Virtual Reconstruction 3.0: New Approach of Web-based Visualisation and Documentation of Lost Cultural Heritage Daniel Dworak 1,2(B ) and Piotr Kuroczy´ nski 3 1 Institute of Information Technology, Lodz University of Technology,  L´od´ z, Poland daniel.dworak@dokt.p.lodz.pl 2 Center for Media and Interactivity, Justus Liebig University Giessen, Giessen, Germany 3 Herder Institute for Historical Research on East Central Europe, Marburg, Germany piotr.kuroczynski@herder-institut.de Abstract. The paper presents the project entitled “Virtual Reconstruc- tions in Transnational Research Environments the Portal: ‘Palaces and Parks in former East Prussia”’ in the light of the Semantic Web and Open Source technologies. The researches are focused on certification, classifi- cation, annotation, storage and visualisation of 3D data sets, proposing methodology of the computer-based 3D computer reconstruction of Cul- tural Heritage, which are still lacking. The multinational and interdisci- plinary project with interactive 3D models being part of a semantic data model, is concerned with designing a Virtual Research Environment. Our approach affects the entire process of digital 3D reconstruction with the development of an XML schema called Cultural Heritage Markup Lan- guage as a groundwork for an application ontology. The results bring new insights into areas such as effective data acqui- sition, documentation, semantic 3D modelling and visualisation and data management. They may be useful for the creation of Virtual Environ- ments and other forms of Cultural Heritage’s interactive presentation that employ open source visualisations standards (e.g. WebGL technol- ogy). An aspect that needs to be improved concerns coding and upload- ing large 3D data sets using alternative formats, with an emphasis on art and architectural models. We have developed a technique for coding, long-term storing and decoding 3D geometrical data in 2D PNG files, which are characterised by small size and lossless compression. 1 Introduction The art and architectural representation, as well as the research in the field of art history, are traditionally based on iconographic sources and 3D models. The development of the Computer Aided Design software accompanied by the potential growth of the counting performance of the computers led to increased c  Springer International Publishing AG 2016 M. Ioannides et al. (Eds.): EuroMed 2016, Part I, LNCS 10058, pp. 292–306, 2016. DOI: 10.1007/978-3-319-48496-9 24