The Method of Multi-Camera Layout in Motion Capture System for Diverse Small Animals
The Method of Multi-Camera Layout in Motion Capture System for Diverse Small Animals
复制标题
多种小动物运动捕捉系统中多摄像机布局的方法
DOI：
10.3390/app8091562
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发表时间：
2018-09
期刊：
影响因子：
--
通讯作者：
Zhendong Dai
中科院分区：
文献类型：
--
作者：
Weijia Zong;Zhouyi Wang;Qiang Xing;Junjie Zhu;Liuwei Wang;Kai Qin;Hemin Bai;Min Yu;Zhendong Dai
基于多摄像机的运动捕捉广泛应用于动物运动行为的量化，是揭示动物运动物理规律、启发仿生机器人设计与实现的主要研究方法之一。研究发现，多摄像机布局方式对运动捕捉效果有很大影响。由于对不同物种动物的研究，确定最合适的布局模式以获得优异的捕获性能仍然是一个悬而未决的挑战。为了提高捕获精度，本研究重点研究了多摄像头布置的方法，作为一种针对不同外观特征和运动行为差异较大的动物的运动捕获系统。根据动物的外观类型(形状和空间体积)和行为特征确定运动捕捉的需求边界，得出典型的多摄像头布局模式(拱形、环形和半环形)与不同动物的匹配原则。标定实验结果表明，多相机系统在半环布局模式下的平均标准偏差(ASDR)(0.52%)明显小于其他两种模式，但其交会体积是三种模式中最大的。半环形布局中不同景深下的ASDR表明，较大的景深有利于提高运动捕获系统的精度。对小型动物(壁虎和蜘蛛)的运动捕获的实验室实验表明，采用锁定在三维力测量平台上的半环形布局的多摄像头系统，它们的ASDR可以达到3.8%以下，捕获偏差率(ACDR)分别为3.43%和1.74%。本报告确定了小动物运动捕捉需求边界与多摄像头布局模式特点之间的相关性，以推进各种小动物的运动捕捉实验技术，为理解动物运动提供有效的支持。
Motion capture based on multi-camera is widely used in the quantification of animal locomotor behaviors and this is one of the main research methods to reveal the physical laws of animal locomotion and to inspire the design and realization of bionic robot. It has been found that the multi-camera layout patterns greatly affect the effect of motion capture. Due to the researches for animals of diverse species, determining the most appropriate layout patterns to achieve excellent capture performance remains an unresolved challenge. To improve the capturing accuracy, this investigation focuses on the method of multi-camera layout as a motion capture system for diverse animals with significant differences in outward appearance characteristics and locomotor behaviors. The demand boundaries of motion capture are determined according to the appearance types (shapes and space volume) and the behavior characteristics of the animals, resulting in the matching principle of the typical multi-camera layout patterns (arch, annular and half-annular) with diverse animals. The results of the calibration experiments show that the average standard deviation rate (ASDR) of multi-camera system in the half-annular layout patterns (0.52%) is apparently smaller than that of the other two patterns, while its intersecting volume is the largest among the three patterns. The ASDR at different depths of field in a half-annular layout demonstrate that the greater depth of field is conducive to improving the precision of the motion capture system. Laboratory experiments of the motion capture for small animals (geckos and spiders) employed the multi-camera system locked in the 3-D force measuring platform in a half-annular layout pattern indicate that the ASDR of them could reach less than 3.8% and their capturing deviation rate (ACDR) are respectively 3.43% and 1.74%. In this report, the correlations between the motion capture demand boundaries of small animals and the characteristics of the multi-camera layout patterns were determined to advance the motion capture experimental technology for all kinds of small animals, which can provide effective support for the understanding of animal locomotion.
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影响因子：
64.8
作者：
Donley, JM;Sepulveda, CA;Shadwick, RE
通讯作者：
Shadwick, RE
影响因子：
--
作者：
Guan Xu;Xiaotao Li;Jian Su;Hongda Pan;Guangdong Tian
通讯作者：
Guan Xu;Xiaotao Li;Jian Su;Hongda Pan;Guangdong Tian
DOI：
--
发表时间：
2009
期刊：
Microprocessors
影响因子：
--
作者：
Xi Run-ping
通讯作者：
Xi Run-ping
影响因子：
64.8
作者：
Autumn, K;Liang, YA;Full, RJ
通讯作者：
Full, RJ
影响因子：
4.5
作者：
Erdem, Ugur Murat;Sclaroff, Stan
通讯作者：
Sclaroff, Stan