Software for Ground-truthing Articulated Tracking via Virtual Markers

This is a small Matlab GUI utility to ease the tedious task of defining the ground-truth 2D (x,y) location of body joints for articulated human body tracking in videos that have no associated motion capture data. The system partially automates the task of defining the 'virtual markers' by predicting a joint's (x,y) position in the next frame via template matching, and a human can correct the prediction interactively if necessary. For each joint, it takes 5-10 minutes to ground-truth 500 frames of video. Under Windows, any installed AVI codec is supported; under Unix Matlab only supports raw video.

本工具为一款轻量级Matlab图形用户界面（GUI）工具，旨在简化无配套运动捕捉数据的视频中，铰接式人体跟踪任务所需的人体关节二维（x,y）真实标注（ground-truth）坐标定义这一繁琐工作。本系统通过模板匹配算法预测下一帧中人体关节的（x,y）坐标，以此部分自动化“虚拟标记点”的定义流程；若有需求，操作人员可交互式地对预测结果进行修正。针对单个人体关节，完成500帧视频的真实标注工作需耗时5至10分钟。在Windows系统下，本工具支持所有已安装的AVI编解码器；而在Unix环境中，Matlab仅支持原始视频格式。