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ACM Transactions on Spatial Algorithms and Systems - Inaugural Issue, Volume 1 Issue 1, August 2015

Multirow Boundary-Labeling Algorithms for Panorama Images
Andreas Gemsa, Jan-Henrik Haunert, Martin Nöllenburg
Article No.: 1
DOI: 10.1145/2794299

Boundary labeling deals with placing annotations for objects in an image on the boundary of that image. This problem occurs frequently in situations in which placing labels directly in the image is impossible or produces too much visual clutter....

A Server-Assigned Spatial Crowdsourcing Framework
Hien To, Cyrus Shahabi, Leyla Kazemi
Article No.: 2
DOI: 10.1145/2729713

With the popularity of mobile devices, spatial crowdsourcing is rising as a new framework that enables human workers to solve tasks in the physical world. With spatial crowdsourcing, the goal is to crowdsource a set of spatiotemporal tasks...

A Path-Based Distance for Street Map Comparison
Mahmuda Ahmed, Brittany Terese Fasy, Kyle S. Hickmann, Carola Wenk
Article No.: 3
DOI: 10.1145/2729977

Comparing two geometric graphs embedded in space is important in the field of transportation network analysis. Given street maps of the same city collected from different sources, researchers often need to know how and where they differ. However,...

Generating Moving Regions from Snapshots of Complex Regions
Mark Mckennney, Roger Frye
Article No.: 4
DOI: 10.1145/2774220

Moving regions are a form of spatiotemporal data in which a region changes in shape and/or position over time. In many fields, moving regions representing real-world phenomena are collected using sensors that take temporally encoded snapshots of...