$50 donation image

Need Some Help?

Let CHI experts advise you on your imaging challenge. CHI offers customized consulting services to both institutional and private clients, with special rates for nonprofit organizations. Projects of all sizes can be accommodated. Learn more…

Question? Ask on the CHI Forums

CHI offers a free discussion forums site where you can share your questions, insights, and issues as you work with Reflectance Transformation Imaging (RTI). Join the conversation!

RTI Workflow Materials

» Capture

  • Download the guide and the glossary
  • Watch the instructional videos

» Highlight Capture Kit

  • Order the RTI Starter Kit

» Process: RTIBuilder

  • Download the guide and example files
  • Download RTIBuilder

» View: RTIViewer

  • Download the guide and example files
  • Download RTIViewer

Capture

Learn how to capture your own image set to produce RTI images by following these steps and using the materials listed on this page.

1. Download the Free RTI Capture Guide and RTI Glossary

PDF icon
RTI: Guide To Highlight Image Capture (2.2 MB)
Document Version 2.0
This is a major update of the original v1.1 guide, with new features, enhanced descriptions, and more how-to illustrations. Describes the camera, lighting, software, object and reflective sphere setup and capture sequence process.
CHI Archive icon Looking for the previous version (v 1.1) of the English language guide?
See our Archive area.

espanol icon Imágenes por Transformación de Reflectancia: Guióa Para La Captura de Imágenes Utilizando
Luces Portátiles, VersiĆ³n 2.0SP

This is a link to our Spanish page, which includes the latest Spanish translation of the Capture guide, v 2.0.
Thanks to volunteers Ana Nieves and Silvia Manrique for their translation efforts!
PDF icon Glossary of Photographic and Technical Terms for RTI (308 KB)
Document Version 1.0
Defines and explains terms related to the setup, capture, and processing of RTI images.

2. Watch These Instructional Videos

This 3-minute video explains the basic factors governing light positioning for a horizontal RTI data capture.

Light Positioning for Horizontal RTI Data Capture (HD-1080p) from Cultural Heritage Imaging.

This 4-minute video explains the light positioning setup for a vertical RTI data capture.

Light Positioning for Vertical RTI Data Capture from Cultural Heritage Imaging.

This 3-minute video describes the overall process of how to capture RTI images using the highlight method.

Performing a Reflectance Transformation Imaging (RTI) Data Capture from Cultural Heritage Imaging.

Note: The entire RTI capture process is described in the RTI: Guide to RTI Highlight Image Capture, which is available for download from this page.

3. Order the RTI Highlight Capture Starter Kit

Our starter kit is designed to get you up and running quickly when you are ready to apply Reflectance Transformation Imaging (RTI). It contains the physical parts you need to begin capturing RTI images using the highlight process. Order the Starter Kit…

Notes and Acknowledgments

Note: Please see the RTI Capture Guide for more complete acknowledgments.

These how-to-capture materials were funded in part by a grant from the National Park Service and the National Center for Preservation Technology and Training. Updates to the materials were made possible by a grant from the Institute of Museum and Library Services (IMLS) 21st Century Museum Professionals (21MP) Grant Program.

The contents are solely the responsibility of the authors and do not necessarily represent the official position or policies of the National Park Service, the National Center for Preservation Technology and Training, or the Institute of Museum and Library Services (IMLS) 21st Century Museum Professionals (21MP) Grant Program.

Special thanks to Judy Bogart for donating her time to lead the team that wrote the documentation for the NCPTT project.

Preparing the Penicaud enamel for an RTI capture session

Preparing a painted enamel by Nardon Penicaud, (French 1470-1542) for an RTI capture session. This RTI study revealed
a vast network of cracks, fissures, and glass disease or “crizzling”.