曲面仿生复眼测速技术研究  

Velocity measurement technology of curved bionic compound eye

作　　者：刘韬 郭文阁[1] 朱帅民 张远杰 许黄蓉 武登山[2,3] 周晓军 鱼卫星 LIU Tao;GUO Wenge;ZHU Shuaimin;ZHANG Yuanjie;XU Huangrong;WU Dengshan;ZHOU Xiaojun;YU Weixing(College of Science,Xi'an Petroleum University,Xi'an 710065,China;Key Laboratory of Spectral Imaging Technology of Chinese Academy of Sciences,Xi'an Institute of Optics and Precision Mechanics,Chinese Academy of Sciences,Xi'an 710072,China;College of Optoelectronics,University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]西安石油大学理学院,陕西西安710065 [2]中国科学院西安光学精密机械研究所中国科学院光谱成像技术重点实验室,陕西西安710072 [3]中国科学院大学光电学院,北京100049

出　　处：《应用光学》2024年第1期134-141,共8页Journal of Applied Optics

基　　金：国家自然科学基金(61975231,61475156);西安石油大学研究生创新与实践能力培养计划(YCS21213263)。

摘　　要：曲面仿生复眼相机具有大视场,对运动目标敏感等特点,在广域探测、内窥导管、精确制导等国防、医学及民用工业领域中有着广阔的应用前景,该文报道了基于曲面仿生复眼相机的高速运动目标测速技术研究。首先建立了基于曲面仿生复眼成像原理的测速模型;然后利用霍夫圆检测算法在原始复眼图像上找出每个子眼所在位置,并通过图像分割对相邻子眼之间重叠视场进行分析;最后再结合SIFT算法对相邻2个子眼的子图像进行特征点提取与图像配准,由提取出的特征点像素坐标计算出重叠区域像素数目,从而得到汽车的运动速度。设计了相关测速实验进行验证,实验中拍摄距离控制在6 m~10 m之间,对以8.33 m/s速度做匀速直线运动的汽车进行测试,测试结果表明,可将速度测试的相对误差控制在4%以内。与单孔径成像系统测速结果相比,曲面仿生复眼测速技术具有更高的准确性和重复性。The curved bionic compound eye camera has the characteristics of large field of view and sensitivity to moving objects,and has broad application prospects in the fields of national defense,medicine and civil industry,such as wide-area detection,endoscopic catheter,precision guidance,etc.The research on velocity measurement technology of high-speed moving target based on the curved bionic compound eye camera was reported.Firstly,a velocity measurement model based on the principle of curved bionic compound eye imaging was established,then the position of each sub-eye was found on the original compound eye image by using the Hoff circle detection algorithm,and the overlapping field of view between adjacent sub-eyes was analyzed by image segmentation.Finally,the sub-images of the two adjacent sub-eyes were extracted and matched with the SIFT algorithm,and the number of pixels in the overlapping area was calculated from the pixel coordinates of the extracted feature points,so as to get the moving speed of the car.Further,the relevant velocity measurement experiment was designed to verify.In the experiment,the shooting distance was controlled between 6 m and 10 m.The velocity test was carried out on the vehicle moving in a uniform straight line at a speed of 8.33 m/s.The test results show that the relative error of the velocity test can be controlled within 4%.Compared with the velocity measurement results of single aperture imaging system,the curved bionic compound eye velocity measurement technology has higher accuracy and repeatability.

关 键 词：仿生复眼 单孔径 测速系统 图像处理 大视场 

分 类 号：TN206[电子电信—物理电子学] TP391[自动化与计算机技术—计算机应用技术]