Digital twins (DTs) have been found useful in manufacturing, construction, and maintenance.
Adapting DTs to serve cities, the question arises of what an urban digital twin should contain …

Voxel-based data structures, algorithms, frameworks, and interfaces have been used in
computer graphics and many other applications for decades. There is a general necessity to …

With the gaining popularity and proliferation of building information modeling (BIM)
techniques, a growing demand emerges for accurate, up-to-date and semantically-enriched …

In spatial science and urban applications,“space" is presented by multiple disciplines as a
notion referencing our living environment. Space is used as a general term to help …

In addition to geometric accuracy, topological information, appearance and georeferenced
data, semantic capabilities are key strengths of digital 3D city models. This provides the …

Abstract Three-dimensional (3D) discrete grid systems have been widely applied to voxel-
based modeling and the management of 3D data. In the existing rigid grid structure (RGS) …

Visibility analysis plays a vital role in the design and placing of traffic signs in the urban
street environment. This work investigates the occlusion detection of traffic lights and traffic …

Many of the tasks planned for future generation Mars rovers rely heavily on having accurate
knowledge of the rover's location in a Martian body-fixed coordinate system. Current …

Visibility analyses are one of the fundamental geospatial processing tasks applied in various
fields. Recent technological advancements have accelerated viewshed calculations and …

We propose a method for analysing landmark visibility from a pedestrian's perspective. A
case study is performed in Kraków, a city with many architectural monuments, where …