基于无人机控制和最优视图视选择的动作捕捉方法  

Motion capture method based on UAV control and optimal view selection

作　　者：孙冬 SUN Dong(School of Computer Science and Technology,Henan Institute of Technology,Xinxiang 453003,China)

机构地区：[1]河南工学院计算机科学与技术学院,河南新乡453003

出　　处：《传感器与微系统》2021年第10期51-55,共5页Transducer and Microsystem Technologies

基　　金：河南省科技攻关项目(202102210153);河南省高等学校教学名师工作室项目(教高{2019}618号)。

摘　　要：针对现有技术难以将相机自动定位在准确合适的位置进行人体动作捕捉,提出利用无人机(UAV)控制和视点最优选择进行不确定性估计的方法。首先,利用神经网络,从UAV视频当前帧中推导出2D和3D人体姿态;然后,使用过去k帧的2D姿态和相关3D姿态以优化全局3D人体运动;最后,选择下一个最优视点,使得从该视点得到的人体姿态估计的不确定性最小化。实验通过合成和公开数据集进行仿真,结果表明:所提方法能够改善3D动作估计结果。在不受物理约束的情况下选择下一个视点时,所提方法性能优于基线方法。对于模拟UAV飞行模式,所提方法与不停环绕方法性能大致相当。Aiming at the problem that it is difficult to locate the camera automatically in an accurate and appropriate position for human motion capture in the existing technology,a method of uncertainty estimation based on unmanned aerial vehicle(UAV)control and optimal viewpoint selection is proposed.Firstly,the existing neural network is used to derive 2 D and 3 D human pose from the current frame of UAV video.Then,the 2 D pose and related 3 D pose of the past k frames are used to optimize the global 3 D human motion.Finally,the next optimal viewpoint is selected to minimize the uncertainty of human pose estimation from this viewpoint.Experimental results on synthetic and public datasets show that the proposed method can improve the 3 D human motion estimation results.The performance of the proposed method is better than that of the baseline method when the next viewpoint is selected without physical constraints.For the simulation of UAV flight mode,the performance of the proposed method is similar to that of the non-stop orbit method.

关 键 词：无人机(UAV)控制 人体动作捕捉 不确定性 最优视点 动作估计 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] TP391[自动化与计算机技术—控制科学与工程]