蜻蜓飞行姿态的实时模拟测量

Realtime Measurement of Simulated Dragonfly′s Flying Posture

作为昆虫自由飞行姿态实时测量的预研课题 ,本文利用投影栅线法对真实蜻蜓翅膀在以适当频率摆动的机械驱动下模拟真实飞行时的三维形状变化进行了实时测量 .由于在图像采集 ,预处理 ,位相提取 ,抑噪声去包络等环节采取了一系列措施 ,克服了由于蜻蜓翅膀透明度高 ,表面微观起伏变化剧烈所导致的栅线条纹图的平均灰度、对比度和信噪比都很低而给数据处理带来的困难 .

As a pre research work of measuring the gesture of free flight insects in real time, in this thesis we use the grating projection method to measure movement of the real dragonfly′s wing driven by mechanism. Because the dragonfly′s wing is transparent and its surface is not smooth ,the graph we got is not bright and with bad contrast. So it is very difficult to deal with the data. We did much work on getting the picture, pretreatment, calculating the wrapped phase and unwrapping the phase. And then we got satisfying result.