基于深度与传统特征融合的非限制条件下奶牛个体识别
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河北省重点研发计划项目(22327404D)、国家重点研发计划项目(2021YFD1300502)和河北农业大学精准畜牧学科群建设项目(1090064)


Individual Identification of Dairy Cows under Unrestricted Conditions Based on Fusion of Deep and Traditional Features
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    摘要:

    针对非限制条件下奶牛的个体识别,提出了一种基于深度特征与传统特征融合的奶牛识别方法。首先利用Mask R-CNN识别站立和躺卧姿态下的奶牛。其次,用两种方法提取奶牛的特征概率向量:用卷积神经网络(Convolutional neural network, CNN)提取Softmax层概率向量形式的深度特征;人工提取并利用近邻成分分析(Neighbourhood component analysis,NCA)选择传统特征,并将其输入支持向量机(Support vector machine, SVM)模型,输出概率向量。最后对两种特征进行融合,并基于融合后的特征采用SVM对奶牛进行分类。对58头奶牛站立和躺卧姿态的数据集进行了个体识别实验,结果表明,对于站立和躺卧姿态下的奶牛,与单独使用深度特征相比,特征融合方法准确率分别提高约3个百分点和2个百分点;与单独使用传统特征相比,特征融合方法准确率分别提高约5个百分点和10个百分点。站立和躺卧姿态下的奶牛个体识别率分别达到98.66%和94.06%。本文研究结果可为智能奶牛行为分析、疾病检测等提供有效的技术支持。

    Abstract:

    Cow individual recognition is the premise of automatic cow behavior analysis and disease detection,which is important for achieving precision animal husbandry. An individual identification method of dairy cows under unrestricted conditions based on the fusion of deep features and traditional features was proposed. Firstly, Mask R-CNN was used to identify cows in standing and lying positions. Secondly, two methods were used to extract the feature probability vectors of dairy cows. Convolutional neural network (CNN) was used to extract the deep features in the form of probability vectors of Softmax layer. The traditional features were manually extracted and selected by neighbourhood component analysis (NCA), and input into the support vector machine (SVM) model to output the probability vector. Finally, the two features were fused. Based on the fused features, SVM was used to classify the dairy cows. The experiment of cow individual identification was carried out on the image data set of 58 cows in standing and lying positions. The results showed that for cows in standing and lying cows, the feature fusion method improved the accuracy by about 3 percentage points and 2 percentage points compared with that using deep features alone, and the accuracy of the feature fusion method was improved by about 5 percentage points and 10 percentage points for cows in standing and lying postures, respectively, compared with traditional features alone. The accuracy of the method proposed reached 98.66% and 94.06% for standing and lying cows, respectively. The results can provide effective technical support for intelligent cow behavior analysis, disease detection, etc.

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司永胜,王朝阳,张艳,王克俭,刘刚.基于深度与传统特征融合的非限制条件下奶牛个体识别[J].农业机械学报,2023,54(6):272-279. SI Yongsheng, WANG Zhaoyang, ZHANG Yan, WANG Kejian, LIU Gang. Individual Identification of Dairy Cows under Unrestricted Conditions Based on Fusion of Deep and Traditional Features[J]. Transactions of the Chinese Society for Agricultural Machinery,2023,54(6):272-279.

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  • 收稿日期:2022-09-26
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  • 在线发布日期: 2022-11-18
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