基于视频跟踪的竖缝式鱼道内鱼类运动行为分析

鱼类运动行为的观察能够为鱼类健康监控提供直观信息，而通过人工标定的方式监测鱼群运动行为耗时长、效率低。文章针对鱼类运动行为的监测问题，提出一种基于图像处理技术的罗非鱼运动监测方法。首先利用计算机、CCD高清摄像机获取鱼群运动视频，再对图像进行滤波去噪、灰度等处理；通过Ostu阈值分割法改进Canny边缘检测算法提取鱼群的边缘轮廓；在建立鱼群运动模型的基础上结合目标关联匹配算法，实现罗非鱼运动行为的跟踪和监测。结果显示鱼群的个体检出率为98.96%，轨迹完整度为97%。提出的算法比卡尔曼滤波的轨迹跟踪监测效果略有提升，能够较好地完成鱼群的运动跟踪和动态监测。

Quantification of shoaling behaviour in zebrafish (Danio rerio)

Observation of fish behavior provides rich visual information for fish health monitoring. However, the method of monitoring the fish behavior by manual marking is time-consuming and inefficient. In order to solve the problem of fish behavior monitoring, a method of monitoring tilapia movement based on image processing is proposed. These fish movement videos were first collected by computer and CCD camera, and then pretreated by graying and filtering. The Canny detection algorithm improved by Otsu was used to extract the edge of fish. Based on modelling the motion of fish school and combining the objective matching algorithm, the tracking and monitoring of fish school can be realized well. The results show that the individual detection rate of fish school was 98.96%, and the trajectory available factor (TAF) was 97%. The proposed algorithm can improve monitoring performance, better than Kalman algorithm, and can realize fish school tracking and monitoring.