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Displaying 1-6 out of 6 total
Tracking Multiple People with Illumination Maps
Found in: Pattern Recognition, International Conference on
By Gloria Zen, Oswald Lanz, Stefano Messelodi, Elisa Ricci
Issue Date:August 2010
pp. 3484-3487
We address the problem of multiple people tracking under non-homogenous and time-varying illumination conditions. We propose a unified framework for jointly estimating the position of the targets and their illumination conditions. For each target multiple ...
A Sampling Algorithm for Occlusion Robust Multi Target Detection
Found in: Advanced Video and Signal Based Surveillance, IEEE Conference on
By Oswald Lanz, Stefano Messelodi
Issue Date:September 2009
pp. 346-351
Bayesian methods for visual tracking, with the particle filter as its most prominent instance, have proven to work effectively in the presence of clutter, occlusions, and dynamic background. When applied to track a variable number of targets, however, they...
An Efficient Vehicle Queue Detection System Based on Image Processing
Found in: Image Analysis and Processing, International Conference on
By Michele Zanin, Stefano Messelodi, Carla Maria Modena
Issue Date:September 2003
pp. 232
This paper describes a method for the real-time measurement of vehicle queue parameters in a video-based traffic monitoring experimental system. The method proposed here is based on vehicle presence detection and movement analysis in video sequences acquir...
Detection of Polygonal Frames in Complex Document Images
Found in: Database and Expert Systems Applications, International Workshop on
By Stefano Messelodi, Carla Maria Modena
Issue Date:September 1999
pp. 534
A robust method for the localization of frames within document images is presented. It aims at detecting regions delimited by closed polygonal lines or edges in complex color, gray-level or binary images. In order to reduce computation time and to return o...
A smart watch-based gesture recognition system for assisting people with visual impairments
Found in: Proceedings of the 3rd ACM international workshop on Interactive multimedia on mobile & portable devices (IMMPD '13)
By Carla Mara Modena, Elisa Ricci, Lorenzo Porzi, Stefano Messelodi
Issue Date:October 2013
pp. 19-24
Modern mobile devices provide several functionalities and new ones are being added at a breakneck pace. Unfortunately browsing the menu and accessing the functions of a mobile phone is not a trivial task for visual impaired users. Low vision people typical...
Tracking for context extraction in athletic events
Found in: Proceedings of the 2010 ACM workshop on Social, adaptive and personalized multimedia interaction and access (SAPMIA '10)
By Aristodemos Pnevmatikakis, Carla Maria Modena, Claudio Andreatta, Francesco Tobia, Nikos Katsarakis, Paul Chippendale, Stefano Messelodi
Issue Date:October 2010
pp. 67-72
Personalisation of large scale athletic events requires camera-specific annotations to provide for reasoning about incidents being best viewed by specific cameras. This needs an automatic system for annotating athletes on the video streams, to be achieved ...