3D Photogrammetric-Data for WK10-10

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. Explanation about the 3D data format: Las (Is the normal data format for laser scanned point cloud data and also for photogrammetric 3D model.) Ply or Ply + jpg (The software RealityCapture encoded texture mesh in a single ply file while the software Agisoft metashape exported textured mesh in ply format + .jpg.) Obj + mtl + jpg (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.) Explanation about the mask image (if available): 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. This dataset is part of the digital gyroscope collection. For more information about the collection and its creation, please see the documentation dataset: Niklaus, Maria, 2021, "Information about the Gyrolog data repository", doi: 10.18419/darus-821, DaRUS.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'", doi: 10.18419/darus-gyrolog, DaRUS.

本数据集涵盖通过摄影测量（Photogrammetric）与计算机视觉（Computer Vision）三维数字化技术采集的研究数据（格式为*.las、*.ply及*.obj），以及作为三维重建核心基础的原始图像。

关于三维数据格式的详细说明如下：
1. *.las格式（LAS）：为激光扫描点云数据及摄影测量三维模型的通用标准数据格式。
2. *.ply格式或*.ply + *.jpg格式：RealityCapture软件可将纹理网格编码至单个PLY文件内；而Agisoft Metashape软件则将纹理网格导出为*.ply格式文件搭配*.jpg格式纹理附属文件。
3. *.obj + *.mtl + *.jpg格式：OBJ文件可存储纹理网格，并配套MTL与JPG文件。其中，OBJ文件包含几何顶点、纹理顶点、顶点法线、多边形面元素等核心信息；MTL文件用于定义面片的纹理属性，通常会关联JPG文件以存储实际纹理数据。

关于掩码图像（若可用）的说明：为规避三维重建流程中引入冗余背景信息，首先采用经过精确配准的原始图像生成粗略三维模型，随后可基于该模型为每张图像计算对应的专属掩码。后续重建流程将原始图像与其对应掩码结合使用，可彻底消除背景信息对重建结果的干扰。

本数据集为数字陀螺仪馆藏的组成部分。如需了解该馆藏的完整信息及其构建背景，请参阅数据集配套文档：Niklaus, Maria, 2021, "Gyrolog数据仓库相关信息", doi: 10.18419/darus-821, DaRUS。如需引用整个馆藏，请参考如下文献：Wagner, Jörg F.; Ceranski, Beate; Fritsch, Dieter; Mammadov, Gasim; Niklaus, Maria; Schweizer, Timo; Simon, Sven; Zhan, Kun, 2021, "基于‘Gyrolog’项目构建的数字陀螺仪馆藏", doi: 10.18419/darus-gyrolog, DaRUS。