Reflectance Transformation Imaging (RTI) data collected from a Tudor/Stuart purse and pincushion decorated with metal embroidery
Description
Reflectance Transformation Imaging (RTI) data obtained from a Tudor/Stuart purse and pincushion from the V&A collections (T.52-1954)
Additional details
Funding
Dates
- Collected
-
2024-01
Research focus
- Research focus Title
- Reflectance Transformation Imaging (RTI) data of Tudor/Stuart purse and pincushion
- Research focus Category
- Object/artwork
- Research focus Description
-
Research focuses on the change of colour of metal embroidery of Tudor/Stuart purse and pincushion due to degradation, for PERCEIVE
- Research focus Reference Image URL
- https://collections.vam.ac.uk/item/O74996/purse-unknown/
Research activity
- Research Activity Type
- Object Examination/Digital image-video acquisition
- Technique
- Reflectance Transformation Imaging (RTI)
- Technique Category
- 3D imaging
- Method Description
-
Reflectance Transformation Imaging (RTI) is a new imaging technique that creates hyper-realistic digital surrogates that are interactively controlled by the viewer. This new method uses multiple digital images of a static subject (for example a dress or another museum object) collected from a fixed camera position. Each image is lit from a slightly different angle, and when the images are combined in a specific software the viewer can virtually control the direction of the light in order to reveal different aspects of the object.
- Tool / Equipment (or Software) Description
-
Sony camera (α7R IV 35mm full-frame camera with 61.0MP) with an E-mount medium telephoto macro lens with built-in image stabilization (FE 90mm F2.8 Macro G OSS) and a Profoto A10 Flash.
The software is RTIViewer
- Tool / Equipment (or Software) reference
- https://culturalheritageimaging.org/What_We_Offer/Downloads/View/index.html
- ROI or target area or spot size
- Full object
- Examination Methodology
-
36 images taken in total, with the light rotating by 30 degrees each step, in three tiers, i.e. three full 360 rotations.
- Examination Methodology Reference
- https://culturalheritageimaging.org/Technologies/RTI/
- Equipment setup - Experimental Reference
- https://www.sony.co.uk/electronics/interchangeable-lens-cameras/ilce-7rm4 and https://www.sony.co.uk/store/product/sel90m28g.syx/FE-90mm-F2-8-Macro-G-OSS and https://www.wexphotovideo.com/profoto-a10-sony-1751198/
Supplementary information on Object Examination
- Object Examination Scale
- Other
- Examination Class or Type
- Other
- Specific Scope linked to the Project
- Development of a model for the virtual reconstruction of the original appearance of the metal embroidery
- Measurable Entity / Property
- Visual appearance
- Material Category
- Textiles