Calf Robust Weight Estimation Using 3D Contiguous Cylindrical Model and Directional Orientation from Stereo Images
Calf Robust Weight Estimation Using 3D Contiguous Cylindrical Model and Directional Orientation from Stereo Images
复制标题
使用 3D 连续圆柱模型和立体图像定向进行小牛稳健重量估计
DOI：
10.1145/3287921.3287923
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
T. Ohkawa
中科院分区：
文献类型：
--
作者：
Ryo Nishide;Ayumi Yamashita;Yumi Takaki;C. Ohta;K. Oyama;T. Ohkawa
产犊间隔通常被用作肉牛生育力的指标，然而，还需要母亲的能力，因为繁殖母牛的价值取决于生产健康和生长小牛的效率。在过去的几十年里，小牛的体重一直被用作母性能力的指标。我们提出了一种方法来估计体重建模的小腿形状使用的三维信息提取的立体图像。该方法能够通过创建3D模型来预测牛的身体的肿胀，这不能仅从2D图像获得。此外，无论牛的姿势和方向的不同拍摄条件如何，都可以估计稳健的重量。从由安装在谷仓中的摄像机拍摄的运动图像中选择适合于估计的图像，并且通过图像计算3D坐标。然后，只有身体是用3D模型开发的，因为它与体重的相关性最高。考虑到牛体侧面可能不完全垂直于摄像机的拍摄方向，提取对称轴，以找到牛体从摄像机的倾斜，以生成基于对称轴的3D模型。3D连续圆柱模型用于具有圆形形状的牛的身体。为了操纵圆柱表面的形状，应用和比较圆和椭圆拟合。用圆柱模型体积与实测体重的线性回归方程估算牛体重。作为使用实际相机图像用所提出的方法建模的结果，体重和模型体积之间的相关系数处于最佳值0.9107。即使使用从其他类型的相机获得的不同3D坐标进行实验检查，MAPE（平均绝对百分比误差）也低至6.39%。
Calving interval is often used as an indicator for fertility of beef cattle, however, maternal abilities are also required because the value of breeding cows depends on how efficiently the healthy and growing calves are produced. The calf's weight has been used as an indicator of maternity ability since the past few decades. We propose a method to estimate body weight by modeling the shape of calf using 3D information extracted from the stereo images. This method enables to predict the swelling of the cattle's body by creating a 3D model, which cannot be obtained solely from a 2D image. In addition, it is possible to estimate robust weight regardless of different shooting conditions toward cattle's posture and orientation. An image suitable for estimation is selected from motion images taken by the camera installed in the barn, and 3D coordinates are calculated by the images. Then, only the body is developed with a 3D model as it has the highest correlation with the body weight. Considering that the side of cattle's body may not be exactly perpendicular to the camera's shooting direction, a symmetric axis is extracted to find the inclination of cattle body from the camera in order to generate a 3D model based on the symmetric axis. 3D contiguous cylindrical model is used for the body of a cattle which has a rounded shape. In order to manipulate the shapes of the cylindrical surface, the circle and ellipse fittings are applied and compared. The linear regression equation of the volume of the cylindrical model and the actually measured body weight are used to estimate the cattle weight. As a result of modeling with the proposed method using the actual camera images, the correlation coefficient between the body weight and the model volume was at the best value, 0.9107. Even when experimentally examined with the different 3D coordinates obtained from other types of camera, the MAPE (Mean Absolute Percentage Error) was as low as 6.39%.
使用三维连续圆柱模型从定点立体相机图像估计小腿重量
DOI：
10.12792/icisip2017.046
发表时间：
2017
期刊：
Proceedings of the 5th IIAE International Conference on Intelligent Systems and Image Processing
影响因子：
--
作者：
Ayumi Yamashita;Takenao Ohkawa;Kenji Oyama;Chikara Ohta;Ryo Nishide;Takeshi Honda
通讯作者：
Takeshi Honda
使用三维连续圆柱模型通过立体相机估算小腿重量
DOI：
10.12792/jiiae.6.39
发表时间：
2018
期刊：
Journal of the Institute of Industrial Applications Engineers
影响因子：
--
作者：
Ayumi Yamashita;Takenao Ohkawa;Kenji Oyama;Chikara Ohta;Ryo Nishide;Takeshi Honda
通讯作者：
Takeshi Honda
DOI：
10.1109/34.888718
发表时间：
2000-11-01
影响因子：
23.6
作者：
Zhang, ZY
通讯作者：
Zhang, ZY