A Feasibility Study on the Use of a Structured Light Depth-Camera for Three-Dimensional Body Measurements of Dairy Cows in Free-Stall Barns

Sensors
Andrea PezzuoloFrancesco Marinello

Abstract

Frequent checks on livestock's body growth can help reducing problems related to cow infertility or other welfare implications, and recognizing health's anomalies. In the last ten years, optical methods have been proposed to extract information on various parameters while avoiding direct contact with animals' body, generally causes stress. This research aims to evaluate a new monitoring system, which is suitable to frequently check calves and cow's growth through a three-dimensional analysis of their bodies' portions. The innovative system is based on multiple acquisitions from a low cost Structured Light Depth-Camera (Microsoft Kinect™ v1). The metrological performance of the instrument is proved through an uncertainty analysis and a proper calibration procedure. The paper reports application of the depth camera for extraction of different body parameters. Expanded uncertainty ranging between 3 and 15 mm is reported in the case of ten repeated measurements. Coefficients of determination R² > 0.84 and deviations lower than 6% from manual measurements where in general detected in the case of head size, hips distance, withers to tail length, chest girth, hips, and withers height. Conversely, lower performances where recognized in...Continue Reading

References

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Citations

Sep 13, 2018·Sensors·Lvwen HuangHongyan Wang
Feb 13, 2021·Animals : an Open Access Journal From MDPI·Alessia CogatoAndrea Pezzuolo
May 1, 2021·Animals : an Open Access Journal From MDPI·Przemysław RacewiczPiotr Ślósarz
Dec 14, 2021·Frontiers in Veterinary Science·Dengsheng SunKees van Reenen

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Software Mentioned

Kinect
Excel©

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