即時高速運動物體之三維軌跡重建系統設計與實現

Design and Implementation of A Real-Time3D Trajectory Reconstruction System for High-Speed Moving Objects

洪晟翔(HONG CHENG XIANG)

指導教授 ： 李正宇

亞洲大學/資訊學院/生物資訊學系碩士班/碩士(2010年)

摘要

目前常見的三維重建技術多應用於靜態物體上。為了提升三維重建的應用範圍，提出並實現了一種基於立體視覺原理的高速運動物體之軌跡還原與測量方法。該方法利用兩台高速相機同時拍攝正在運動中的物體，並根據立體視覺演算法，重建其連續運動中之物體的中心座標，並於最後提出軌跡重建系統設計過程中遇到之困難與解決方案。

關鍵字

機械視覺 ； 三維重建 ； 立體視覺

並列摘要

Among 3D reconstruction techniques, most of them are for still objects. We design and implement a ready-to-use system for 3D trajectory reconstruction of high speed moving objects. Hardware camera synchronization, multi-threading programming, 3D reconstruction camera model (rather than pin-hole model) are used for enhancing performance in speed and in accuracy to fulfill the requirement in high speed environment. This implementation is especially useful for computer-assisted evaluation in game study, sport medicine, and physical therapy.

並列關鍵字

Machine vision ； 3D reconstruction ； 3D vision

參考文獻

[2] Y. Kawata, N. Niki, H. Ohmatsu, R.Kakinuma, K. Eguchi, M. Kaneko, N. Moriyama, “Quantitative surface characterization pulmonary nodules based on thin-section CT image”, IEEE Trans. Nuclear Science, vol.45, p2132~2138, 1998.

[5] K. M. Cheung, “Visual Hull Construction, Alignment and Re nement for Human Kinematic Modeling, Motion Tracking and Rendering”, A Dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in ROBOTICS , 2003.10.

[9] Fallavollita, P. and Cheriet, F., “Optimal 3D reconstruction of coronary arteries for 3D clinical assessment”, Computerized Medical Imaging and Graphics, 32, pp.476-487, 2008.

[10] Pollard, S.B., Mayhew, J.E.W., and Frisby, J.P., ”PMF A Stereo Correspondence Algorithm Using a Disparity Gradient Limit”, Perception, pp.449-470, 1985. 1

[13] Otsu, N., “A threshold selection method from gray-level histograms”, IEEE Transactions on Systems, Man and Cybernetics, Vol.9, No. 1, pp.62-66, 1979.