Current advanced vision systems aiming for activity recognition are strongly dependant on the locations of particular scenes, thereby restricting the semantic properties of the places where such events occur. Thus, a task for automatic and generic categorization of semantic regions is demanded in the field.
![Automatic region labeling on intercity urban scenarios Automatic region labeling on intercity urban scenarios](http://www.micc.unifi.it/vim/wp-content/uploads/2010/05/fernandez_tena_automatic_region_labeling.jpg)
Automatic region labeling on intercity urban scenarios
Carles Fernàndez Tena presents a method to perform automatic region labeling on intercity urban scenarios, based on the trajectories of pedestrians and vehicles observed by public webcams. As a result, the system divides the scenario into regions like crosswalks, sidewalks, roads, or waiting zones. Prior information is first modeled using a simple feature-based approach, and additional domain knowledge helps constraining spatial coherence to the results, by means of a MAP-MRF inference process. A progressive and thorough experimental validation will be presented, discussing a series of complementary steps that help enhancing the proposed framework.