Three-dimensional Modeling of Dynamic Environments Employing Mobile Stereo Vision

人体运动的三维建模很重要，因为它具有许多应用领域，例如康复、体育、视频游戏制作等。然而，为了执行三维建模，有关的运动通常需要在配备了多个固定摄像机的大型演播室中进行动作，这排除了对各种运动(例如，在室外观察到的运动)的建模。目前还没有一个既定的模式。在这种情况下，本研究的目标是：(1)开发一种基于多个移动摄像头的三维形状/运动恢复技术。(2)开发一种通过使用图像传输设备发送图像来对远程动态环境进行三维建模的技术。我们开发了一种基于移动摄像头图像捕获的三维物体建模技术。首先，建立了一种利用获取的视频图像中提取的二维静态特征点进行摄像机标定的方法。然后，我们开发了一种计算对象上的点的三维位置的方法，以便对对象的形状/运动进行建模。在巧妙的步骤中，我们利用上述技术开发了一个远程动态环境建模系统，该系统的图像由移动摄像头捕获并通过图像传输设备发送。进行了实验，得到了满意的结果。

Three-dimensional modeling of human motions is important, since it has many application fields such as rehabilitation, sports, video game production, etc. In order to perform three-dimensional modeling, the motion concerned normally needs to be acted in a large studio equipped with a number of settled cameras This excludes various motions (motions observed outdoors, for example) from being modeled, however. There hasn't been an established modeling. technique that can model those motions which are acted in various places including outdoor environments.In this situation, the present research aims at achieving the followings :(1)To develop a three-dimensional shape/motion recovery technique based on more than two mobile cameras that capture images while moving.(2)To develop a technique for three-dimensional modeling of a remote dynamic environment where people have various actions by sending the images using an image transfer apparatus.We have developed a technique for modeling a three-dimensional object based on image capture by mobile cameras. In the first place, we habe established a method of camera calibration using two-dimensional static feature points extracted on the obtained video images. Then we have developed a method of computing three-dimensional positions of the points on an object concerned in order to model shape/motion of the object.In the neat step, employing the above technique, we have developed a system for modeling a remote dynamic environment whose images are captured by mobile cameras and sent by image transfer apparatus. Performed experiments gave satisfactory results.