Detecting irregularity in videos using kernel estimation and KD trees
MULTIMEDIA '06 Proceedings of the 14th annual ACM international conference on Multimedia
Detecting Irregularities in Images and in Video
International Journal of Computer Vision
Scene duplicate detection from videos based on trajectories of feature points
Proceedings of the international workshop on Workshop on multimedia information retrieval
IEEE Transactions on Pattern Analysis and Machine Intelligence
IEEE Transactions on Pattern Analysis and Machine Intelligence
Local velocity-adapted motion events for spatio-temporal recognition
Computer Vision and Image Understanding
Unsupervised Learning of Human Action Categories Using Spatial-Temporal Words
International Journal of Computer Vision
Scene duplicate detection based on the pattern of discontinuities in feature point trajectories
MM '08 Proceedings of the 16th ACM international conference on Multimedia
Video event detection using motion relativity and visual relatedness
MM '08 Proceedings of the 16th ACM international conference on Multimedia
Contour-motion feature (CMF): A space-time approach for robust pedestrian detection
Pattern Recognition Letters
Occlusion Boundaries from Motion: Low-Level Detection and Mid-Level Reasoning
International Journal of Computer Vision
Local detection of occlusion boundaries in video
Image and Vision Computing
International Journal of Computer Vision
Sparse B-spline polynomial descriptors for human activity recognition
Image and Vision Computing
Speeding up spatio-temporal sliding-window search for efficient event detection in crowded videos
EiMM '09 Proceedings of the 1st ACM international workshop on Events in multimedia
Spatio-temporal shape contexts for human action retrieval
IMCE '09 Proceedings of the 1st international workshop on Interactive multimedia for consumer electronics
Hierarchical space-time model enabling efficient search for human actions
IEEE Transactions on Circuits and Systems for Video Technology
Viewpoint manifolds for action recognition
Journal on Image and Video Processing - Special issue on video-based modeling, analysis, and recognition of human motion
IEEE Transactions on Systems, Man, and Cybernetics, Part C: Applications and Reviews
Human activity recognition based on the blob features
ICME'09 Proceedings of the 2009 IEEE international conference on Multimedia and Expo
Human behavior analysis based on a new motion descriptor
IEEE Transactions on Circuits and Systems for Video Technology
Volumetric Features for Video Event Detection
International Journal of Computer Vision
Gesture recognition under small sample size
ACCV'07 Proceedings of the 8th Asian conference on Computer vision - Volume Part I
Combined object detection and segmentation by using space-time patches
ACCV'07 Proceedings of the 8th Asian conference on Computer vision - Volume Part I
Action recognition with semi-global characteristics and hidden Markov models
ACIVS'07 Proceedings of the 9th international conference on Advanced concepts for intelligent vision systems
Multiple cue integrated action detection
HCI'07 Proceedings of the 2007 IEEE international conference on Human-computer interaction
Learning actions using robust string kernels
Proceedings of the 2nd conference on Human motion: understanding, modeling, capture and animation
Dynamic textures for human movement recognition
Proceedings of the ACM International Conference on Image and Video Retrieval
Feature detector and descriptor evaluation in human action recognition
Proceedings of the ACM International Conference on Image and Video Retrieval
Exceptional motion frames detection by means of spatiotemporal region of interest features
ICIP'09 Proceedings of the 16th IEEE international conference on Image processing
Capturing human activity by a curve
ICIP'09 Proceedings of the 16th IEEE international conference on Image processing
Advances in view-invariant human motion analysis: a review
IEEE Transactions on Systems, Man, and Cybernetics, Part C: Applications and Reviews
Human action recognition using ordinal measure of accumulated motion
EURASIP Journal on Advances in Signal Processing - Special issue on video analysis for human behavior understanding
Applications of a simple characterization of human gait in surveillance
IEEE Transactions on Systems, Man, and Cybernetics, Part B: Cybernetics - Special issue on gait analysis
Modeling the temporal extent of actions
ECCV'10 Proceedings of the 11th European conference on Computer vision: Part I
Graphical framework for action recognition using temporally dense STIPs
WMVC'09 Proceedings of the 2009 international conference on Motion and video computing
Human activity analysis: A review
ACM Computing Surveys (CSUR)
Novel kernel-based recognizers of human actions
EURASIP Journal on Advances in Signal Processing - Special issue on video analysis for human behavior understanding
Human activity recognition: a scheme using multiple cues
ISVC'10 Proceedings of the 6th international conference on Advances in visual computing - Volume Part II
Unsupervised action classification using space-time link analysis
Journal on Image and Video Processing
Human detection in video over large viewpoint changes
ACCV'10 Proceedings of the 10th Asian conference on Computer vision - Volume Part II
A tuned eigenspace technique for articulated motion recognition
ECCV'06 Proceedings of the 9th European conference on Computer Vision - Volume Part I
Recognition and segmentation of 3-d human action using HMM and multi-class adaboost
ECCV'06 Proceedings of the 9th European conference on Computer Vision - Volume Part IV
Relevance feedback for real-world human action retrieval
Pattern Recognition Letters
Aligning sequences and actions by maximizing space-time correlations
ECCV'06 Proceedings of the 9th European conference on Computer Vision - Volume Part III
3D human action recognition using spatio-temporal motion templates
ICCV'05 Proceedings of the 2005 international conference on Computer Vision in Human-Computer Interaction
Part-based motion descriptor image for human action recognition
Pattern Recognition
Combined classifiers for action recognition
IWICPAS'06 Proceedings of the 2006 Advances in Machine Vision, Image Processing, and Pattern Analysis international conference on Intelligent Computing in Pattern Analysis/Synthesis
Shift-Invariant dynamic texture recognition
ECCV'06 Proceedings of the 9th European conference on Computer Vision - Volume Part II
Bag of spatio-temporal synonym sets for human action recognition
MMM'10 Proceedings of the 16th international conference on Advances in Multimedia Modeling
Efficient human action detection using a transferable distance function
ACCV'09 Proceedings of the 9th Asian conference on Computer Vision - Volume Part II
A similarity measure between videos using alignment, graphical and speech features
Expert Systems with Applications: An International Journal
Using SAX representation for human action recognition
Journal of Visual Communication and Image Representation
Exploiting eye-hand coordination to detect grasping movements
Image and Vision Computing
CYKLS: detect pedestrian's dart focusing on an appearance change
ECCV'12 Proceedings of the 12th international conference on Computer Vision - Volume 2
Fusion of human posture features for continuous action recognition
ECCV'10 Proceedings of the 11th European conference on Trends and Topics in Computer Vision - Volume Part I
Large scale continuous visual event recognition using max-margin Hough transformation framework
Computer Vision and Image Understanding
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We introduce a behavior-based similarity measure which tells us whether two different space-time intensity patterns of two different video segments could have resulted from a similar underlying motion field. This is done directly from the intensity information, without explicitly computing the underlying motions. Such a measure allows us to detect similarity between video segments of differently dressed people performing the same type of activity. It requires no foreground/background segmentation, no prior learning of activities, and no motion estimation or tracking. Using this behavior-based similarity measure, we extend the notion of 2-dimensional image correlation into the3-dimensional space-time volume, thus allowing to correlate dynamic behaviors and actions. Small space-time video segments (small video clips) are "correlated" against entire video sequences in all three dimensions (x,y, and t). Peak correlation values correspond to video locations with similar dynamic behaviors. Our approach can detect very complex behaviors in video sequences (e.g., ballet movements, pool dives, running water), even when multiple complex activities occur simultaneously within the field-of-view of the camera.