ENRICH: multi-purposE dataset for beNchmaRking In Computer vision and pHotogrammetry

A new synthetic, multi-purpose dataset - called ENRICH - for testing photogrammetric and computer vision algorithms. Compared to existing datasets, ENRICH offers higher resolution images also rendered with different lighting conditions, camera orientation, scales, and field of view. Specifically, ENRICH is composed of three sub-datasets: ENRICH-Aerial, ENRICH-Square, and ENRICH-Statue, each exhibiting different characteristics. The proposed dataset is useful for several photogrammetry and computer vision-related tasks, such as the evaluation of hand-crafted and deep learning-based local features, effects of ground control points (GCPs) configuration on the 3D accuracy, and monocular depth estimation.

Each zip file in the root is relative to a specific dataset:

- ENRICH-Aerial, is an aerial image block of the city of Launceston, Australia. The acquisition is performed by simulating a typical oblique aerial camera with five views (nadir and four oblique views).
- ENRICH-Square, is a ground-level dataset of a square captured by four cameras, each one moving on a different path with different focal length, orientation, and lighting conditions.
- ENRICH-Statue, is a ground-level dataset portraying a statue (placed in the center of the ENRICH-Square scene), acquired using four cameras moving on different paths with different focal lengths, orientations, and lighting conditions.

Be sure to check the README file in the dataset root for information on folder structure and file contents. Please refer to the related paper (https://doi.org/10.1016/j.isprsjprs.2023.03.002) for information about the generation method and the purpose of ENRICH.

一款全新的合成型多用途数据集ENRICH，用于摄影测量与计算机视觉算法的测试与验证。相较于现有数据集，ENRICH提供了更高分辨率的图像，同时涵盖了不同光照条件、相机姿态、缩放比例与视场角的变化场景。具体而言，ENRICH包含三个子数据集：ENRICH-Aerial、ENRICH-Square与ENRICH-Statue，各子数据集均具备独特的场景特性。本数据集可应用于多项摄影测量与计算机视觉相关任务，例如手工设计与基于深度学习的局部特征评估、地面控制点（Ground Control Points, GCPs）配置对三维重建精度的影响分析，以及单目深度估计任务。

数据集根目录下的每个压缩包均对应一个独立子数据集：
- ENRICH-Aerial：澳大利亚朗塞斯顿市的航空影像块数据集，通过模拟典型倾斜航空相机采集得到，包含5个视角（1个天顶视角与4个倾斜视角）。
- ENRICH-Square：广场地面级数据集，由4台相机采集得到，每台相机沿不同路径运动，并采用不同焦距、姿态与光照条件进行拍摄。
- ENRICH-Statue：雕像地面级数据集，拍摄主体为放置于ENRICH-Square场景中心的雕像，同样由4台沿不同路径运动的相机采集，且各相机采用不同焦距、姿态与光照条件完成拍摄。

请查阅数据集根目录下的README文件，以了解文件夹结构与文件内容详情。如需了解ENRICH的构建方法与应用场景，请参考相关研究论文（https://doi.org/10.1016/j.isprsjprs.2023.03.002）。