Research on the Recognition and Tracking of Group-Housed Pigs' Posture Based on Edge Computing
文献类型: 外文期刊
作者: Zha, Wenwen 1 ; Li, Hualong 2 ; Wu, Guodong 1 ; Zhang, Liping 3 ; Pan, Weihao 1 ; Gu, Lichuan 1 ; Jiao, Jun 1 ; Zhang, Qiang 4 ;
作者机构: 1.Anhui Agr Univ, Sch Informat & Comp, Hefei 230036, Peoples R China
2.Chinese Acad Sci, Inst Intelligent Machines, Hefei 230031, Peoples R China
3.Anhui Acad Agr Sci, Inst Agr Econ & Informat, Hefei 230031, Peoples R China
4.Univ Manitoba, Dept Biosyst Engn, Winnipeg, MB R3T 5V6, Canada
关键词: behavior monitoring; target detection; multi-target tracking; edge computing
期刊名称:SENSORS ( 影响因子:3.9; 五年影响因子:4.1 )
ISSN:
年卷期: 2023 年 23 卷 21 期
页码:
收录情况: SCI
摘要: The existing algorithms for identifying and tracking pigs in barns generally have a large number of parameters, relatively complex networks and a high demand for computational resources, which are not suitable for deployment in embedded-edge nodes on farms. A lightweight multi-objective identification and tracking algorithm based on improved YOLOv5s and DeepSort was developed for group-housed pigs in this study. The identification algorithm was optimized by: (i) using a dilated convolution in the YOLOv5s backbone network to reduce the number of model parameters and computational power requirements; (ii) adding a coordinate attention mechanism to improve the model precision; and (iii) pruning the BN layers to reduce the computational requirements. The optimized identification model was combined with DeepSort to form the final Tracking by Detecting algorithm and ported to a Jetson AGX Xavier edge computing node. The algorithm reduced the model size by 65.3% compared to the original YOLOv5s. The algorithm achieved a recognition precision of 96.6%; a tracking time of 46 ms; and a tracking frame rate of 21.7 FPS, and the precision of the tracking statistics was greater than 90%. The model size and performance met the requirements for stable real-time operation in embedded-edge computing nodes for monitoring group-housed pigs.
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