RTI-photogrammetry integration for planar surfaces capture

Aure Calvet, Xavi

Abstract

The presentation will discuss the development and use of an automated 3D scanning system, providing an affordable and efficient method for the digitisation of cultural heritage artifacts. By integrating photogrammetry with Reflectance Transformation Imaging (RTI), this system captures the intricate colour and shape of planar surfaces such as paintings, embroideries, and leather artworks with high-resolution. A simple app streamlines the image capture process ensuring consistent overlap. The image data is then processed to create highly detailed 2D and 3D representations.
The outputs can be used for detailed documentation of artwork surfaces, condition monitoring, public engagement, and the production of tactile models for an inclusive experience.
The presentation will describe the scanner’s operation and the workflow to process the data, emphasizing the refinement of surface normal maps from RTI using photogrammetric corrections, producing large-scale, accurately registered normal maps with colour data.
The capabilities of this scanner are highlighted by case studies, such as the intricate capture of 'The Grand Canal, Ascension Day' by Italian artist Canaletto. Furthering this application, we are collaborating with The Holburne Museum to adapt the methodology to the recording of fragile textiles, such as some examples of 17th century Stuart embroideries and a unique 7.6m embroidery from The New Forest Heritage Centre. This approach facilitates the documentation of these artifacts while also creating new paths for educational and interactive experiences, moving beyond the constraints of traditional display cases.

• Presentation Conference Type: Presentation / Talk
• Conference Name: 2and3D Photography - Practice and Prophecies
• Start Date: May 29, 2024
• End Date: May 31, 2024
• Deposit Date: Jun 26, 2024
• Publicly Available Date: Jun 27, 2024
• Public URL: https://uwe-repository.worktribe.com/output/12084235