Laymen To The Help Of Experts: Crowdsourcing To Aid The Reassembly Of Ancient Frescoes

Lead Research Organisation: University College London
Department Name: Computer Science

Abstract

Reconstruction of fragmented objects is of great interest in archaeology, where artefacts are often found in a fractured state, and the effort of manually putting the broken pieces together represents a significant amount of time and resources. Representative of this problem is our work on documenting and reconstructing fragments of Late-Bronze-Age wall paintings from the site of Akrotiri on the volcanic island of Thera (modern-day Santorini, Greece). As is common in archaeological finds, the wall paintings are excavated as tens of thousands of pieces, and searching for matches is a daunting manual process that dwarfs the available resources.

In a previous project we have contributed methods to acquire object fragments efficiently, identify pairwise matches between fragments, interactively refine automatically suggested matches and automatically assemble them into larger clusters. However, unavoidable error sources in acquisition and processing, but also physical influences, such a erosion and other damage over the last 3,500 years, lead to uncertainty in identifying matches between fragments. We find that humans are required to sift the automated match suggestions and that without massively parallelising and without introducing redundancy in the manual sifting, there will always be a substantial number of matches go unnoticed.

This work proposes a crowdsourcing solution to obtain this goal. We believe that a key novelty lies in the fact that we are trying to let non-expert solve a problem in the digital domain that normally requires experts to operate in the physical domain. We believe that we are excellently positioned to turn this into a high-impact project with generalisable outcomes.

Planned Impact

The project will be conducted in close collaboration with the Akrotiri excavation (who provides space, expert time and access to frescoes) and with Microtask Oy, a very successful startup company specialised on commercial crowdsourcing (Microtask will consult the principal investigator free of charge); Microtask have received significant attention for their digitisation project with the National Library of Finland (http://www.microtask.com/media). From the beginning on, this will ensure that the scope of the project will stay relevant and that the execution is technically sound.

While there are currently no plans for a direct commercialisation during the two-year run time of this project, Microtask have indicated to be interested in helping with a commercialisation beyond the run time of this project.

The Akrotiri Excavation is hoping to be able to continue using our system as a key element of upcoming assembly phases at the site.

In addition, to identify applicable problem domains beyond fresco reassembly as such, we will:-

* Actively seek contact with conservators and archaeologists who face assembly problems as well. In fact, we previously already received requests from curators that work with various broken artefacts, ranging from flint stone figurines, over human bones, to plaster statuettes, tomb stones, papyri, and even fragments of entire buildings. While these objects are typically hard to digitise with our current acquisition pipeline, human help in the match finding task may pose weaker requirements on the digitisation phase, so that our crowdsourcing approach could allow for the assembly of artefacts that otherwise would remain fragmented, be it due to time and money constraints, or because of the scale of the problem.

* Conduct mini-workshops at the upcoming Griphos Seminars at Akrotiri, to brainstorm with conservators and archaeologists on additional opportunities.

* Follow traditional scientific publication strategies to advertise our work.

The larger consortium of participants in the Griphos project will continue exploring additional funding sources, in Greece, the UK, Europe and the US. The Akrotiri excavation has already identified a fresco (from building Xeste 3, room 7) that will be put aside exclusively for our research. Provided sufficient funding is found, Akrotiri would dedicate space and two conservators to work with us on improving our system and to study the assembly procedure under fully controlled conditions, rather than having to conduct our research in parallel to the conservative assembly procedure. If this plan succeeds (earliest in summer 2012), it would offer an additional testbed for the research planned in this proposal.

With respect to a broader audience, the Griphos project has regularly attracted attention in the international press, with articles on various web portals, but also general newspapers, including the Philadelphia Inquirer (a two-page feature), EPOC (a German science magazine which is part of Scientific American) and various Greek newspapers. We will continue to capitalise on the general attractiveness of the subject, in the hope to not only inform a broader audience, but also to make new connections to problem domains previously not thought to be in reach for computer technologies. We also expect that in advertising the crowdsourcing app to visitors of the Akrotiri excavation, we will gain additional visibility for crowdsourcing solutions.

On the educational side, we believe that both the RA and one of my research students who works on fresco assembly will benefit from having received training in a really exceptional problem domain.

More generally, while the immediate scope of our project is to develop a system that is geared toward the assembly of wall paintings, we intend to pursue this development with generality in mind, seeking general applications in the humanities.
 
Description 1. We developed a mobile-phone app that allows volunteers of the public to contribute to match-finding amongst fragments of shattered frescoes. By now, the software is in beta status, and that beta version is downloadable from the Apple App Store for iOS devices, and we offer an Android version for direct download.

2. The app is assisted by a central server at UCL, which is constantly running and deals out match proposals to the mobile clients, to collect the volunteers' feedback on individual match configurations.

3. In tests with a comparatively small number of fresco fragments, we were able to show that even unskilled volunteers learn very quickly to assess fragment matches using our software. The surprising insight was that, even without expert feedback and advice, volunteers' performance in identifying correct matches increased over time, simply by continuing using the software.

4. We scanned fragments of an artificially created test fresco and created a high-quality digital database of 3D models of the fresco fragments. Many of our experiments used this database, and we are currently preparing to provide the database to other researchers via open access soon.

5. Through many public presentations, including key note speeches at international conferences, we raised awareness of how computer science and humanities can team up to solve problems in cultural-heritage preservation. Our activities directly resulted in intensified bonds between engineering and humanities faculties, as well as the creation of consortia for joint grant proposals to work on questions in digital cultural-heritage acquisition and preservation.
Exploitation Route First and foremost, the system and methods developed aim at more efficient reassembly of broken historic wallpaintings. We know of a number of excavations that would be keen to use such a system, once its quality and cost-effectiveness are proven.

Future analysis will show what parameters within the crowdsourcing mobile-phone app affect user performance. (Such experiments could not be completed yet, due to limited access to an untouched historic wallpainting to conduct a large-scale study.) We anticipate that the respective insights will inform the increasingly popular field of crowdsourced problem solving.

We hope that, with our prototype software, we helped promoting the field of game-like incentive models for crowdsourcing. The goal is that volunteers contribute to solving problems that are hard for computers, by seemingly playing a computer game that in reality gathers partial problem solutions from the users.
Sectors Digital/Communication/Information Technologies (including Software),Education,Leisure Activities, including Sports, Recreation and Tourism,Culture, Heritage, Museums and Collections

URL http://reality.cs.ucl.ac.uk/projects/griphos/
 
Description The research, while unfunded by now, is currently still active (supported by stretching other, existing resources as much as justifiable). While further direct collaboration with the Akrotiri Excavation is currently on hold, due to the financial situation of Greece in general, and of the excavation in particular, we are currently in the process of continuing related work with other partners from the heritage sector. In summary, the following forms of impact have been achieved: 1) New connections created between engineers and humanities scholars, not just within our own institutions, but also elsewhere, as a consequence of public engagement. 2) In particular, I was invited to join the Steering Board of the Eurographics Workshop on Graphics and Cultural Heritage, a conference that sees the two areas on equal footings and promotes trans-disciplinary works between the two. 3) Similarly, I was invited to join the Association for Historical and Fine Arts Photography's (AHFAP) special interest group Libraries and Archives Imaging, where I am now actively helping to shape the digital future of archives and memory institutions. 4) New content for a taught module to raise awareness amongst students for the potential of technology in arts and cultural heritage. 5) Creation of consortia for joint grant proposals in the domain of digital cultural-heritage preservation. 6) A two-months sabbatical visit to the cultural heritage digitisation division CultLab3D of Fraunhofer Darmstadt, with the goal of developing industry-scale solutions for the heritage domain. 7) I am regularly consulting conservators in the UK and elsewhere, based on the experiences I gathered on the reconstruction of fractured objects. Last, this included the reconstruction of the National Trust's Clandon House, which was substantially damaged in a fire in April 2015. One of the most precious features of Clandon House was a Baroque stucco ceiling, which is now shattered into pieces buried under the debris. We are currently investigating whether the methods developed for fresco reassembly can be applied to the stucco reconstruction problem as well.
Sector Digital/Communication/Information Technologies (including Software),Education,Culture, Heritage, Museums and Collections
Impact Types Cultural,Economic

 
Description Member of AHFAP SIG Imaging & Visualisation
Geographic Reach National 
Policy Influence Type Membership of a guideline committee
 
Description H2020 Innovative Training Network DISTRO
Amount € 3,333,301 (EUR)
Funding ID 642841 
Organisation Marie Sklodowska-Curie Actions 
Sector Charity/Non Profit
Country Global
Start 01/2015 
End 12/2018
 
Title Synthetic Fresco Dataset 2013 
Description 3D scan of about 200 fragments of a shattered modern-day fresco painted in a Late-Bronze-Age fashion. (The shattered fresco has kindly been provided by conservators of the Akrotiri Excavation, Greece.) In contrast to an earlier database of scans of these fragments, the new one features superior scan quality and includes more of the original fragments. So far, the dataset has been shared between UCL, Princeton, University of Pennsylvania. The plan is to provide open access to the database by the end of 2014. 
Type Of Material Database/Collection of data 
Year Produced 2014 
Provided To Others? Yes  
Impact The database already provided an improved benchmark to the fresco fragment matching strategies we developed within the Griphos collaboration. It has also been used to test the crowdsourced match assessment app developed as part of my EPSRC 1st Grant Proposal. 
 
Description Griphos Collaboration 
Organisation Akrotiri Excavation, Greece
Country Greece 
Sector Charity/Non Profit 
PI Contribution Technical lead of the Griphos Project. The project entails creation of a computerised end-to-end system to reassemble shattered wallpaintings. My/our contribution included technical design of research prototypes and practical workflows, including multiple generations of fresco fragment scanners, development of novel algorithms and strategies for fragment matching and assembly, novel user interfaces to interact with assembly process, methods to effectively communicate match suggestions to conservators, crowdsourcing technology to improve match suggestions, and other contributions.
Collaborator Contribution All technical partners engaged jointly in the same activities listed as UCL's contributions above; there were little exclusive specialisations. The Greek universities advised on practical constraints and archaeological and general significance of the work. The excavations kindly provide original artefacts, space and conservator time, and engage in controlled test runs.
Impact We jointly published various papers, both at top venues in computer graphics (SIGGRAPH, SIGGRAPH Asia), as well as at topically specialised venues (VAST, Journal on Computing and Cultural Heritage, etc.). I have given many invited talk and conference keynotes on the project. News coverage includes epoc, The Philadelphia Inquirer, Slashdot, Science&Technology, and many online outlets that picked up on the original stories.
Start Year 2007
 
Description Griphos Collaboration 
Organisation National and Kapodistrian University of Athens
Country Greece 
Sector Academic/University 
PI Contribution Technical lead of the Griphos Project. The project entails creation of a computerised end-to-end system to reassemble shattered wallpaintings. My/our contribution included technical design of research prototypes and practical workflows, including multiple generations of fresco fragment scanners, development of novel algorithms and strategies for fragment matching and assembly, novel user interfaces to interact with assembly process, methods to effectively communicate match suggestions to conservators, crowdsourcing technology to improve match suggestions, and other contributions.
Collaborator Contribution All technical partners engaged jointly in the same activities listed as UCL's contributions above; there were little exclusive specialisations. The Greek universities advised on practical constraints and archaeological and general significance of the work. The excavations kindly provide original artefacts, space and conservator time, and engage in controlled test runs.
Impact We jointly published various papers, both at top venues in computer graphics (SIGGRAPH, SIGGRAPH Asia), as well as at topically specialised venues (VAST, Journal on Computing and Cultural Heritage, etc.). I have given many invited talk and conference keynotes on the project. News coverage includes epoc, The Philadelphia Inquirer, Slashdot, Science&Technology, and many online outlets that picked up on the original stories.
Start Year 2007
 
Description Griphos Collaboration 
Organisation Princeton University
Country United States 
Sector Academic/University 
PI Contribution Technical lead of the Griphos Project. The project entails creation of a computerised end-to-end system to reassemble shattered wallpaintings. My/our contribution included technical design of research prototypes and practical workflows, including multiple generations of fresco fragment scanners, development of novel algorithms and strategies for fragment matching and assembly, novel user interfaces to interact with assembly process, methods to effectively communicate match suggestions to conservators, crowdsourcing technology to improve match suggestions, and other contributions.
Collaborator Contribution All technical partners engaged jointly in the same activities listed as UCL's contributions above; there were little exclusive specialisations. The Greek universities advised on practical constraints and archaeological and general significance of the work. The excavations kindly provide original artefacts, space and conservator time, and engage in controlled test runs.
Impact We jointly published various papers, both at top venues in computer graphics (SIGGRAPH, SIGGRAPH Asia), as well as at topically specialised venues (VAST, Journal on Computing and Cultural Heritage, etc.). I have given many invited talk and conference keynotes on the project. News coverage includes epoc, The Philadelphia Inquirer, Slashdot, Science&Technology, and many online outlets that picked up on the original stories.
Start Year 2007
 
Description Griphos Collaboration 
Organisation Tongeren Excavation
Country Belgium 
Sector Charity/Non Profit 
PI Contribution Technical lead of the Griphos Project. The project entails creation of a computerised end-to-end system to reassemble shattered wallpaintings. My/our contribution included technical design of research prototypes and practical workflows, including multiple generations of fresco fragment scanners, development of novel algorithms and strategies for fragment matching and assembly, novel user interfaces to interact with assembly process, methods to effectively communicate match suggestions to conservators, crowdsourcing technology to improve match suggestions, and other contributions.
Collaborator Contribution All technical partners engaged jointly in the same activities listed as UCL's contributions above; there were little exclusive specialisations. The Greek universities advised on practical constraints and archaeological and general significance of the work. The excavations kindly provide original artefacts, space and conservator time, and engage in controlled test runs.
Impact We jointly published various papers, both at top venues in computer graphics (SIGGRAPH, SIGGRAPH Asia), as well as at topically specialised venues (VAST, Journal on Computing and Cultural Heritage, etc.). I have given many invited talk and conference keynotes on the project. News coverage includes epoc, The Philadelphia Inquirer, Slashdot, Science&Technology, and many online outlets that picked up on the original stories.
Start Year 2007
 
Description Griphos Collaboration 
Organisation University of Ioannina
Country Greece 
Sector Academic/University 
PI Contribution Technical lead of the Griphos Project. The project entails creation of a computerised end-to-end system to reassemble shattered wallpaintings. My/our contribution included technical design of research prototypes and practical workflows, including multiple generations of fresco fragment scanners, development of novel algorithms and strategies for fragment matching and assembly, novel user interfaces to interact with assembly process, methods to effectively communicate match suggestions to conservators, crowdsourcing technology to improve match suggestions, and other contributions.
Collaborator Contribution All technical partners engaged jointly in the same activities listed as UCL's contributions above; there were little exclusive specialisations. The Greek universities advised on practical constraints and archaeological and general significance of the work. The excavations kindly provide original artefacts, space and conservator time, and engage in controlled test runs.
Impact We jointly published various papers, both at top venues in computer graphics (SIGGRAPH, SIGGRAPH Asia), as well as at topically specialised venues (VAST, Journal on Computing and Cultural Heritage, etc.). I have given many invited talk and conference keynotes on the project. News coverage includes epoc, The Philadelphia Inquirer, Slashdot, Science&Technology, and many online outlets that picked up on the original stories.
Start Year 2007
 
Description Griphos Collaboration 
Organisation University of Leuven
Country Belgium 
Sector Academic/University 
PI Contribution Technical lead of the Griphos Project. The project entails creation of a computerised end-to-end system to reassemble shattered wallpaintings. My/our contribution included technical design of research prototypes and practical workflows, including multiple generations of fresco fragment scanners, development of novel algorithms and strategies for fragment matching and assembly, novel user interfaces to interact with assembly process, methods to effectively communicate match suggestions to conservators, crowdsourcing technology to improve match suggestions, and other contributions.
Collaborator Contribution All technical partners engaged jointly in the same activities listed as UCL's contributions above; there were little exclusive specialisations. The Greek universities advised on practical constraints and archaeological and general significance of the work. The excavations kindly provide original artefacts, space and conservator time, and engage in controlled test runs.
Impact We jointly published various papers, both at top venues in computer graphics (SIGGRAPH, SIGGRAPH Asia), as well as at topically specialised venues (VAST, Journal on Computing and Cultural Heritage, etc.). I have given many invited talk and conference keynotes on the project. News coverage includes epoc, The Philadelphia Inquirer, Slashdot, Science&Technology, and many online outlets that picked up on the original stories.
Start Year 2007
 
Description Griphos Collaboration 
Organisation University of Pennsylvania
Country United States 
Sector Academic/University 
PI Contribution Technical lead of the Griphos Project. The project entails creation of a computerised end-to-end system to reassemble shattered wallpaintings. My/our contribution included technical design of research prototypes and practical workflows, including multiple generations of fresco fragment scanners, development of novel algorithms and strategies for fragment matching and assembly, novel user interfaces to interact with assembly process, methods to effectively communicate match suggestions to conservators, crowdsourcing technology to improve match suggestions, and other contributions.
Collaborator Contribution All technical partners engaged jointly in the same activities listed as UCL's contributions above; there were little exclusive specialisations. The Greek universities advised on practical constraints and archaeological and general significance of the work. The excavations kindly provide original artefacts, space and conservator time, and engage in controlled test runs.
Impact We jointly published various papers, both at top venues in computer graphics (SIGGRAPH, SIGGRAPH Asia), as well as at topically specialised venues (VAST, Journal on Computing and Cultural Heritage, etc.). I have given many invited talk and conference keynotes on the project. News coverage includes epoc, The Philadelphia Inquirer, Slashdot, Science&Technology, and many online outlets that picked up on the original stories.
Start Year 2007
 
Description Yale University 
Organisation Yale University
Department Yale Center for British Art
Country United States 
Sector Academic/University 
PI Contribution General expertise on cultural heritage applications and, specifically, on computational analysis of cultural heritage. We also provided software components for Yale's open-source application "Hyper3D". For the Yale Center for British Art, we acquired a 3D dataset of a marble bust of Alexander Pope for further analysis.
Collaborator Contribution General expertise on cultural heritage applications and, specifically, on computational analysis of cultural heritage. Yale also hosted one of my research students while he was contributing to their open-source application "Hyper3D". Yale Center for British Art provided access to a bust of Alexander Pope.
Impact Open-source software Hyper3D. Joint publication of a state-of-the-art-report at the Eurographics Workshop on Graphics and Cultural Heritage.
Start Year 2013
 
Description Yale University 
Organisation Yale University
Country United States 
Sector Academic/University 
PI Contribution General expertise on cultural heritage applications and, specifically, on computational analysis of cultural heritage. We also provided software components for Yale's open-source application "Hyper3D". For the Yale Center for British Art, we acquired a 3D dataset of a marble bust of Alexander Pope for further analysis.
Collaborator Contribution General expertise on cultural heritage applications and, specifically, on computational analysis of cultural heritage. Yale also hosted one of my research students while he was contributing to their open-source application "Hyper3D". Yale Center for British Art provided access to a bust of Alexander Pope.
Impact Open-source software Hyper3D. Joint publication of a state-of-the-art-report at the Eurographics Workshop on Graphics and Cultural Heritage.
Start Year 2013
 
Title Beta version of Crowdsourcing iPhone App for Fresco Fragment Match Sifting 
Description The software (currently in beta status) is a crowdsourcing "game" that volunteers in the public can play to provide additional feedback to our fresco fragment match retrieval algorithms. The app connects to a central server running at UCL that sends fragment match suggestions to the volunteers' phones and gathers responses for further statistical analysis. 
Type Of Technology Software 
Year Produced 2014 
Impact Initial studies in November 2013, using scans of fragments of a synthetic fresco, have shown that the user feedback collected that way is effective and helps increasing the quality of our match suggestions to conservators who reassemble a shattered wallpainting. The next step of evaluation, required to finalise the app, will be to run the system alongside the assembly of a Late-Bronze-Age fresco that has not been assembled previously. However, due to local constraints on site, it was not possible to conduct this experiment with our partners at the Akrotiri excavation. We still plan to run the fully-fledged study as soon as the situation on site has changed (hopefully in summer 2015), which will aim at including the regular visitors to the Akrotiri excavation as test subjects, too. Ultimately, we believe that the software will be able to assist various assembly projects in cultural heritage applications, and that its development will spawn additional, similar projects. 
URL http://reality.cs.ucl.ac.uk/projects/griphos
 
Description Guest Lecture at UCL Institute for Sustainable Heritage, 11/11/2016 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach Local
Primary Audience Professional Practitioners
Results and Impact The guest lecture on "Computational Analysis in Cultural-Heritage Applications" led to an exceptionally inspired Q&A session afterwards. Multiple audience members told me afterwards that the presentation changed the way they thought about heritage digitisation. In addition, new academic ties to University of Brighton were created, an invitation to The National Archives followed, and a new collaboration with The Natural History Museum was an immediate result of my presentation.
Year(s) Of Engagement Activity 2016
URL http://www.wholesem.ac.uk/bartlett/heritage/heritage-events/guest-lecture-tim-weyrich
 
Description Invited Speaker Curious Images, 9/12/2014 
Form Of Engagement Activity Participation in an activity, workshop or similar
Part Of Official Scheme? No
Geographic Reach National
Primary Audience Professional Practitioners
Results and Impact My invited talk on Problem-Aware Digitisation of Cultural Heritage Artefacts was in the context of the British Library Labs' workshop "Curious Images", im which they sought to raise awareness for what digital methods can achieve in the heritage sector and for memory institutions.
Year(s) Of Engagement Activity 2014
 
Description Invited Speaker HiVisComp, 4/2/2016 
Form Of Engagement Activity Participation in an activity, workshop or similar
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Postgraduate students
Results and Impact I spoke at HiVisComp, the annual national gathering of the Czech visual computing community, on Computational Analysis in Cultural Heritage Applications. In addition to the Czech researchers, there were selected international attendees. Overall, I was impressed by the quality of the programme and learnt that Czech has a very healthy computer graphics and computer vision research community; I now have plans to further engage with them.
Year(s) Of Engagement Activity 2016
 
Description Invited Speaker Museums and the Web, 18/02/2014 
Form Of Engagement Activity Participation in an activity, workshop or similar
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact My invited talk at the International Workshop on Museums and the Web in Florence (MWF2014), Italy, reached a focussed groups of practitioners from the heritage sector. Most of them worked in memory institutions; some represented industry that would like to create multi-media solutions for museums. My talk was received extremely well, with deep discussions afterwards; two of the attendees even visited me in London as a result of the presentation.
Year(s) Of Engagement Activity 2014
URL http://mwf2014.museumsandtheweb.com
 
Description Invited Speaker at the Great Parchment Book Day, 25/07/2014 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach National
Primary Audience Public/other audiences
Results and Impact My invited talk at a public workshop organised by the London Metropolitan Archives was followed by a panel discussion (that I was part of), and that panel discussion seamlessly picked up on the questions I raised in my presentation, leading to intense audience contributions. The key question that dominated the discussion was whether there are viable business models to sustain cultural-heritage digitisation.

One audience member (an investment banker) offered to help with fund raising. Members of three UK memory institutions, including the British Library, immediately offered to make materials available for further studies.
Year(s) Of Engagement Activity 2014
URL http://www.greatparchmentbook.org/2014/06/23/programme-announced-for-great-parchment-book-day/
 
Description Invited Speaker at the RIVIC Graduate School, 14/04/2014 
Form Of Engagement Activity Participation in an activity, workshop or similar
Part Of Official Scheme? No
Geographic Reach Regional
Primary Audience Postgraduate students
Results and Impact I spoke at the RIVIC Graduate School, Swansea University, on Bespoke Computer Graphics Systems for Cultural Heritage Applications. The presentation led to a lively discussion, as some of the computer science graduate students in attendance also worked on cultural-heritage applications, while other were entirely new to the problem domain.

Prof. Paul Rosin and I decided to collaborate on cultural-heritage problems in the future.
Year(s) Of Engagement Activity 2014
 
Description Invited Talk at CNR-ISTI, Pisa, 17/02/2014 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Other academic audiences (collaborators, peers etc.)
Results and Impact My presentation was particularly directed at conveying to staff at CNR-ISTI, Pisa, what my personal approach on heritage computing is. The audience consisted of key members of the Italian cultural-heritage computing scene, arguably world leaders in their field.

After the presentation, we entered fruitful discussions on prospective grant proposals, and, in fact, there will be at least one grant proposal submission (to H2020 in April 2015) as a direct result of my visit to this group in Pisa.
Year(s) Of Engagement Activity 2014
 
Description Invited Talk at Cultural Heritage Imaging (CHI) Work- shop, King's College London, 6/2/2020 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact The event was attended by practitioners who already use tried and tested digital methods in their heritage work. My talk triggered an interesting discussion of how cutting-edge research methodologies can be made accessible to practitioners as well.
Year(s) Of Engagement Activity 2020
 
Description Invited Talk at EPFL Lausanne, 07/11/2014 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Postgraduate students
Results and Impact Talk on Computational Analysis in Cultural Heritage Applications sparked interesting discussion of how engineers can help the cultural-heritage domain while still ensuring sufficient research relevance for their own domain.

Ensuing email exchange with EPFL graduate student on the acquisition of oil paintings.
Year(s) Of Engagement Activity 2014
 
Description Invited Talk at Escola de Matemática Aplicada da Fundação Getúlio Vargas (FGV/EMAp), Rio de Janeiro, Brazil, 5/12/2019 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Audience had experience in humanities and heritage sector and were keen to learn more about technological possibilities.
Year(s) Of Engagement Activity 2019
 
Description Invited Talk at Imperial College, 28/11/2014 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach Local
Primary Audience Postgraduate students
Results and Impact I presented on Computational Analysis in Cultural Heritage Applications before graduate students and professors of Imperial College, who took great interest in my vision of how to combine research on 3D photography with impact in the cultural-heritage domain. The presentation was followed by in-depth discussions with Dr Abhijeet Ghosh, who afterwards requested (and successfully received) an EPSRC fellowship application, in which he plans to collaborate with me on appearance acquisition in the heritage sector.
Year(s) Of Engagement Activity 2014
 
Description Invited Talk at Instituto Nacional de Matemática Pura e Aplicada (IMPA), Rio de Janeiro, Brazil, 4/12/2019 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Postgraduate students
Results and Impact Talk triggered vivid discussion of challenges for engineers to engage with memory institutions.
Year(s) Of Engagement Activity 2019
 
Description Invited Talk at Queen Mary University of London, 13/03/2014 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach Local
Primary Audience Other academic audiences (collaborators, peers etc.)
Results and Impact Various members of the Computer Science department at Queen Mary attended my presentation, and the discussion afterwards showed that I stimulated interest in combining one's research topics in computer science with application domains in the humanities.

I received an invitation as PhD examiner.
Year(s) Of Engagement Activity 2014
 
Description Invited Talk at Royal Society International Scientific Seminar 
Form Of Engagement Activity Participation in an activity, workshop or similar
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Invited talk, "Computational Analysis in Cultural-Heritage Applications", at the Royal Society International Scientific Seminar, "imaging in Graphics, Vision and Beyond", Chicheley Hall, UK.
Year(s) Of Engagement Activity 2016
 
Description Invited Talk at University of Bonn, 8/12/2014 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Postgraduate students
Results and Impact I presented no Computational Analysis in Cultural Heritage Applications at the seminar of the computer graphics group at Bonn University. That group is an international leader in the field of 3D photography and appearance acquisition. My presentation on how to apply bespoke 3D photography solutions to the heritage domain was very well received; the audience showed great interest in extending their own methods to heritage problems.
Year(s) Of Engagement Activity 2014
 
Description Invited Talk at University of Siegen, 9/12/2014 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Postgraduate students
Results and Impact I presented on Computational Analysis in Cultural Heritage Applications at the seminar of the computer graphics group at Siegen University. That group is an international leader in the field of 3D sensing, particularly time-of-flight photography. My presentation on how to apply bespoke 3D photography solutions to the heritage domain was very well received; the audience showed great interest in extending their own methods to heritage problems.
Year(s) Of Engagement Activity 2014
 
Description Invited Talk at Yale's CS Departmental Talk Series, 16/07/2013 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Other academic audiences (collaborators, peers etc.)
Results and Impact Talking about Computational Analysis in Cultural Heritage Applications, I aimed at stimulate computer scientists to tackle the cultural heritage domain. However, it turned out that the talk announcement had been circulated more widely, and about half of the audience turned out to be from cultural heritage conservation. This led to a very engaged discussion afterwards.

The serendipitous event of having both conservators and computer scientists in the audience led to an exceptionally inspired discussion, with both sides visibly improving their understanding of the other side's interests, constraints and incentive models. As a direct result, so I have heard from Yale's Head of Department of Computer Science, the relations between Yale's CS Department and their Humanities intensified.
Year(s) Of Engagement Activity 2013
URL http://cpsc.yale.edu/event/cs-talktim-weyrich-ucl
 
Description Invited seminar talk at The National Archives, Kew, UK, 13/3/2017 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach Regional
Primary Audience Professional Practitioners
Results and Impact A very inspiring exchange after my presentation on "Computational Analysis in Cultural-Heritage Applications" opened up avenues for future collaboration on the restoration and digitisation of historic documents.
Year(s) Of Engagement Activity 2017
 
Description Invited talk University of Brighton, 28/2/2018 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach Regional
Primary Audience Professional Practitioners
Results and Impact Presentation on ``Digitally Reconstructing The Great Parchment Book'', at the computer science seminar of the University of Brighton, UK. Led to joint grant proposal currently being written.
Year(s) Of Engagement Activity 2018
 
Description Invited talk at Friedrich-Alexander University Erlangen-Nürnberg, 14/4/2016 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Postgraduate students
Results and Impact Invited talk at post-graduate seminar of that university. The talk was on "Problem-Aware Digitisation of Cultural Heritage Artefacts" and showcased a number of EPSRC-funded innovations in digitisation.
Year(s) Of Engagement Activity 2016
 
Description Invited talk at GRIS Kolloquium, Technical University of Darmstadt, Germany, 21/4/2016 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Postgraduate students
Results and Impact Invited talk at post-graduate seminar of that university. The talk was on "Application-Driven Appearance Digitisation" and showcased a number of EPSRC-funded innovations in digitisation and fabrication.
Year(s) Of Engagement Activity 2016
URL http://www.gris.tu-darmstadt.de/home/news/archive/index.en.htm
 
Description Invited talk at TU Darmstadt, 10/3/2016 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Postgraduate students
Results and Impact My talk on Problem-Aware Digitisation of Cultural-Heritage Artefacts at the departmental computer graphics seminar was well received. In particular, amongst the attendees were members of the cultural-heritage scanning division of Fraunhofer Darmstadt, and we had fruitful discussions that are likely to lead to a EngD studentship within the EPSRC-funded SEAHA centre.
Year(s) Of Engagement Activity 2016
 
Description Invited talk at outreach event in Chartres, France, 17/11/2017 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Public/other audiences
Results and Impact This was an invited talk, ``Restauration virtuelle du Great Parchment Book'', at the public-outreach event ``Journée d'étude -- Les rescapés du feu. L'imagerie scientifique au service des manuscrits de Chartres'', in Chartres, France, followed by a panel discussion.
Year(s) Of Engagement Activity 2017
URL https://www.irht.cnrs.fr/?q=fr/agenda/les-rescapes-du-feu-l-imagerie-scientifique-au-service-des-man...
 
Description Keynote Speech CAIP, 27/08/2013 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Other academic audiences (collaborators, peers etc.)
Results and Impact As invited speaker of the 15th International Conference on Computer Analysis of Images and Patters, my intention was to stimulate thought how computer science researchers can apply their research to the cultural-heritage domain. (The presentation was on Computational Analysis in Cultural Heritage Applications.)

Members of the CS department of the University of York expressed interest in future collaborations.
Year(s) Of Engagement Activity 2013
URL http://www.cs.york.ac.uk/cvpr/caip2013/speakers.php
 
Description Keynote Speech SIBGRAPI, 28/08/2014 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Other academic audiences (collaborators, peers etc.)
Results and Impact I gave the keynote speech at the, by far, largest computer science conference in Southern America. The audience consisted of computer scientists and electrical engineers of various sub-disciplines. The presentation has since been published on YouTube.

After my talk it became apparent that there currently is a growing interest in Cultural Heritage preservation in Brazil and other Southern American countries: many researchers engaged me in discussion on particular problems of digital preservation of both tangible and intangible cultural heritage in South America.
Year(s) Of Engagement Activity 2014
URL https://www.youtube.com/watch?v=2e-k-hwyaVg
 
Description Keynote at the 10th ACM SIGGRAPH Finnish Chapter Conference Syysgraph, 11/11/2016 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact The keynote speech was extremely well received (I rarely had such a captivated and excited audience). The largest part of the audience were practitioners from the 3D games and special-effects industry. Regardless, the cultural-heritage topic was received as everything _but_ off-topic, and many fruitful discussions, as well as potential knowledge-transfer opportunities arose in the wake of the speech.
Year(s) Of Engagement Activity 2016
URL https://www.facebook.com/events/236500343433508/
 
Description Taught module BASC2082 Technology in Arts and Cultural Heritage 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach National
Primary Audience Undergraduate students
Results and Impact I presented the problem domain and initial outcomes of the project within the newly created taught module BASC2082 Technology in Arts and Cultural Heritage, which is part of UCL's Bachelor in Arts and Sciences. The project served as a prime example of how technology can help in the cultural heritage domain, and was intended to stimulate thinking about further opportunities.

Students requested additional information on the project and enquired on possibilities to get engaged.
Year(s) Of Engagement Activity 2013,2014,2015