STEREO−BASED ELLIPTICAL HEAD TRACKING (ThuPmOR11)
نویسندگان
چکیده
Abstract : A novel algorithm for head−tracking based on stereo is presented in this paper. Employing stereo vision makes the tracker robust to many factors such as clutter, color and lighting variations, that affect contemporary head trackers. The head is modeled as an ellipse and tracking is performed on the foreground obtained by modeling depth. This is facilitated by using stereo vision. Further, we present a simple head size estimation technique that is critical for modeling considerable motion by the subject. The results obtained demonstrate the robustness of the head tracker and the accuracy of the head−size estimation technique. This would find extensive use in speaker tracking in smart rooms.
منابع مشابه
Automatic Detection and Tracking of Human Heads Using an Active Stereo Vision System
A head tracking system for automatically detecting and tracking human heads in complex backgrounds is developed. In this paper, two issues are addressed: the detection of human heads and the development of a head tracking system. First, based on an elliptical model for the human head, we propose a Maximum Likelihood (ML) detector to reliably locate human heads in images having complex backgroun...
متن کاملThe Influence of Head Tracking and Stereo on User Performance with Non-Isomorphic 3D Rotation
We present an experimental study that explores how head tracking and stereo viewing affect user performance when rotating 3D virtual objects using isomorphic and non-isomorphic rotation techniques. Our experiment compares isomorphic with non-isomorphic rotation utilizing four different display modes (no head tracking/no stereo, head tracking/no stereo, no head tracking/stereo, and head tracking...
متن کاملStereo-Based Head Pose Tracking Using Iterative Closest Point and Normal Flow Constraint
In this text, we present two stereo-based head tracking techniques along with a fast 3D model acquisition system. The first tracking technique is a robust implementation of stereo-based head tracking designed for interactive environments with uncontrolled lighting. We integrate fast face detection and drift reduction algorithms with a gradient-based stereo rigid motion tracking technique. Our s...
متن کاملFast Stereo-Based Head Tracking for Interactive Environments
We present a robust implementation of stereo-based head tracking designed for interactive environments with uncontrolled lighting. We integrate fast face detection and drift reduction algorithms with a gradient-based stereo rigid motion tracking technique. Our system can automatically segment and track a user’s head under large rotation and illumination variations. Precision and usability of ou...
متن کاملFace Tracking System Based on Color, Stereovision and Elliptical Shape Features
In this paper we present a vision system that performs tracking a human face in 3D. To achieve this we combine color and stereo cues to find likely image regions where face may exist. A greedy search algorithm examines for a face candidate focusing the action around the position of the face which was detected in the previous time step. The aim of the search is to find the best-fit head ellipse....
متن کامل