A CityGML extension for 3D modeling of pedestrian mobility space

Abstract

This paper presents a conceptual model of pedestrian mobility spaces in 3D city models. While conceptual models can be specified in various ways, we use standard elements of CityGML and an Application Domain Extension (ADE): The Pedestrian ADE extends CityGML 3.0 to incorporate key parameters related to the physical, legal, and regulatory aspects of pedestrian mobility environments. For this, the extension introduces new feature classes for vertical passages such as stairs and elevators, and adds attributes to existing CityGML classes to represent pedestrian-specific characteristics. The conceptual model is also implemented for demonstration and validation: A real-world case study in Melbour..