2020
DOI: 10.3390/s20216334
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Non-Invasive Sheep Biometrics Obtained by Computer Vision Algorithms and Machine Learning Modeling Using Integrated Visible/Infrared Thermal Cameras

Abstract: Live sheep export has become a public concern. This study aimed to test a non-contact biometric system based on artificial intelligence to assess heat stress of sheep to be potentially used as automated animal welfare assessment in farms and while in transport. Skin temperature (°C) from head features were extracted from infrared thermal videos (IRTV) using automated tracking algorithms. Two parameter engineering procedures from RGB videos were performed to assess Heart Rate (HR) in beats per minute (BPM) and … Show more

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Cited by 23 publications
(33 citation statements)
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“…The HR in beats per minute (BPM) was estimated from the eye section of the cropped videos. The HR algorithm developed in Matlab ® R2018a and updated/adapted in version R2021a by the DAFW-UoM group is based on luminosity changes in the green color channel from ROIs obtained, which uses the photoplethysmography (PPG) principle based on the peak analysis of the signal obtained from luminosity over time, which computes the amplitude and frequency of this signal [ 38 , 44 ] ( Figure 3 a). Furthermore, the RR in breaths per minute (BrPM) was computed using the copped videos from the nose section.…”
Section: Methodsmentioning
confidence: 99%
“…The HR in beats per minute (BPM) was estimated from the eye section of the cropped videos. The HR algorithm developed in Matlab ® R2018a and updated/adapted in version R2021a by the DAFW-UoM group is based on luminosity changes in the green color channel from ROIs obtained, which uses the photoplethysmography (PPG) principle based on the peak analysis of the signal obtained from luminosity over time, which computes the amplitude and frequency of this signal [ 38 , 44 ] ( Figure 3 a). Furthermore, the RR in breaths per minute (BrPM) was computed using the copped videos from the nose section.…”
Section: Methodsmentioning
confidence: 99%
“…Furthermore, classified data were reanalyzed by three different functions and a second model using Bayesian Regularized algorithm employed these inputs to predict HR. These models performed an accuracy of 85% and 84% respectively [44].…”
Section: Sheepmentioning
confidence: 95%
“…The use of machine learning (ML) has been applied to different industries such as sustainability of materials [ 36 ], techno-economics [ 37 ], molecular crystals engineering [ 38 ], energy [ 39 ], diagnostics in medicine [ 40 ] and, more recently, food/beverages [ 17 , 18 , 22 , 29 , 41 ] and agriculture [ 42 , 43 , 44 ]. This has been an effective tool to aid in the prediction and rapid assessment of products; however, a common issue found when using ML is the overfitting of the models because the generalization of the data is not achieved.…”
Section: Introductionmentioning
confidence: 99%