摘要
文章针对四足动物的运动源数据获取困难的问题,引入简单易用的步态概念,提出一种基于视频标记的四足动物运动重建方法。从视频中标记原始步态信息,并对步态进行形式化描述,进而估算出当前步态的速度信息;从视频中标记原始骨架关键节点,对四足动物的骨架模型进行三维重建;基于步态参数和骨架结构,恢复四足动物的足尖运动轨迹;通过反向运动学方法求解四足动物的腿部运动信息,并近似模拟躯干、头、尾运动,最终重建全身运动。实验证明,该文方法可以快速有效地辅助用户重建视频中四足动物的运动数据,且其重建结果具有一定的视觉真实感。
To solve the difficulties of capturing the quadruped motion data, an easy-to-use concept of gait is introduced, and a novel method of quadruped motion reconstruction based on marks on video is presented. Firstly, the gait information is marked from a video clip, and the gait parameters with formal description are represented. The speed of the current motion is estimated from marked gait parameters. Secondly, the key nodes of skeleton structure are marked from the same video in order to build 3D skeleton model for the quadruped. Thirdly, based on gait parameters and skeleton structure, the motion trajectories of all four toes are reconstructed. Finally, the motions of each limb are calculated by using inverse kinematics, and with approximate simulations of the torso, head and tail motions of the quadruped, the motions of the whole body are reconstructed from the given video. The experimental results show that the presented method provides a simple and effective way for assisting users to reconstruct quadruped motion from video with visually acceptable reality.
作者
杨智为
谢文军
刘晓平
YANG Zhiwei;XIE Wenjun;LIU Xiaoping(School of Computer and Information, Hefei University of Technology, Hefei 230009, China)
出处
《合肥工业大学学报（自然科学版）》
CAS
北大核心
2019年第1期40-45,共6页
Journal of Hefei University of Technology：Natural Science
基金
中央高校基本科研业务费专项资金资助项目(JZ2017HGBH0915)
安徽省科技强警计划资助项目(1604d0802009)
关键词
计算机图形学
骨骼动画
四足动物
运动重建
步态
computer graphics
skeletal animation
quadruped
motion reconstruction
gait
