基于单目体系的可见手重构算法研究

首先确立单相机加单平面镜的体系结构，然后研究在该体系下实现三维重构的基本理论和基本方法，具体探讨了以下4个关键问题：（1）手边沿的提取；（2）对应关系的获取；（3）3D重构的基本方法；（4）校准算法，通过揭示出空间物点在像平面上的投影、该物点的对称点在同一像平面上的投影、镜面以及该物点本身这四者之间的关系，得到三维重构的新方法，既便于理论分析，又便于程序设计；既使校准过程简单易行，又保证了三维重构的精度．

Research on 3D Reconstruction for Visible Hand Based on Single View

Rendering and displaying of a computer operator's hands in real time based on computer vision technique is one of the kernel problems in human-computer systems and virtual reality systems,which has extensive and wide applications in virtual making systems and virtual museum systems and so on.In this paper,authors adopt an effective mainframe with a camera and a mirror,under which some basic theories of a 3-D hand reconstruction are studied.It is focused on the following problems(1) how to abstract silhouettes of hand gestures from 2-D images,attaining feature points;(2) how to obtain the correspondences from feature points,(3) how to reconstruct a operator's hand using the correspondences,and(4) how to calibrate the camera,obtaining the necessary parameters.By analyzing the inherent relationship among the image plane,the mirror plane and the correspondences,this paper puts forward a novel way for 3D hand reconstruction,which not only facilitates theoretically analyses for further research,but also make it easy to reconstruct a 3D object with high accuracy.Several experimental results are presented in the last section,illustrating the satisfactory features of the above algorithm.