Photogrammetry data collected from a Victorian dress
Description
Photogrammetry data obtained from a Victorian dress from the V&A collections (T.7-1926)
Table of contents
2024NT5916.zip; 2024NT5917.zip; 2024NT5918.zip; 2024NT5919.zip
Additional details
Funding
Dates
- Collected
-
2024-01
Research focus
- Research focus Title
- Photogrammetry data of Victorian dress
- Research focus Category
- Object/artwork
- Research focus Description
-
Research focuses on the change of colour of pigments and dyes on Victorian dress due to degradation, for PERCEIVE
- Research focus Reference Image URL
- https://collections.vam.ac.uk/item/O122400/dress-unknown/
Research activity
- Research Activity Type
- Object Examination/Digital image-video acquisition
- Technique
- Photogrammetry
- Technique Category
- 3D imaging
- Method Description
-
Photogrammetry is based on triangulation. By taking photographs from different locations, lines of sight can be developed from each camera to points on the object that is being captured. These lines of sight are mathematically intersected to produce reliable 3-dimensional coordinates (measurements) of the points of interest on the object.
- Tool / Equipment (or Software) Description
-
Tools: Sony Alpha 7 IV, Sony 50mm f1.4 lens
Software: Agisoft Metashape Professional
- Tool / Equipment (or Software) reference
- https://www.agisoft.com/features/professional-edition/ and https://www.sony.co.uk/store/product/ilce7m4b.cec/Alpha-7-IV-full-frame-hybrid-camera
- ROI or target area or spot size
- Full object
- Examination Methodology
-
The object was mounted on a mannequin, placed in a photographic studio and lit several with continuous halogen lights that remained in the same position throughout the capture process. The lighting was kept soft and non-directional to avoid harsh shadows on object. A Sony Alpha 7 IV alongside a Sony 50mm f1.4 lens was used during capture, ensuring a >60% overlap between images in both x and y direction. The focus was set and not changed throughout the capture process. White balance was carried out using a Calibrite ColourChecker Classic.
- Examination Methodology Reference
- https://culturalheritageimaging.org/Technologies/Photogrammetry/
Supplementary information on Object Examination
- Object Examination Scale
- Other
- Examination Class or Type
- Scanning
- Specific Scope linked to the Project
- Development of a model for the virtual reconstruction of the original appearance of the dyed textile
- Measurable Entity / Property
- Visual appearance and 3D volume
- Material Category
- Textiles