Mean Shift: A Robust Approach Toward Feature Space Analysis
IEEE Transactions on Pattern Analysis and Machine Intelligence
ECCV '02 Proceedings of the 7th European Conference on Computer Vision-Part IV
Location Based Services
Web-a-where: geotagging web content
Proceedings of the 27th annual international ACM SIGIR conference on Research and development in information retrieval
LORE: an infrastructure to support location-aware services
IBM Journal of Research and Development
Proceedings of the 15th international conference on World Wide Web
Extracting Semantic Location from Outdoor Positioning Systems
MDM '06 Proceedings of the 7th International Conference on Mobile Data Management
Beyond Bags of Features: Spatial Pyramid Matching for Recognizing Natural Scene Categories
CVPR '06 Proceedings of the 2006 IEEE Computer Society Conference on Computer Vision and Pattern Recognition - Volume 2
Generating summaries and visualization for large collections of geo-referenced photographs
MIR '06 Proceedings of the 8th ACM international workshop on Multimedia information retrieval
Why we tag: motivations for annotation in mobile and online media
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
The Google Similarity Distance
IEEE Transactions on Knowledge and Data Engineering
Proceedings of the international workshop on Workshop on multimedia information retrieval
Proceedings of the 15th international conference on Multimedia
Image retrieval: Ideas, influences, and trends of the new age
ACM Computing Surveys (CSUR)
Inferring generic activities and events from image content and bags of geo-tags
CIVR '08 Proceedings of the 2008 international conference on Content-based image and video retrieval
World-scale mining of objects and events from community photo collections
CIVR '08 Proceedings of the 2008 international conference on Content-based image and video retrieval
Leveraging probabilistic season and location context models for scene understanding
CIVR '08 Proceedings of the 2008 international conference on Content-based image and video retrieval
Event recognition: viewing the world with a third eye
MM '08 Proceedings of the 16th ACM international conference on Multimedia
Proceedings of the 18th international conference on World wide web
WordNet: similarity - measuring the relatedness of concepts
AAAI'04 Proceedings of the 19th national conference on Artifical intelligence
Rich location-driven tag cloud suggestions based on public, community, and personal sources
Proceedings of the 1st ACM international workshop on Connected multimedia
TweetPhoto: photos from news tweets
Proceedings of the 20th International Conference on Advances in Geographic Information Systems
Multifaceted conceptual image indexing on the world wide web
Information Processing and Management: an International Journal
A virtual globe tool for searching and visualizing geo-referenced media resources in social networks
Multimedia Tools and Applications
City-view image retrieval leveraging check-in data
Proceedings of the 2nd ACM international workshop on Geotagging and its applications in multimedia
Where should I stand? Learning based human position recommendation for mobile photographing
Multimedia Tools and Applications
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Geotagging has become a recent phenomenon that allows users to visualize and manage photo collections in many new and interesting ways. Unfortunately, manual geotagging of a large collection of pictures on the globe is still a time-consuming and laborious task even though geotagging devices are gradually being adopted. At the same time, there exist billions of legacy pictures taken before the onset of geotagging. In recent times, large collections of Web images have been found to facilitate a number of image understanding tasks including geolocation estimation. In this paper, we leverage user tags along with image content to infer the geolocation of images. Our model builds upon the fact that the visual content and user tags of pictures can together provide significant hints about their geolocations. Using a collection of over a million geotagged pictures, we build location probability maps for commonly used image tags over the entire globe. These maps reflect the collective picture-taking and tagging behaviors of thousands of users from all over the world. We further study the geographic entropy and frequency of user tags as geo-inference features and investigate the usefulness of using these features for selecting geographically meaningful annotations. On the other hand, visual content matching is performed using multiple feature descriptors including tiny images, color histograms, GIST features, and bags of textons. Finally, visual KNN matching based geographic mapping scheme is integrated with tag location probability maps to form a strong geo-inference engine. Experiments have shown improvements over geolocation inference performed using either modality alone.