Yuhan Jiang 2023-3-20

This page demonstrates the function of mapping concrete slab joints in ArcGIS Online with Vertical Displacement values and Annotated Images. Vertical Displacements are classified as Trip Hazard (>13 mm, 1/2 inch) and Normal according to 2010 ADA Standards for Accessible Design.

Demo of Scanning and Data Processing

Geo-visualization in ArcGIS Online

Fullscreen:  Sidewalk Management Demo (ArcGIS Online Web App

(Setting default at NCAT Campus, can switch to UWM and SDSU Campuses using the bookmark)

Sidewalk Public Reporting Platform*

*Enable Location Services

Annotated Sidewalk Segments

The demo sidewalk about 85 m long, on the University of Wisconsin, Milwaukee (UWM) campus at E Newport Ave and N Frederick Ave, Milwaukee, WI.

Three of the 54 joints are identified as Trip Hazards and marked with cyan wave lines.

Full image here

Comparison with Local Authority Works

Pointcloud2Orthoimage Tool


Elevation image

A tool for converting point cloud to orthoimage and elevation image

Current version support:

Code [Link] Point cloud [Link]


Yuhan Jiang, Sisi Han, Dapeng Li, Yong Bai, Mingzhu Wang, Automatic Concrete Sidewalk Deficiency Detection and Mapping with Deep Learning, Expert Systems with Applications, Volume 207, 2022, 117980, https://doi.org/10.1016/j.eswa.2022.117980