1241 search results - page 3 / 249 » On detecting space-time clusters |
CVPR
2009
IEEE
15 years 12 days ago
2009
IEEE
We propose a space-time Markov Random Field (MRF)
model to detect abnormal activities in video. The nodes in
the MRF graph correspond to a grid of local regions in the
video fra...
VTC
2007
IEEE
13 years 11 months ago
2007
IEEE
Abstract— In this paper we consider serially concatenated and iteratively decoded Irregular Variable Length Coding (IrVLC) combined with precoded Differential Space-Time Spreadin...
VTC
2007
IEEE
13 years 11 months ago
2007
IEEE
Abstract – Jointly optimised iterative source- and channel-decoding is used for enhancing the error resilience of the Adaptive Multi Rate WideBand (AMR-WB) speech codec. The resu...
TSP
2008
13 years 5 months ago
2008
For orthogonal space-time block coded orthogonal frequency division multiplexing (OSTBC-OFDM) systems, many of the existing blind detection and channel estimation methods rely on t...
ACCV
2007
Springer
13 years 11 months ago
2007
Springer
This paper presents a method for classifying the direction of movement and for segmenting objects simultaneously using features of space-time patches. Our approach uses vector quan...