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LAD-RCNN: A Powerful Tool for Livestock Face Detection and Normalization

文献类型： 外文期刊

作者： Sun, Ling 1 ; Liu, Guiqiong 2 ; Yang, Huiguo 4 ; Jiang, Xunping 1 ; Liu, Junrui 2 ; Wang, Xu 2 ; Yang, Han 2 ; Yang, Shiping 2 ;

作者机构： 1.Key Lab Smart Farming Agr Anim, Wuhan 430070, Peoples R China

2.Huazhong Agr Univ, Coll Anim Sci & Technol, Lab Small Ruminant Genet Breeding & Reprod, Wuhan 430070, Peoples R China

3.Breeding & Reprod Minist Educ, Key Lab Agr Anim Genet, Wuhan 430070, Peoples R China

4.Xinjiang Acad Anim Sci, Inst Anim Husb, Urumqi 830013, Peoples R China

关键词： livestock face detection; rotation angle detection; livestock face normalization; face recognition

期刊名称：ANIMALS （ 影响因子：3.0； 五年影响因子：3.2 ）

ISSN： 2076-2615

年卷期： 2023 年 13 卷 9 期

页码：

收录情况： SCI

摘要： With the demand for standardized large-scale livestock farming and the development of artificial intelligence technology, a lot of research in the area of animal face detection and face identification was conducted. However, there are no specialized studies on livestock face normalization, which may significantly reduce the performance of face identification. The keypoint detection technology, which has been widely applied in human face normalization, is not suitable for animal face normalization due to the arbitrary directions of animal face images captured from uncooperative animals. It is necessary to develop a livestock face normalization method that can handle arbitrary face directions. In this study, a lightweight angle detection and region-based convolutional network (LAD-RCNN) was developed, which contains a new rotation angle coding method that can detect the rotation angle and the location of the animal's face in one stage. LAD-RCNN also includes a series of image enhancement methods to improve its performance. LAD-RCNN has been evaluated on multiple datasets, including a goat dataset and infrared images of goats. Evaluation results show that the average precision of face detection was more than 97%, and the deviations between the detected rotation angle and the ground-truth rotation angle were less than 6.42 degrees on all the test datasets. LAD-RCNN runs very fast and only takes 13.7 ms to process a picture on a single RTX 2080Ti GPU. This shows that LAD-RCNN has an excellent performance in livestock face recognition and direction detection, and therefore it is very suitable for livestock face detection and normalization.

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