Testing a Movable Camera System for Quantifying 3-D Motion

开发了一种基于两个摄像机的运动物体位置量化系统。人类操作员将使用旋转摄像头跟踪受试者。该系统的创新特征是，它能够在摄像机移动时记录每个摄像机的摇摄和倾斜方向。方向角由光轴编码器测量，并以条形码格式以视频帧速率存储在图像上。这些角度和视频图像中被摄体的像素坐标将被用于计算被摄体在三维空间中的位置。收集到的数据将建立一个便携式摄像系统来研究动物在户外的运动的可行性。

A novel system, based on two video cameras, is developed to quantify the position of a moving subject. Human operators will track the subject with cameras that rotate. The innovative feature of the system is its ability to record the pan and tilt directions of each camera as the cameras are moved. The direction angles are measured by optical shaft encoders and stored on the image at video frame rates in bar code format. These angles and the pixel coordinates of the subject in the video images will be used to calculate the position of the subject in three-dimensional space. The data gathered will establish the feasibility of building a portable video camera system to study animal locomotion out of doors.