GOM – Optical Measuring Techniques Product Overview

Optical Measuring Techniques

Applications in Cultural Heritage

TOPOMATIKA

INFuture2007: “Digital Information and Heritage”

Zagreb, 7-9 November 2007

2-Frame Setup / Frame 22-Frame Setup / Frame 1

3-Frame Setup / Frame 1 3-Frame Setup / Frame 2 3-Frame Setup / Frame 3

Optical Measuring Techniques - Applications in Cultural HeritageTOPOMATIKA

GOM – Optical Measuring Techniques Product Overview

ATOS3D Digitizer

TRITOP Photogrammetry

ARAMIS Deformation Analysis

ARGUS Forming Analysis

PONTOSDynamic Photogrammetry

ESPISpeckle Interferometer




ATOS3D Digitizer – Scopes of Applications

Industrial Applications· Inspection· Reverse Engineering· Rapid Prototyping

Medical Applications· Orthetics· Forensics· Medical

Computer Graphics· 3D Character Animation· Internet 3D Product Presentations

· Virtual Reality

Cultural Applications· Documentation / Research· 3D Copying / Replications· Monitoring




ATOS3D Digitizer

Features· Mobile 3D Scanner· Changeable measuring volumes· Robust, compact sensor design· Very fast measuring sequence: under 1 second

· Simple operation· Can be used as stand alone digitizer or as ATOS I XL (with TRITOP)

· Can be integrated easily in complete measuring set up, on robots or in combination with rotation tables

Stereo Camera Technique· Photogrammetric calibration · Self monitoring· Online checks· High detail resolution




ATOS Workflow

· Freehanded or automated sensor positioning (robot)

· Projection of fringe pattern

· Measurement patches consist of up to 4 million 3D points

· Automatically transformation of all measurements/different views into object coordinate system




· Results· Triangular mesh · Point cloud· Sections

ATOS Workflow




· White-Light-Measuring-System· Non-Invasive (No Laserlight)· Non-Contact

ATOS 3D Digitizer




· Variable Measuring Volumes

· Object sizes from coin to monument

· Adjustable resolution

ATOS 3D Digitizer




· Stereo-View-System· Self-Controlling-Calibration· Variable Triangulation Angels (for capturing undercuts)· Fewer measurements necessary

ATOS 3D Digitizer




· Non-Cooperative Objects Surface· Different exposure times allow to capture data on dark and bright surfaces· For glossy surfaces, data can be calculated based on the images from one camera only

ATOS 3D Digitizer




ATOS 3D Digitizer




· Data handling· Using 64-Bit Technology in combination with Linux-operating-system allows fast handling and computation of large volume data sets

ATOS 3D Digitizer




· Mobility· Laptop and TRITOP· Small suitcase for transporting

ATOS 3D Digitizer




Documentation of archaeological objectsApoxyomenos

· documentation and shape analysis during restoration process after excavation in 1999 near Losinj, a Croatian island

· Ancient greece bronze sculpture of Apoxyomenos, 4th century BC

· Topomatika d.o.o. used TRITOP and ATOS-System in cooperation with the Croatian Conservation Institute




Documentation of architectural monuments St Jacob’s Cathedral in Šibenik

· The Cathedral of St. Jakov (St. Jacob) in Šibenik is a triple nave basilica with three apses and a cupola (height of interior is 32 m). It was consecrated in 1555

· enlisted in UNESCO's world heritage in 2001

· Art-historical and geometrical documentation and shape analysis of sculptures and façade details

· Ministry of Culture RH and regional office for conservation in Šibenik




Documentation of architectural monumentsCharlesbridge

· Capturing of 3D-Shape of the statues of the Charlesbridge in Prague with TRITOP - and ATOS-Systems by the State Institute for the Care of Culture in cooperation with MCAE Systems s.r.o. in 1999

· Documentation and Monitoring of the 8m high stone statues deriving from 18th century

· App. 350 single scans were taken for the Statue of St. Vojtech




Documentation of architectural monumentsMaximilian 1´s Tomb

· Art-historical and geometrical documentation during restoration process in 2000-2003

· the 3m x 5m x 5m large cenotaph (empty tomb) was built ca. 1560 and consists of black marble, 24 reliefs of white marble as well as of bronze figures

· University of Applied Science Mainz used TRITOP and ATOS-System in cooperation with Landesbaudirektion Tyrol




Deformation Analysis / Deterioration Monitoring

· Heads of Maison Tavel, Geneva· Architectorial details, originally painted stone

· Deriving from the end of the middle age· Ecole d´íngénieurs de Genève




Deformation Analysis / Deterioration Monitoring

· 2D Images allow only a subjective estimation of damage and degradation

· The actual scan-data from 2005 were compared to scan-data of plaster moldings from 1911

· Thus a qualitative and quantitative analysis is possible




Reproduction

· Non-invasive 3D-Copying in different materials· For fragile objects, painted surfaces, etc. who are not allowed to be molded traditionally

· Scaling in different sizes possible

ReproductionSynthetic Resin

· Non-invasive 3D-Copying in different materials· For fragile objects, painted surfaces, etc. who are not allowed to be molded traditionally

· Scaling in different sizes possible· Ecole d´íngénieurs de Genève




· 2 Jaquemarts of Hotel de Ville de Fribourg· Human sized wooden painted statues articulated in order to ring a bell

· Placed outside the building· Replacement with copies necessary due to degradation· Ecole d´íngénieurs de Genève

ReproductionCNC-Milling





· Statues were scanned by the use of TRITOP and ATOS-Systems

· Ecole d´íngénieurs de Genève





· From the gained STL-Data the CAM-Software generate the toolpath for the CNC-Milling Machine

· A 4.5 axis milling device machined the statues from a lamellate-stuck larch block

· Ecole d´íngénieurs de Genève





Original, 3D-Scan-Data, CNC-Milled wooden copy, painted wooden copy - Ecole d´íngénieurs de Genève




ReproductionFoundry

· Reproduction of a gypsum bust of “Schiller” in bronze· Gaining 3D-Data of the gypsum bust· ACTech GmbH




ReproductionFoundry

· Using gained STL-Data to create a mold for the bronze foundry

· Work in progress· Bronze copy of the bust· ACTech GmbH




We would like to thank all our involved customers and partners for these projects

·Croatian Conservation Institute·University of Applied Science Mainz ·Landesbaudirektion Tyrol·GOM mbH

Acknowledgements

Thank you for your attention

[email protected]

www.topomatika.hr

GOM – Optical Measuring Techniques Product Overview

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