• Exploring the distribution patterns of Flickr photos 

      Xuan, Ding; Fan, Hongchao (Journal article; Peer reviewed, 2019)
      In recent years, volunteered-geographic-information (VGI) image data have served as a data source for various geographic applications, attracting researchers to assess the quality of these images. However, these applications ...
    • Feasibility of using Grammars to infer room semantics 

      Hu, Xuke; Fan, Hongchao; Noskov, Alexey; Zipf, Alexander; Wang, Zhiyong; Shang, Jianga (Journal article; Peer reviewed, 2019)
      Current indoor mapping approaches can detect accurate geometric information but are incapable of detecting the room type or dismiss this issue. This work investigates the feasibility of inferring the room type by using ...
    • An Interactive platform for low-cost 3D building modeling from VGI data using convolutional neural network 

      Fan, Hongchao; Kong, Gefei; Zhang, Chaoquan (Journal article, 2021)
      The applications of 3D building models are limited as producing them requires massive labor and time costs as well as expensive devices. In this paper, we aim to propose a novel and web-based interactive platform, VGI3D, ...
    • Reconstructing facade semantic models using hierarchical topological graphs 

      Wang, Yuefeng; Fan, Hongchao; Zhou, Guoqing (Peer reviewed; Journal article, 2020)
      Semantic information in 3D building models is of vital importance for various applications in terms of smart cities. To infer the semantic information and localize the components on building facades, this article proposes ...
    • The State of Mapillary: An Exploratory Analysis 

      Ma, Dawei; Fan, Hongchao; Li, Wenwen; Ding, Xuan (Journal article; Peer reviewed, 2019)
      As the world’s largest crowdsourcing-based street view platform, Mapillary has received considerable attention in both research and practical applications. By February 2019, more than 20,000 users worldwide contributed ...