UAV Aerial Survey - Blackquarries Hill Long Barrow (ST77509320)

This data was collected via low-altitude UAV survey of Blackquarries Hill Long Barrow (ST77509320). The dataset comprises of metadata records, near-vertical photographs and a derived 3D polygonal mesh.
Known locally as the ‘Clump’ this structure is generally considered to be a long barrow, possibly Neolithic. According to Crawford (Long Barrows of the Cotswolds, 1925) the structure has been considerably mutilated by stone digging leaving only “amorphous remains”.
This dataset is intended for use in comparative analysis, for example with long barrows in similar states of decay. It is also intended to provide an initial point for time series analysis by which the ongoing deterioration of this site can be assessed.
A second driver for creating this dataset was to act as an exemplar for the standardisation of results generated via low-altitude aerial survey.
Transparency of data processing methods has been facilitated by the inclusion of unprocessed images and lens calibration photographs. This data prioritises open technologies and is accompanied by rich metadata to help ensure maximum data re-usability.
The included 3D mesh was generated using AGISoft Photoscan 1.0.4 software and is intended to act as an example of a derived data object.

本数据集通过低空无人机对布莱克夸里山长条形墓葬（ST77509320）进行巡测所收集而来。数据集包含元数据记录、近似垂直的摄影图像以及派生的三维多边形网格。

在当地被称为‘簇’，该结构通常被视为一种长条形墓葬，可能属于新石器时代。根据克劳福德（《科茨沃尔德的长条形墓葬》，1925年）所述，该结构在石材挖掘过程中遭受了严重破坏，仅留下了‘不规则的残留物’。

本数据集旨在用于比较分析，例如与类似腐烂状态的长条形墓葬进行比较。同时，它也旨在为时间序列分析提供一个初始点，从而评估该遗址的持续恶化。

创建本数据集的第二个动因是作为通过低空航空巡测生成结果标准化的范例。

通过包含未经处理的图像和镜头校准照片，数据处理的透明度得到了提升。本数据集优先考虑开放技术，并伴随丰富的元数据，以确保数据的高重用性。

所包含的三维网格采用AGISoft Photoscan 1.0.4软件生成，旨在作为派生数据对象的示例。