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20 October 2023 Methods of three-dimensional reconstruction and body size measurement of cattle based on multi-view binocular camera
Zihan Song, Jikai Zhang, Zhihua Wu, Yongxing Du, Weijian Hu, Xin Liu
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Proceedings Volume 12916, Third International Conference on Signal Image Processing and Communication (ICSIPC 2023); 129160K (2023) https://doi.org/10.1117/12.3005125
Event: Third International Conference on Signal Image Processing and Communication (ICSIPC 2023), 2023, Kunming, China
Abstract
To address the issues of high measurement difficulty and poor measurement accuracy in traditional cattle body measurement methods, this study employed a multi-view stereo vision-based cattle body three-dimensional (3D) reconstruction and automatic body measurement method to conduct comparative research on a yellow cattle model and 47 dairy cows. An automatic data acquisition channel equipped with multi-angle stereo cameras was designed, and a cattle body keypoint recognition method based on the YOLOv7 object detection algorithm was used to achieve instant automatic multi-angle cattle body 3D point cloud data acquisition. To reduce the influence of point cloud noise caused by external factors such as lighting, this paper used statistical filtering and guided filtering methods for local point cloud denoising. To improve the accuracy and authenticity of the 3D reconstructed point cloud, a point cloud registration and fusion method based on the nearest iterative point was applied. Finally, polar coordinate transformation and curve fitting methods were used to measure data including body length, body diagonal length, body height, girth, chest circumference, and abdominal circumference. The experimental results show that the average relative error between the 6 sets of body measurement data and the actual measurements in the laboratory environment is 1.76%. In the breeding farm environment, the average relative error between the 6 sets of live cattle measurements and the actual measurements is 1.74%. This study can be applied to contactless cattle body measurement, which is beneficial for achieving precise cattle breeding.
(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Zihan Song, Jikai Zhang, Zhihua Wu, Yongxing Du, Weijian Hu, and Xin Liu "Methods of three-dimensional reconstruction and body size measurement of cattle based on multi-view binocular camera", Proc. SPIE 12916, Third International Conference on Signal Image Processing and Communication (ICSIPC 2023), 129160K (20 October 2023); https://doi.org/10.1117/12.3005125
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KEYWORDS
Point clouds
Cameras
3D modeling
Data modeling
3D metrology
Chest
Environmental sensing
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