單相機高速運動物體3D軌跡重建的新方法

A New Approach for 3D Trajectory Reconstruction of High-Speed Moving Objects using Single Camera

謝宗倫(Xie Zong-Lun)

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方式是利用雙相機或多相機取得多個二維影像座標來重建出三維世界座標；使用單一相機來重建三維世界座標，不僅可降低校正與環境架設的困難、增加系統的實用性，更可以降低開發成本與時間。在本篇論文中，我們提出新的三維重建方法，是利用單相機取得球體影像的二維座標和球體在影像中的幾何面積等資訊，重建高速球體在三維世界座標中的移動軌跡。本研究對於低階的三維影像重建的應用有很高的實用性及效能成本比的優勢。

關鍵字

單相機 ； 三維重建 ； 軌跡重建 ； 幾何面積

並列摘要

In computer vision, most studies of three-dimensional reconstruction focus on using multiple cameras. However, there are some advantages in using single camera, e.g. lower system complexity, simpler calibration procedure, low cost, and shorter development time. In this study, we propose a new and simple approach for 3D trajectory reconstruction using single camera. In this approach, after calibration, the world coordinates of objects can be retrieved from given information of the object's image coordinates (X,Y) and its geometric area. The depth of objects can be found by a transformation of a quadratic function of object's geometric area and coordinates on image, and thus the trajectory of the moving objects can be reconstructed. This study is useful in practice for low-precision and low-cost 3D reconstruction applications in the sense of performance-cost ratio.

並列關鍵字

Single-Camera ； 3D reconstruction ； Trajectory reconstruction ； Geometric area

參考文獻

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