Kochi Nobuo, Hayashi Atsushi, Shinohara Yota, Tanabata Takanari, Kodama Kunihiro, Isobe Sachiko
National Agriculture and Food Research Organization, Tokyo 105-0003, Japan.
Kazusa DNA Research Institute, Kisarazu, Chiba 292-0818, Japan.
Breed Sci. 2022 Mar;72(1):75-84. doi: 10.1270/jsbbs.21068. Epub 2022 Feb 2.
In this study, we developed an all-around 3D plant modeling system that operates using images and is capable of measuring plants non-destructively without any contact. During the fabrication of this device, we selected a method capable of performing 3D model reconstruction from multiple images. We then developed an improved SfM-MVS (Structure from Motion / Multi-View-Stereo) method that enables 3D reconstruction by simply capturing images with a camera. The resulting image-based method offers a high degree of freedom because the hardware and software can comprise commercially available products, and it permits the use of one or more cameras according to the shape and size of the plant. The advantages of the image-based method are that 3D reconstruction can be conducted at any time as long as the images are already taken, and that the desired locations can be observed, measured, and analyzed from 2D images and a 3D point cloud. The device we developed is capable of 3D measurements and modeling of plants from a few millimeters to 2.4 m of height using this method. This article explains this device, the principles of its composition, and the accuracy of the models obtained from it.
在本研究中，我们开发了一种全方位的3D植物建模系统，该系统利用图像运行，能够在不进行任何接触的情况下对植物进行无损测量。在制造该设备的过程中，我们选择了一种能够从多张图像进行3D模型重建的方法。然后，我们开发了一种改进的SfM-MVS（运动结构/多视图立体）方法，通过简单地用相机拍摄图像就能实现3D重建。由此产生的基于图像的方法具有高度的自由度，因为硬件和软件可以采用市售产品，并且可以根据植物的形状和大小使用一台或多台相机。基于图像的方法的优点是，只要已经拍摄了图像，就可以随时进行3D重建，并且可以从2D图像和3D点云观察、测量和分析所需的位置。我们开发的设备能够使用这种方法对高度从几毫米到2.4米的植物进行3D测量和建模。本文介绍了该设备、其组成原理以及从中获得的模型的精度。
