EPOCHE 2013 LLP ERASMUS IP

Transcription

1 EPOCHE 2013 LLP ERASMUS IP Excellence in Photogrammetry for Open Cultural Landscape & Heritage Education Project Thesis of Group A THASSOS

2 Contents Section 1: Introduction Section 2: Topography and Photogrammetry Section 3: Photogrammetric Image Processing Section 4: Digital 3D Modeling Section 5: Conclusions and Discussion Acknowledgements Bibliography

3 INTRODUCTION The EPOCHE LLP Erasmus Intensive Program IP is about the improvement of traditional methods for surveying, documenting and Web-based Education for Archaeological Sites and Cultural Landscapes & Heritage, using lowcost techniques as innovative practices under digital Photogrammetry Tools Software Techniques

4 HISTORY OF THASSOS Thassos is the northern island of Thrakiki sea, across the coast of eastern Macedonia linked its name with Thassos, son of Poseidon largest museums in northern Greece, exhibits Thassos Archaeological findings is full of trees, endless beaches exported products are minerals like marbles homeland of the famous painters, sculpturists, sophists,

5 MEASUREMENTS Facade Pillar

6 The war monument The artefact

7 PROCESSING Used softwares : PhotoModeler Scanner: high-quality 3D models measurements from photographs using your own camera Models using points, lines, edges, surfaces Automated projects, using the included target detection features used as a measurement and modeling tool in architectural, preservation, conservation Generating 3D models, elevation drawings, rectified photographs of facades Producing photo-textured 3D models

8 PhotoScan:Basic rules Use a digital camera with reasonably high resolution (5 MPix or more). Wide angle lenses suit better for reconstructing spatial relations between objects than telephoto ones. Avoid not textured and flat objects or scenes. Avoid shiny and transparent objects. Avoid unwanted foregrounds and moving objects as much as possible. Shoot shiny objects under a cloudy sky. Shoot pictures of the scene with a lot of overlap.

9 Capture most important scene content from multiple viewpoints (3 or more). Do not crop or geometrically transform the images. More photos is better than not enough. Spending some time planning your shot might be very useful. If you intend to set a reference coordinate system for reconstructed 3D model, make sure to identify or place on ground markers that will be used to set reference coordinate system and scale. Measure reference distance. Make sure to study the following schemes and read the list of restrictions before you get out for shooting photographs.

10 VeCAD: PROCESSING a 3D vector graphics library includes a powerful CAD editor in executable form Supported formats: AutoCAD DWG/ DXF, Native VEC format Calib: take minimum 4 photos about a picture of chess table calibrate the camera and the photos With the calibrate pictures can make 3D models or orthophotos.

11 VeCAD Modeling: Take photos of object Taking measurements of control points

12 Calibration of camera Import coordinates

13 Import photos Select photos to start rectification

14 The errors of the rectification

15 The rectified image

16 PhotoModeler Scanner Modelling: Calibration of camera Take photos of object Import photos Orientation photos

17 Marking points Creating lines Creating Surfaces Creating textures Export

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19 PhotoScan Modeling: Create project Import photos Choosing area of interest Align photos Build geometry Build texture Export

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21 Conclusions and discussion Learn about low-cost technique Improvement of traditional methods for surveying Practice in photogrammetry Image processing Applications for 3D digitization Use new tools and software in 3D modeling New tools for analysis of 3D artefacts Work in groups with students from other countries Work under pressure

22 Acknowledgments This paper is the result of a team work from the ERASMUS IP Project sustained by The European Union. The team was formed from five students from four different countries: Romania, Hungary,Slovakia and Greece.The Group A wish to thank to Doctor Professor A.Styliadis,Doctor T. Jancso, Lecturer S. Herban, Prof. Ing. A. Kopacik, Phd., Doctor L.Sechidis, the organization comitee.

23 Bibliography nner/default.html

24 The Group A Members Gabriela Beatris ILES[UPT, RO] She was born in Salonta, on She lives in Romania, in Tinca, a village near Oradea. She is studying Surveying Measurements and Cadaster at the Polytechnic University of Timisoara. She enjoys spending her free time with her friends, traveling and reading and she is interested in 3D modeling. beatris_iles@yahoo.com Facebook account: Beatris Iles Ivan HATALA[STU, SL] He was born on He lives in Slovakia. He is studying Geodesy and Cartography at the Slovak University of Technology. He enjoys reading, watching formula-1, playing pool and he is interested in photogrammetry. ivan.hatala25@gmail.com Facebook account: Ivan Hatala

25 Alexander DATSOS, [TEI.K, GR] He was born in Permet Albania on He lives in Greece in Athens. He is studying Landscape Architecture at the University of Kavala. He enjoys reading, 3D modeling and he is interested in photogrammetry. Facebook account: Alexander Datsos Mónika WEBER[UWH-GEO,HU] She was born on in Siófok. She lives in Hungary in Lajoskomárom, near Siófok. She is studying Land Surveying at University of West-Hungary Faculty of Geoinformatics. She enjoys reading, fishing and riding and she interested in 3D modeling. Facebook account: Wéber Mónika György András,[UAB, RO] He was born on in Targu Mures. He is a student in the III-rd year at 1 December 1918 University from Alba Iulia, Romania at land surveying and cadastre.he likes to spend his free time doing extreme sports: flying, riding motorcycles, climbing mountains, to travel. gyorgyandras@yahoo.com Facebook acoount: György András

26 PROJECT THESIS OF GROUP A Alexander DATSOS, [TEI. K, GR] Andras GYORGY, [UAB, RO] Ivan HATALA, [STU, SR] Gabriela-Beatris ILES, [UPT, RO] Monika WEBER, [UWH-GEO,HU] THASOS, june 2013

27 GROUP A

28 THANK YOU FOR YOU ATTENTION!!!