基于图像和IMU传感器的生物行为分析系统设计

Design of Biological Behavior Analysis System Based on Vision and IMU Sensors

在小鼠行为学实验中,仅使用数字图像处理技术无法对小鼠行为进行全面检测和分析。针对这一问题,文中提出基于图像和IMU传感器结合的生物行为检测方法。该方法在Python编程环境下,利用数字图像处理技术对小鼠运动视频进行检测跟踪,获得小鼠的运动行为学参数。同时,使用本实验室设计的无线蓝牙微型IMU传感器测量小鼠的三轴加速度、三轴角速度、三轴磁力,对测量数据使用扩展卡尔曼滤波算法进行解算以获得小鼠的姿态等体态变化信息。实验结果表明,该系统能较好地自动分析出小鼠的运动行为信息和姿态信息,并能在生物行为分析系统界面上实时显示出行为信息。

In order to solve the problem that the digital image processing technology alone cannot detect and analyze the behavior of mice in behavioral experiments,a biological behavior detection method based on the combination of image and IMU sensor is proposed in this study.In Python programming environment,this method uses digital image processing technology to detect and track the motion video of mice,and obtain the motion behavior parameters of mice.Meanwhile,the wireless bluetooth micro IMU sensor designed by the laboratory is used to measure the three-axis acceleration,three-axis angular velocity and three-axis magnetic force of mice.The extended Kalman filter algorithm is used to solve the measured data to obtain the posture and other posture change information of mice.The experimental results show that the system can automatically analyze the motor behavior and posture information of mice,and can display the behavior information on the interface of biological behavior analysis system in real time.