Title
Acquiring Semantics Induced Topology In Urban Environments
Abstract
Methods for acquisition and maintenance of an environment model are central to a broad class of mobility and navigation problems. Towards this end, various metric, topological or hybrid models have been proposed. Due to recent advances in sensing and recognition, acquisition of semantic models of the environments have gained increased interest in the community. In this work, we will demonstrate a capability of using weak semantic models of the environment to induce different topological models, capturing the spatial semantics of the environment at different levels. In the first stage of the model acquisition, we propose to compute semantic layout of the street scenes imagery by recognizing and segmenting buildings, roads, sky, cars and trees. Given such semantic layout, we propose an informative feature characterizing the layout and train a classifier to recognize street intersections in challenging urban inner city scenes. We also show how the evidence of different semantic concepts can induce useful topological representation of the environment, which can aid navigation and localization tasks. To demonstrate the approach, we carry out experiments on a challenging dataset of omnidirectional inner city street views and report the performance of both semantic segmentation and intersection classification.
Year
DOI
Venue
2012
10.1109/ICRA.2012.6225282
2012 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION (ICRA)
Keywords
Field
DocType
semantics,cars,feature extraction,semantic model,labeling,image classification,sky,boosting,layout,image segmentation,computational semantics,visualization
Visualization,Segmentation,Feature extraction,Image segmentation,Artificial intelligence,Boosting (machine learning),Engineering,Contextual image classification,Semantics,Semantic computing,Machine learning
Conference
Volume
Issue
ISSN
2012
1
1050-4729
Citations 
PageRank 
References 
10
4.22
26
Authors
2
Name
Order
Citations
PageRank
Gautam Singh11039.31
Jana Kosecká21523129.85