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Displaying 1-6 out of 6 total
Motion vector refinement for FRUC using saliency and segmentation
Found in: Multimedia and Expo, IEEE International Conference on
By Natan Jacobson, Yen-Lin Lee, Vijay Mahadevan, Nuno Vasconcelos, Truong Q. Nguyen
Issue Date:July 2010
pp. 778-783
Motion-Compensated Frame Interpolation (MCFI) is a technique used extensively for increasing the temporal frequency of a video sequence. In order to obtain a high quality interpolation, the motion field between frames must be well-estimated. However, many ...
 
On the design of robust classifiers for computer vision
Found in: Computer Vision and Pattern Recognition, IEEE Computer Society Conference on
By Hamed Masnadi-Shirazi, Vijay Mahadevan, Nuno Vasconcelos
Issue Date:June 2010
pp. 779-786
The design of robust classifiers, which can contend with the noisy and outlier ridden datasets typical of computer vision, is studied. It is argued that such robustness requires loss functions that penalize both large positive and negative margins. The pro...
 
Anomaly detection in crowded scenes
Found in: Computer Vision and Pattern Recognition, IEEE Computer Society Conference on
By Vijay Mahadevan, Weixin Li, Viral Bhalodia, Nuno Vasconcelos
Issue Date:June 2010
pp. 1975-1981
A novel framework for anomaly detection in crowded scenes is presented. Three properties are identified as important for the design of a localized video representation suitable for anomaly detection in such scenes: 1) joint modeling of appearance and dynam...
 
Spatiotemporal Saliency in Dynamic Scenes
Found in: IEEE Transactions on Pattern Analysis and Machine Intelligence
By Vijay Mahadevan, Nuno Vasconcelos
Issue Date:January 2010
pp. 171-177
A spatiotemporal saliency algorithm based on a center-surround framework is proposed. The algorithm is inspired by biological mechanisms of motion-based perceptual grouping and extends a discriminant formulation of center-surround saliency previously propo...
 
Background subtraction in highly dynamic scenes
Found in: Computer Vision and Pattern Recognition, IEEE Computer Society Conference on
By Vijay Mahadevan, Nuno Vasconcelos
Issue Date:June 2008
pp. 1-6
A new algorithm is proposed for background subtraction in highly dynamic scenes. Background subtraction is equated to the dual problem of saliency detection: background points are those considered not salient by suitable comparison of object and background...
 
Anomaly Detection and Localization in Crowded Scenes
Found in: IEEE Transactions on Pattern Analysis and Machine Intelligence
By Weixin Li,Vijay Mahadevan,Nuno Vasconcelos
Issue Date:January 2014
pp. 18-32
The detection and localization of anomalous behaviors in crowded scenes is considered, and a joint detector of temporal and spatial anomalies is proposed. The proposed detector is based on a video representation that accounts for both appearance and dynami...
 
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