Meet us at CAA 2015!

Siena, Italy
Monday, March 30, 2015 (All day) to Friday, April 3, 2015 (All day)

The PRESIOUS project team will organize a workshop on Predictive Techniques for 3D Data Augmentation in Cultural Heritage at Computer Applications and Quantitative Methods in Archaeology (CAA) 2015.Based on the experience and on-going efforts within the PRESIOUS EU-funded project, this workshop attempts to present existing and on-going research in technologies and practical applications that augment the geometric data of digital CH objects by predictive generative processes guided by geometry processing, analysis and shape matching methods for 3D objects. The primary directions of the discussion will be: technologies for automatic scan completion, erosion simulation and prediction for stone monuments, and automatic object reassembly and repair of damaged and fractured CH objects.  We will also touch upon approaches to evaluate the developed new techniques from the algorithmic and archaeology-application domain. The Workshop will consist of a number of presentations accompanied by software demonstrations, each of which will last 1-1.5 hrs. A discussion session will follow. More specifically:3D Scan auto-completion attempts to predict the shape of CH objects while these are being digitized, based on incrementally available partial scans and knowledge about other scanned objects. This opens new possibilities in the digitization paradigm, where meaningful suggestions for missing data can be made, effectively minimizing the overall time and cost of the scanning procedure or avoiding scanning hard to reach or inaccessible surfaces of the original CH artefact. The talks relate the problem to partial object retrieval, non-rigid registration and self-similarity detection algorithms and explains how these can be exploited.Simulation and validation of the stone erosion process. Based on present-time surface shape, material measurements and environmental data, this talk focuses on the creation of a computer model for the simulation of the degradation process in the distant future, thus aiding the experts in making crucial preservation decisions. The talk explains how physicochemical data and the geometry of scanned objects are used to estimate and visualize the shape and texture alterations of a deteriorating stone object. Methods and practical solutions for capturing the data with precision and validating the computational model are also discussed. Automatic object reassembly and repair of damaged and fractured CH objects. This talk explores the problem of restoring fragmented and damaged cultural heritage objects, by automatically identifying and combining missing parts and inferring missing geometry via self-similarity, symmetry and existing object templates. The discussion involves innovative approaches for dealing with heavily damaged fragments and non-contacting parts, practical algorithms for robust registration and repair and presents the entire restoration pipeline, from the acquired digital collection to the extraction of the missing parts for milling to aid the physical repair process of the actual objects. Workshop speakers (tentative):3D scan auto-completion (est. time: 1h)

Simulation and validation of the stone erosion process (est. time:1h)

Automatic object reassembly and repair of damaged and fractured CH objects (est. time: 1h30m)

Discussion with inputs from the audience  (est. time:1h) Related links: