Computational Imaging Workshop
VHN: Ireland 2015, Maynooth University, An Foras Feasa
20 November 2015, 10am-3pm


3D Recording is nowadays a necessary component in the preservation, understanding, analysis and presentation of cultural heritage. Fieldwork projects, research centres, and heritage institutions are increasingly employing digital recording methods not only as a means to present information to the public, but also to augment conventional records and enhance research outcomes.

The main aim of this workshop is to introduce participants to the capabilities of computational imaging for recording, visualising and analysing buildings’ and objects’ three-dimensional properties. The theoretical part of the workshop will provide the fundamental concepts and the data capture and processing methods applied to each technique, referring to characteristic examples and applications. During the practical part of the workshop, participants will get hands-on experience by performing all stages involved in 3D recording, i.e. capture, processing and viewing.  They will also have the chance to use pre-captured datasets, as well as produce their own records.

What is it about?

The workshop will have two main components: Photogrammetry and Reflectance Transformation Imaging (RTI). In the first half, participants will learn how to create and produce 3D recordings by using simple digital photographs and photogrammetric techniques, such as Structure From Motion (SFM), using various online and stand-alone software. The main objective of this one day workshop is to develop the skills needed to record heritage objects for virtual museums and research purposes and demonstrate best practice in 3D recording methods. In the second half, participants will learn a computational photographic method based on the raking light principle that uses digital cameras and sources of light to enhance subtle surface details (surface, texture, colour) and generate interactive relighted surface models. They will learn how to capture the datasets, process images and view the results.

Prior Knowledge and Skills

The workshop is aimed at people working in the field of digital heritage or people who are interested in developing skills in three-dimensional recording. No previous knowledge or skills are required.


Digital Camera (8Megapixels or higher)
Laptop (4GB RAM or higher)
Download prior to the workshop free software and datasets that you will use on the day.

Workshop Instructors

Dr Costas Papadopoulos, Postdoctoral Research Fellow at An Foras Feasa, Digital Heritage and 3D visualisation course leader

Gary Dempsey, Coordinator Roscommon Cross Slab Project, Coordinator Galway 3D project, 3D Designer and Programmer with RealSIm Ltd.



10:00 Introduction to 3D Recording
10:15 Introduction to Photogrammetry and Structure from Motion
11:15 Practical demonstration and hands-on practice
12:15 Hands-on Practice and Online publishing
13:15 Lunch Break
14:00 RTI Introduction. Principle of Capturing
15:00 Practical demonstration and hands-on practice
16:00 Hands-on Practice and Online publishing
17:00 End of Workshop


Fees and Registration

Participation to the Computational Imaging workshop costs €30. The registration is now open.


Eventbrite - Virtual Heritage Network: Ireland 2015