Proceedings of the ACM multimedia 2012 workshop on Geotagging and its applications in multimedia, GeoMM@ACM Multimedia 2012, Nara, Japan, October 29, 2012

In recent years, the rise of widespread use of GPS sensors and the increasing availability of open geographical databases has motivated a large volume of work on geotagging. The increase in the use of geotagging and improvements in location based multimedia open up a new dimension for the description, organization and manipulation of multimedia data. This new dimension radically expands the usefulness of multimedia data both for daily users of the internet and social networking sites as well as for experts in particular application scenarios. GeoMM 2014 is the third ACM workshop on Geotagging and its Applications in Multimedia. The first workshop was held in 2012 at Nara, Japan, which successfully built a forum for the presentation and synthesis of vision and insight from leading experts. The second workshop was help in 2013 at Barcelona, Spain, which extended the platform to more audience and encouraged practitioners on the developing directions of geotagging research related to multimedia. Following the success in 2012 and 2013, GeoMM 2014 aims to bring together cutting-edge research in geotagging as well as novel applications related to location based service and multimedia. The workshop aims to facilitate in-depth discussions, the sharing of existing tools, and ultimately the enhancement of research efforts in this area. Six papers are presented in GeoMM'14 covering topics including, but not limited to, innovative models of geotagging and interesting phenomenon in geotagging: Chen et al discuss how to use social media based profiling for business location analysis. Almajed and Boutell explore capture time classification of mobile sunset photos with spatiotemporal cues. Phan et al consider collaborative recommendation of photo taking geolocations. Ferracani et al propose to enrich social network trace for urban computing. Zheng et al show that we can infer home location from user's photo collections. At last, we invite the organizers of MediaEval Placing Task to introduce this exciting challenge with large scale datasets. Moreover, we are proud to host a number of keynote speakers including Dr. David J. Crandall, Dr. Martha Larson, Dr. Jia Li, Dr. Mubarak Shah, and Dr. David Ayman Shamma, who are the leading experts in their research fields. We believe their talks will provide cutting edge overviews of the state of the art in this field.