3D Photogrammetric-Data for PL05/02-20

<p>Research data (*.las, *.ply and *.obj format) which was obtained by Photogrammetric/Computer Vision 3D digitization as well as original images which were the base for the 3D reconstruction process. </p><p>Explanation about the 3D data format: </p><p>Las </p><p> (Is the normal data format for laser scanned point cloud data and also for photogrammetric 3D model.) </p><p>Ply or Ply + jpg </p><p> (The software RealityCapture encoded texture mesh in a single ply file while the software Agisoft metashape exported textured mesh in ply format + .jpg.) </p><p>Obj + mtl + jpg </p><p> (Obj stores a texture mesh together with mtl and jpg file. Obj file contains information of geometric vertices, texture vertices, vertex normal, polygon face element etc. The Mtl file defines the texture information of the faces. Mtl normally refers to a jpg for storing the actual texture.) </p><p>Explanation about the mask image (if available): </p><p>To avoid lots of background information in the 3D reconstruction process, well-aligned images to generate a rough model were applied. Afterwards a mask for each image could be calculated according to the 3D model. In the next step, original images together with the corresponding masks are applied to implement the reconstruction, which is free from the influence of the background information. </p><p>This dataset is part of the digital gyroscope collection. For more information about
the collection and its creation, please see the documentation dataset:
<i>Niklaus, Maria, 2021, "Information about the Gyrolog data repository",
<a href="https://doi.org/10.18419/darus-821">doi: 10.18419/darus-821</a>, DaRUS.</i></p><p><b>To refer to the whole collection: Wagner, Jörg F.; Ceranski, Beate; Fritsch, Dieter; Mammadov, Gasim; Niklaus, Maria; Schweizer, Timo; Simon, Sven; Zhan, Kun, 2021, "Digital Gyroscope Collection Created by the Project 'Gyrolog'", <a href="https://doi.org/10.18419/darus-gyrolog">doi: 10.18419/darus-gyrolog</a>, DaRUS.</b></p>

<p>本数据集包含通过摄影测量/计算机视觉三维数字化手段获取的研究数据（格式为*.las、*.ply及*.obj），以及用于支撑三维重建流程的原始影像。</p><p>三维数据格式说明如下：</p><p>*.las格式</p><p>（该格式是激光扫描点云数据以及摄影测量三维模型的通用标准数据格式）</p><p>*.ply格式或*.ply+*.jpg组合</p><p>（RealityCapture软件会将带纹理网格数据编码至单个ply文件中；而Agisoft Metashape软件则将带纹理网格以ply格式与jpg格式文件分离导出）</p><p>*.obj+*.mtl+*.jpg组合</p><p>（obj文件可将带纹理网格与mtl、jpg文件整合存储。obj文件包含几何顶点、纹理顶点、顶点法线、多边形面元素等信息；mtl文件用于定义网格面的纹理属性，通常会关联jpg格式的实际纹理图像文件）</p><p>掩膜图像说明（若数据集包含该类文件）：</p><p>为规避三维重建流程中大量背景信息的干扰，本数据集首先采用对齐良好的影像生成粗略三维模型，随后基于该模型为每张原始影像计算专属掩膜。后续重建流程将结合原始影像与对应掩膜进行，从而消除背景信息对重建结果的影响。</p><p>本数据集属于数字陀螺仪数据集合集的一部分。如需了解该合集的详细信息及构建过程，请参阅以下文档数据集：<i>Niklaus, Maria, 2021, "Information about the Gyrolog data repository", <a href="https://doi.org/10.18419/darus-821">doi: 10.18419/darus-821</a>, DaRUS.</i></p><p><b>若需引用该完整合集，请参考：Wagner, Jörg F.; Ceranski, Beate; Fritsch, Dieter; Mammadov, Gasim; Niklaus, Maria; Schweizer, Timo; Simon, Sven; Zhan, Kun, 2021, "Digital Gyroscope Collection Created by the Project 'Gyrolog'", <a href="https://doi.org/10.18419/darus-gyrolog">doi: 10.18419/darus-gyrolog</a>, DaRUS.</b></p>