Seminar Details
2009-11-03 (14.00) : Multi-sensored vision for autonomous production of personalized video summaries
At Euler building
Organized by Mathematical Engineering
Speaker :
De Vleeschouwer, Christophe
Abstract :
Today's media consumption evolves towards increased user-centric adaptation
of contents, to meet the requirements of users having different expectations
in terms of story-telling, and heterogeneous constraints in terms of access
devices. Individuals and organizations want to access dedicated contents
through a personalized service that is able to provide what they are
interested in, at the time when they want it, and through the distribution
channel of their choice. In this talk, we explain how it is possible to
address this challenge by merging computer vision tools with optimization
and resource allocation mechanisms, to automate the collection and
distribution of audiovisual contents.
In a typical application scenario, the sensor network for media acquisition
is composed of (microphones and) cameras, which, for example, cover a
basket-ball field. Distributed analysis and interpretation of the scene are
exploited to decide what to show or not to show about the event, so as to
produce a video composed of a valuable subset from the streams provided by
each camera. The process involves numerous integrated technologies and
methodologies, including but not limited to automatic scene analysis, camera
viewpoint selection and control, and generation of summaries through automatic
organization of stories. Considering the problem in a multi-camera
environment not only mitigates the difficulty of scene understanding caused
by reflection, occlusion and shadow in the single view case, but also offers
higher flexibility in producing visually pleasant video reports. In final,
multi-camera autonomous production/summarization can provide practical
solutions to a wide range of applications, such as personalized access to
local sport events through a web portal or a mobile hand-set, cost-effective
and fully automated production of content dedicated to small-audience, e.g.
souvenirs DVD, university lectures, conference, etc, and interactive
browsing and automated summarization for video surveillance.