Media type: E-Article Title: Photogrammetric Image Analysis: Event Detection Based on a Pedestrian Interaction Graph Using Hidden Markov Models Contributor: Burkert, Florian; Butenuth, Matthias imprint: Springer Berlin Heidelberg, 2011 Published in: Photogrammetric Image Analysis Language: Not determined DOI: 10.1007/978-3-642-24393-6_23 ISSN: 0302-9743; 1611-3349 Origination: Footnote: