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ACM Transactions on Spatial Algorithms and Systems (TSAS), Volume 3 Issue 3, November 2017

Grid-Based Method for GPS Route Analysis for Retrieval
Radu Mariescu-Istodor, Pasi Fränti
Article No.: 8
DOI: 10.1145/3125634

Grids are commonly used as histograms to process spatial data in order to detect frequent patterns, predict destinations, or to infer popular places. However, they have not been previously used for GPS trajectory similarity searches or retrieval...

Measuring the Significance of Spatiotemporal Co-Occurrences
Berkay Aydin, Ahmet Kucuk, Rafal A. Angryk, Petrus C. Martens
Article No.: 9
DOI: 10.1145/3139351

Spatiotemporal co-occurrences are the appearances of spatial and temporal overlap relationships among trajectory-based spatiotemporal instances with region-based geometric representations. Assessing the significance of spatiotemporal...

Efficient Visibility Determination in Urban Scenes Considering Terrain Information
M. D. Robles-Ortega, L. Ortega, F. R. Feito
Article No.: 10
DOI: 10.1145/3152536

In this article, we introduce a novel occlusion culling method working on the server side to provide real-time navigation on web-based systems. Nowadays, virtual navigation in urban environments is a rising trend in several contexts such as...