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
Orthoimage
Elevation image
A tool for converting point cloud to orthoimage and elevation image
Current version support:
Load LAS file and export PCD file and CSV file (in case CentOS do not support Open3D).
Automatically align point cloud to a plane surface.
Use separate CPUs to process R, G, B, and elevation channels.
Code [Link] Point cloud [Link]
Reference
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