Images from Photogrammetric Survey Work at Minsden Chapel, Hertfordshire, May 2021 and October 2022

SUMO Geosurveys, 2023. https://doi.org/10.5284/1103327. How to cite using this DOI

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https://doi.org/10.5284/1103327
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SUMO Geosurveys (2023) Images from Photogrammetric Survey Work at Minsden Chapel, Hertfordshire, May 2021 and October 2022 [data-set]. York: Archaeology Data Service [distributor] https://doi.org/10.5284/1103327

Data copyright © SUMO Geosurveys unless otherwise stated

This work is licensed under a Creative Commons Attribution 4.0 International License.
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Resource identifiers

Digital Object Identifiers

Digital Object Identifiers (DOIs) are persistent identifiers which can be used to consistently and accurately reference digital objects and/or content. The DOIs provide a way for the ADS resources to be cited in a similar fashion to traditional scholarly materials. More information on DOIs at the ADS can be found on our help page.

Citing this DOI

The updated Crossref DOI Display guidelines recommend that DOIs should be displayed in the following format:

https://doi.org/10.5284/1103327
Sample Citation for this DOI

SUMO Geosurveys (2023) Images from Photogrammetric Survey Work at Minsden Chapel, Hertfordshire, May 2021 and October 2022 [data-set]. York: Archaeology Data Service [distributor] https://doi.org/10.5284/1103327

Introduction

Horizontal/ oblique shot of Minsden Chapel during 2021 survey
Horizontal/ oblique shot of Minsden Chapel during 2021 survey

This collection comprises images from a Photogrammetry Survey at Minsden Chapel, Hertfordshire which was undertaken by SUMO Geosurveys.

Two photogrammetric surveys were conducted at Minsden Chapel in order to record the historic structure prior and subsequent to restoration works. The first survey was conducted in May 2021 and the second in October 2022. The main outputs of elevations and orthophotos have been included in this digital archive, along with a detailed selection of the photogrammetry photographs from each of the surveys.

The surveys involved the placement of target mats around the perimeter of the chapel, the locations of which were recorded using a Trimble GPS unit to facilitate georeferencing to OS co-ordinates. Following this, a UAS (Unmanned Aircraft Systems DJI Mavic 2 Pro and DJI Mavic Mini 3) was operated above, and around, the site. Photographs, taken in RAW format, were captured at regular intervals with an overlap of more than 60 percent between images. The flights included a grid over the monument to capture vertical photos, across each elevation to capture horizontal photos, and obliques around the edges and wall tops to tie the model together.

The photographs were converted to JPEGs in the office and processed using Agisoft Metashape to produce a digital 3D model. Elevations, orthophotos, and DEMs (Digital Elevation Models) were generated from the model.

The survey successfully produced a photographic and photogrammetric record of Minsden Chapel prior and subsequent to restoration works.


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