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Báo cáo hóa học: "Global Motion Model for Stereovision-Based Motion Analysis"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Global Motion Model for Stereovision-Based Motion Analysis | Hindawi Publishing Corporation EURASIP Journal on Applied Signal Processing Volume 2006 Article ID 53691 Pages 1-6 DOI 10.1155 ASP 2006 53691 Global Motion Model for Stereovision-Based Motion Analysis Jia Wang 1 Zhencheng Hu 2 Keiichi Uchimura 2 and Hanqing Lu1 1 National Laboratory of Pattern Recognition Institute of Automation Chinese Academy of Sciences 95 Zhongguancun East Road Beijing 100080 China 2 Department of Computer Science Faculty of Engineering Kumamoto University 2-39-1 Kurokami Kumamoto 860-8555 Japan Received 26 October 2005 Revised 11 January 2006 Accepted 21 January 2006 Recommended for Publication by Dimitrios Tzovaras An advantage of stereovision-based motion analysis is that the depth information is available thus motion can be estimated more precisely in 2.5D stereo coordinate system SCS constructed by the depth and the image coordinates. In this paper stereo global motion in SCS which is induced by 3D camera motion in real-world coordinate system WCS is parameterized by a five-parameter global motion model GMM . Based on such model global motion can be estimated and identified directly in SCS without knowing the physical parameters about camera motion and camera setup in WCS. The reconstructed global motion field accords with the spatial structure of the scene much better. Experiments on both synthetic data and real-world images illustrate its promising performance. Copyright 2006 Hindawi Publishing Corporation. All rights reserved. 1. INTRODUCTION The advantage of stereovision-based motion analysis is that the depth disparity information can be computed. Considering the depth information together with the image coordinates motion can be analyzed more precisely in a 2.5D space rather than the traditional 2D image plane. This paper by expressing the 2.5D space as stereo coordinate system SCS addresses the problem of global motion modeling in SCS. Global motion model GMM is commonly used to describe the effect of camera motion global motion .