摘要
通过像机前加一个双棱镜实现单像机的虚拟双目拍摄,根据立体视觉原理可以获取空间点三维信息,该装置被用于测量昆虫自由飞行运动参数。如果双棱镜和像机摆放得当,可以简化立体视觉测量中对应点匹配这一最难步骤。实验获得了蜻蜓直飞过程中的一系列运动参数,将这些参数结合起来考察对于研究昆虫飞行机理非常有意义。特别地,我们对昆虫飞行中翅膀的柔性效应进行了初步讨论。
A novel and practical stereo camera system which uses only one camera and a biprism placed in front of the camera is proposed to measure the kinematic parameters of free flight dragonfly including body position and attitude, wing deformation, flapping angle, torsional angle etc. The results of measurement will be very useful for the research of insect flight mechanism. An additional advantage of the system is that corresponding features lies on the scan-line automatically, if the camera and biprism are placed properly. The flexibility of dragonfly wing ＇s deformation is investigated especially according to the measurement results with this method. It is predicted that the flexibility of dragonfly wing＇s mostly comes from the movement delay of the trailing edge to the leading edge.
出处
《实验力学》
CSCD
北大核心
2007年第5期511-518,共8页
Journal of Experimental Mechanics
