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EnglishWe present a background subtraction approach aimed at efficiency and robustness to common source of disturbance such as gradual and sudden illumination changes, camera gain and exposure variations, noise. At each new frame, a non-parametric mixture-based probabilistic clustering is performed to segment the image into changed and unchanged pixels with respect to a fixed background. A two-components mixture, a two-dimensional discrete feature space, a non-parametric model for the components likelihood and a proper initial guess are the key ingredients of this novel algorithm that, besides dealing effectively with the discrimination of photometric and semantic changes, exhibits very high computational efficiency. Experiments are presented, proving the achieved state-of-the art robustness-efficiency trade-off.
| Titolo: | Background Subtraction by Non-parametric Probabilistic Clustering |
| Autore/i: | LANZA, ALESSANDRO; SALTI, SAMUELE; DI STEFANO, LUIGI |
| Autore/i Unibo: | |
| Anno: | 2011 |
| Titolo del libro: | Proceedings of the 8th IEEE International Conference on Advanced Video and Signal-Based Surveillance (AVSS) |
| Pagina iniziale: | 243 |
| Pagina finale: | 248 |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1109/AVSS.2011.6027330 |
| Abstract: | We present a background subtraction approach aimed at efficiency and robustness to common source of disturbance such as gradual and sudden illumination changes, camera gain and exposure variations, noise. At each new frame, a non-parametric mixture-based probabilistic clustering is performed to segment the image into changed and unchanged pixels with respect to a fixed background. A two-components mixture, a two-dimensional discrete feature space, a non-parametric model for the components likelihood and a proper initial guess are the key ingredients of this novel algorithm that, besides dealing effectively with the discrimination of photometric and semantic changes, exhibits very high computational efficiency. Experiments are presented, proving the achieved state-of-the art robustness-efficiency trade-off. |
| Data prodotto definitivo in UGOV: | 18-giu-2013 |
| Appare nelle tipologie: | 4.01 Contributo in Atti di convegno |
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