for and reducing the work
and complexity in city management and decision making. As
a consequence, a digital, smart, efficient, and sustainable
city can be expected to improve and facilitate the lives of its
citizens [1].
Without a doubt, city data play a crucial role in the construction of a smart city. These data contain various types of
information and can be used to visualize, analyze, and predict
the state of the city; e.g., Dong et al. introduced available open
data sets from seven Canadian cities and listed several applications using these data sets for visualization, localization, and
MAy 2018

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IEEE Consumer Electronics Magazine

73



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