How does the Behaviour of Dairy Cows during Recording Affect an Image Processing Based Calculation of the Udder Depth
How does the Behaviour of Dairy Cows during Recording Affect an Image Processing Based Calculation of the Udder Depth
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记录过程中奶牛的行为如何影响基于图像处理的乳房深度计算
DOI：
10.4236/as.2018.91004
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
G. Thaller
中科院分区：
文献类型：
--
作者：
J. Salau;J. H. Haas;W. Junge;G. Thaller
精准畜牧业研究基于通过技术设备从动物身上测量的数据。在自动化手段中，在收集传感器数据期间通常不会考虑动物对设备的反应或个体动物的行为。在这项研究中，使用 2D 摄像机记录了 14 头荷斯坦-弗里斯兰奶牛穿过由 6 个 Microsoft Kinect 3D 摄像机组成的扫描通道的情况。通过视频片段评估奶牛避开通道的时间、需要走过的时间或停止行走的次数等基本行为特征，并根据使用自动化程序根据记录的 3D 数据计算出的目标变量“乳房深度”进行分析。记录每头牛的十次重复传代。在重复过程中，奶牛根据记录情况进行单独调整（p < 0.001）。完成一次传递的平均总时间 (p = 0.05) 和平均停止次数 (p = 0.07) 取决于奶牛的泌乳数。目标变量“乳房深度”的测量精度受到奶牛避开记录的时间（p = 0.06）和它们走过扫描通道的时间（p = 0.03）的影响。收集传感器数据期间动物行为的影响可能会改变结果，因此在开发基于传感器的设备时应考虑到。
Precision Livestock Farming studies are based on data that was measured from animals via technical devices. In the means of automation, it is usually not accounted for the animals’ reaction towards the devices or individual animal behaviour during the gathering of sensor data. In this study, 14 Holstein-Friesian cows were recorded with a 2D video camera while walking through a scanning passage comprising six Microsoft Kinect 3D cameras. Elementary behavioural traits like how long the cows avoided the passage, the time they needed to walk through or the number of times they stopped walking were assessed from the video footage and analysed with respect to the target variable “udder depth” that was calculated from the recorded 3D data using an automated procedure. Ten repeated passages were recorded of each cow. During the repetitions, the cows adjusted individually (p < 0.001) to the recording situations. The averaged total time to complete a passage (p = 0.05) and the averaged number of stops (p = 0.07) depended on the lactation numbers of the cows. The measurement precision of target variable “udder depth” was affected by the time the cows avoided the recording (p = 0.06) and by the time it took them to walk through the scanning passage (p = 0.03). Effects of animal behaviour during the collection of sensor data can alter the results and should, thus, be considered in the development of sensor based devices.