Pan-zoom Motion Capture in Wide Scenes using Panoramic Background
Pan-zoom Motion Capture in Wide Scenes using Panoramic Background
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DOI：
10.5220/0010815600003124
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发表时间：
2022
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影响因子：
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通讯作者：
Masanobu Yamamoto
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作者：
Masanobu Yamamoto
从多个相机时代对一个对象进行三维测量，可测量的区域是相机的常见视场。当拍摄对象离开视野时，相机必须跟随拍摄对象。在本研究中，相机的视点保持固定，并使用平移和变焦功能来操作相机，使被摄体始终在图像中心附近拍摄。问题是相机校准。我们的方法是使用全景图像。每台相机都要提前拍一张背景图，并创建一张背景全景图。然后，将被摄体周围的背景图像与全景图像进行比对，从匹配位置得到平移角度和变焦比，并对相机进行标定。利用这种方法获得的摄像机参数，从多视图运动图像中捕获人体运动。由于相机的视角是固定的，所以射击范围不是很广，但仍然可以捕捉到运动员在健身房的自由体操。
Measuring a subject three-dimensionally from multiple cam eras, the measurable area is a common field of view from cameras. When the subject goes out of the field of vie w, the cameras must follow the subject. In this research, the viewpoint of the camera keeps to be fixed an d the pan and zoom functions are used to operate the cameras so that the subject body could be always shot near the center of the image. The problem is camera calibration. Our approach is to use a panoramic image. Each c mera pans in advance to take a background image and create a panoramic image of the background. Then, t he background image around the subject body is collated with the panoramic image, the pan rotation angle and the zoom ratio are obtained from the matching position, and the camera is calibrated. The body motion is ca ptured from the multi-view motion image using the camera parameters obtained in this way. Since the viewpo nt of the camera is fixed, the shooting range is not so wide, but it is still possible to capture an athlete’s fl oor exercise in the gymnasium.