37º IAHS World Congress on Housing: - Universidad de Cantabria

XXXVII <strong>IAHS</strong><strong>World</strong> <strong>Congress</strong> on HousingOctober 26 – 29, 2010, Santander, SpainCODE: 1032NEW PROCESSING ALGORITHMS AND TRENDS FOREXPLOITING AND ASSESSING IMPLICIT DATA.V. Bayarri 1 y E. Castillo 21 GIM Geomatics S.L. C/ Poeta José Luís Hidalgo nº5 (con frente a C/ Jesús Cancio). 39300 Torrelavega –Cantabria. www.gim-geomatics.com. vicente.bayarri@gim-geomatics.com2 Área de Ingeniería Cartográfica, Geodesia y Fotogrametría, E.T.S.I. Caminos, Canales y Puertos, Universidadde Cantabria. Avda. Los Castros s/n, 39005, Santander. castille@unican.esKey words: building, heritage, active photogrammetry, 3D Terrestrial Laser Scanning, point clouds,3D Topology, 3D modelling, pathologies, heritage decision making, heritage problem solving.AbstractHeritage documentation for conservation has been in continuous progress upon the time. Theanalogue tools such as sketches or 2D plans has been replaced by other efficient techniqueswhen computer aided design (CAD) arose. This led one of the first major changes in referenceto documentation of buildings.Nowadays there are available several technologies, such as 3D Terrestrial Laser Scanners,which permit to collect high detailed information of the heritage. The traditionaldocumentation based on 2D and 3D representations of cultural heritage started to becomeobsolete since the techniques which are used to obtain these products don’t profit of theamount of information obtained. On the other side, a new branch is available in relation withexploiting that data volume and different research projects of 3D topology of data emerges.Data processing and interpretation involves extracting relationships and meanings that areimplicit in a set of data and expressing these in explicit form. A basic example would bederiving collapses or calculate the curvature or roughness from a map of elevation of a wall,in a continuous way. This transformation of data must be processed carefully and associatedwith specific locations.In this paper we present several types and results of exploiting 3D information of a building.Such new information can be very useful and support heritage problem solving and decisionmaking.37º <strong>IAHS</strong> <strong>World</strong> <strong>Congress</strong> On Housing Science 358