Development of recording and multi dimensional analysis system for track & field

本研究的目的是通过建立中长跑运动员的跑步模型和定量数据库，利用ODV（Omni Directional Vision System），为中长跑运动员提供合适的训练方案。ODV由两个锥形反射镜和一个CCD摄像机组成。在该系统中，入射光经过两次反射后进入CCD，实现了真实的全方位视觉。在我们开始这个项目之前，整个系统的有效性是通过两个测试来证实的。一种是用ODV进行全程分析，另一种是用普通摄像机进行微小运动分析，去年设计并生产了一种新的设备，用于400米田径标准化场地。该装置由两个光学元件和一个高速相机构成。两个光学系统分别是作为ODV的全方位光学系统和作为变焦透镜的特定区域放大光学系统。前者以真实的时间记录运动轨迹的全过程，了解运动员的位置与时间的关系;后者对跑者的运动进行了细致的分析。由于ODV视觉，我们可以将变焦透镜聚焦在跑步者身上。今年，我们评估了去年创建的设备。在全方位光学器件中，图像足够清晰，可以识别跑步者，而不会失真。在特定区域放大光学系统中，图像的分辨率足够高，可以识别人体的各个部位。得出结论，主要的主题是实现，排除最大距离的情况。在这种情况下，我们无法从图像中分辨出身体部位，因为模糊。

The purpose of this study is propose proper training menu for middle-distance-runner, through build running model and quantitative database, using ODV (Omni Directional Vision system). ODV is constructed with two cone-shaped mirror and one CCD camera. In this system, incoming light is reflected two times to enter CCD, what's more, gets all directional vision in real time. Before we had started this project, effectiveness of whole system is confirmed with two tests. One is whole track analysis with ODV, another is minute motion analysis with normal camera.In last year, a new device is designed and produced to be used at 400m track as standardized field. The device is constructed with two optics and one high-speed camera. Two optics are omni-directional optics as ODV, and specific area enlarge optics as zoom lens. The former records all around of track in real time to know relation between time and position of runner. The latter analyze motion of runner minutely. Thanks to ODV vision, we can focus zoom lens on runner.In this year, we evaluate the device created last year. In omni-directional optics, image was sharp enough to recognize runner with no distortion. In specific area enlarge optics, resolution of image was high enough to recognize each parts of body. It is concluded that major subject is achieved, exclude the case of maximum distance. In this case, we can not tell body parts from the image, because of obscure.