识别压力的迹象:使用快乐工具和压力尺度进行比较
Larissa Schlegel-Pape1, Robert Opitz2, Marko Henning3
1Freie Universität Berlin, Faculty of Veterinary Medicine, Farm Animal Clinic - Division for Poultry, Königsweg 63, 14163 Berlin, Germany.
Poultry science
|December 12, 2025
概括
使用深度学习的人工智能 (AI) 现在可以从图像中检测的不适,性能与人类观察者相比. 这项技术为自动化动物福利监测和禽类早期压力检测提供了一个有前途的工具.
科学领域:
- 动物福利科学 动物福利科学
- 计算机视觉 计算机视觉
- 机器学习 机器学习
背景情况:
- 监测动物福利对于道德农业实践至关重要.
- 评估动物压力的传统方法可能是主观和劳动密集的.
- 开发客观的,非侵入性的福利评估方法是一个关键的研究领域.
研究的目的:
- 研究深度学习模型的有效性,特别是卷积神经网络 (CNN) 和转移学习,通过图像分析来检测的不适迹象.
- 为了比较人工智能模型与人类观察者在识别家禽压力指标方面的表现.
- 探索人工智能在自动化和个人级别动物福利监测方面的潜力.
主要方法:
- 使用预训练CNN模型 (EfficientNet,MobileNet) 进行转移学习,用于对的图像分析.
- 开发了一个涉及数据准备,图像提取,预处理和增强的框架.
- 使用交叉验证和单独的数据集评估模型性能,测量精度,灵敏度和特异性.
- 采用Grad-CAM用于模型解释性,以了解决策过程.
主要成果:
- 深度学习模型,特别是EfficientNet变体,在识别的压力迹象方面表现出很高的表现.
- 在侧面图像中基于人工智能检测的不适程度与人类观察者的评分相当.
- 格拉德-CAM分析显示,人工智能模型专注于特定的身体部位进行决策.
结论:
- 深度学习为自动监测福利提供了一种强大,非侵入性的方法.
- 人工智能模型可以有效地检测个体动物的压力,为实际的福利工具提供基础.
- 这项研究推进了评估家禽福祉和早期发现不适的客观方法.
相关概念视频
Stress Response System
617
The stress response system, also known as the fight-or-flight response, is the body's automatic physiological reaction to perceived threats. Hans Selye introduced the concept of General Adaptation Syndrome (GAS) to describe the predictable pattern of changes that occur in response to stress. GAS consists of three sequential stages: alarm, resistance, and exhaustion. This model helps explain how chronic stress can contribute to health problems.
Alarm stage
In the alarm stage, the body's...
Alarm stage
In the alarm stage, the body's...
617
Stress Concentrations
564
The concept of stress concentration is crucial for understanding how materials respond under bending stresses, particularly when there are irregularities or discontinuities in the material's geometry. Normally, stress in a symmetric member subjected to pure bending is assumed to be uniformly distributed across the entire cross-section. However, this assumption does not hold when there are variations in the cross-sectional geometry or the presence of notches and holes.
The stress...
The stress...
564
Stress Concentrations
595
Stress concentration is when stress intensifies near discontinuities such as holes or abrupt cross-sectional changes in a structural member. This localized stress can often surpass the average stress within the member. The stress distribution in flat bars, either with a circular hole or varying widths connected by fillets, can be determined experimentally using a photoelastic method. The results are based on ratios of geometric parameters like the ratio of the hole's radius to the smaller...
595
Principal Stresses
710
The graphical depiction of normal and shearing stress equations is represented by a circle, demonstrating the interplay between these stresses under different angular conditions. The center of this circle C, located on the vertical axis, represents the average normal stress, while its radius shows the range of stress variations. At points A and B, where the circle intersects the horizontal axis, the maximum and minimum normal stresses are observed, occurring without shearing stress. These...
710
General State of Stress
574
The general state of stress within a material can be accurately depicted using a stress tensor. This tensor encapsulates the internal forces distributed within a material subjected to external forces or deformations.
Specifically, consider a tetrahedral element where one face, labeled XYZ, is perpendicular to the line OA, and the remaining faces align with the coordinate axes with point O as the origin. At any point, such as point O, the stress tensor can be used to determine the stress...
Specifically, consider a tetrahedral element where one face, labeled XYZ, is perpendicular to the line OA, and the remaining faces align with the coordinate axes with point O as the origin. At any point, such as point O, the stress tensor can be used to determine the stress...
574
Applications of Stress
606
Consider a structure made of a boom and a rod designed to support a load. These two components are connected by a pin and stabilized by brackets and pins. The boom and the rod are detached from their supports to assess the different stresses imposed on this structure, and a free-body diagram is drawn. Then, all the forces applied, including the load acting on the structure, are identified. The reaction forces exerted on both the boom and the rod are computed using the equilibrium equations.
The...
The...
606


