Shape Matching and Object Recognition Using Shape Contexts
IEEE Transactions on Pattern Analysis and Machine Intelligence
From Gaze to Focus of Attention
VISUAL '99 Proceedings of the Third International Conference on Visual Information and Information Systems
Wide-Range, Person- and Illumination-Insensitive Head Orientation Estimation
FG '00 Proceedings of the Fourth IEEE International Conference on Automatic Face and Gesture Recognition 2000
Comparative Study of Coarse Head Pose Estimation
MOTION '02 Proceedings of the Workshop on Motion and Video Computing
Distinctive Image Features from Scale-Invariant Keypoints
International Journal of Computer Vision
Multi-View Head Pose Estimation using Neural Networks
CRV '05 Proceedings of the 2nd Canadian conference on Computer and Robot Vision
Sparse Bayesian Regression for Head Pose Estimation
ICPR '06 Proceedings of the 18th International Conference on Pattern Recognition - Volume 03
Large head movement tracking using sift-based registration
Proceedings of the 15th international conference on Multimedia
Speeded-Up Robust Features (SURF)
Computer Vision and Image Understanding
Visual Focus of Attention in Dynamic Meeting Scenarios
MLMI '08 Proceedings of the 5th international workshop on Machine Learning for Multimodal Interaction
Head Pose Estimation in Computer Vision: A Survey
IEEE Transactions on Pattern Analysis and Machine Intelligence
An iterative image registration technique with an application to stereo vision
IJCAI'81 Proceedings of the 7th international joint conference on Artificial intelligence - Volume 2
ICVS '09 Proceedings of the 7th International Conference on Computer Vision Systems: Computer Vision Systems
Multiperson Visual Focus of Attention from Head Pose and Meeting Contextual Cues
IEEE Transactions on Pattern Analysis and Machine Intelligence
JSAI'05 Proceedings of the 2005 international conference on New Frontiers in Artificial Intelligence
Pedestrian attribute analysis using a top-view camera in a public space
MMM'12 Proceedings of the 18th international conference on Advances in Multimedia Modeling
People orientation recognition by mixtures of wrapped distributions on random trees
ECCV'12 Proceedings of the 12th European conference on Computer Vision - Volume Part V
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This paper presents a method to estimate human body and head orientation change around yaw axis from low-resolution data. Body orientation is calculated by using Shape Context algorithm to match the outline of upper body with predefined shape templates within the ranges of 22.5 degrees. Then, motion flow vectors of SIFT features around head region are utilized to estimate the change in head orientation. Body orientation change and head orientation change can be added to the initial orientation to compute the new visual focus of attention of the person. Experimental results are presented to prove the effectiveness of the proposed method. Successful estimations, which are supported by a user study, were obtained from low-resolution data under various head pose articulations.