E FOTO project and the research to implement a GNU/GPL opensource educational digital photogrammetric workstation

Transcription

1 E FOTO project and the research to implement a GNU/GPL opensource educational digital photogrammetric workstation Program of Post graduation in Geomatics Rio de Janeiro State University Guilherme Lucio Abelha Mota Jorge Luís Nunes e Silva Brito João Araújo Ribeiro Orlando Bernardo Filho Rogério Luís Ribeiro Borba Rodrigo Jardim Monteiro da Fonseca Luiz Carlos Teixeira Coelho Filho Rafael Alves de Aguiar Irving da Silva Badolato Rafael Paz Silva

2 Presentation Outline Introduction Motivation E FOTO project Technical results Ongoing trends Discussion 2/38

3 Introduction 3/38

4 Photogrammetry Photogrammetry aims at obtaining reliable geometric information of the studied objects based on stereo photography 4/38

5 Digital Photogrammetric Workstation DPW is the software that performs photogrammetric tasks 5/38

6 Photogrammetric Workstations Timeline HARDWARE SOFTWARE 100% optic mechanical technology Start up of the usage of electronics Increasing capacity of digital images processing 6/38

7 Digital Photogrammetric Workstation The cost of DPWs hinders its purchasing for research and teaching in underdevelopment countries; Proprietary DPWs give hardly any support to the attachment of under investigation user algorithms. Without access to the source code there isn't research! 7/38

8 Alienation and Emancipation Proprietary Digital Photogrammetric Workstations E Foto Educational Digital Photogrammetric Workstations 8/38

9 The E-Foto project 9/38

10 Aims of the E Foto Project The development of a Digital Photogrammetric Workstation Teaching, research and development Self learning environment Comprehension about the scientific knowledge behind the DPWs, and not what buttons I am supposed to press Allow the inclusion of user developed photogrammetric solutions Benefit from the interaction between users and developers Underlie its adoption out of the Rio de Janeiro State University 10/38

11 Educational Commons free software teaching collaboration research development free documentation 11/38

12 E Foto Project's Team Professors Computer Engineering Cartographic Engineering Undergraduate Students Scientific Initiation Scholarships CPRM probationers Uerj probationer Conclusion Projects Mastering Students of Geomatics Temporary Positions Laboratory Technician Webdesigner 12/38

13 Project's Infrastructure Components: Hardware Applicative software Knowledge dissemination Projects homepage Documentation Laboratory of photogrammetry GNU/GPL photogrammetric software 13/38

14 Development Platform Qt Nokia, Inc. GUI (Graphic User Interface) multiplatform and C++ library Linux (GPL) Macintosh (GPL) Windows (freeware) The strong portability increases the number of candidates to users and developers of this project 14/38

15 E Foto's Photogrammetric Modules Version O.1 (a) images rectification (b) interior orientation (c) exterior orientation (d) bundle block adjustment (e) normalization (f) DEM (g) orthorectification 15/38

16 E FOTO on line visits from June 3 to July 3, /38

17 Educational Conception 17/38

18 Challenges of Digital Photogrammetry Teaching theory practice mathematical models research 18/38

19 Fundamental Topics of Digital Photogrammetry Teaching 19/38

20 Self learning Free access to documentation and other materials; Users are classified in three different levels according to their aims and skills: 20/38

21 Self learning (Level 1) Level 1 beginner The ones that want just to verify the work of the different photogrammetric routines E FOTO Educational DPW modules Tutorials (Portuguese, Spanish, on going English translation) 21/38

22 Self learning (Level 2) Level 2 regular student E FOTO DPW as a Computer Assisted Learning tool E book and digital photogrammetry book E FOTO modules Usage tutorials 22/38

23 Self learning (Level 3) Level 3 Researcher and developer Source code Documents and software documentation 23/38

24 Recent Results 24/38

25 Digital Photogrammetry Book 25/38

26 Photogrammetric Project Auditing 26/38

27 Digital Photogrammetry Conceptual Model 27/38

28 Stereoplotting according to EDGV Standard First stereoplotter to be adapted to the EDGV standard, part of Brazilian Spatial Data Infrastructure. Relational Model of EDGV Stereoplotter extension Cartographic features are stored in the Database E-FOTO's stereoplotter EDGV Plugin DBMS OO Conceptual Model of EDGV EDGV 28/38

29 Connection to Sedna XML Database C++ API XQuery 29/38

30 Ongoing tasks 30/38

31 Version 1.0 of E FOTO's Educational DPW Software Integration 31/38

32 e learning Environment Mathematical models Geometric Models 32/38

33 Educational Impact Evaluation 33/38

34 Automatic DSM Extraction 34/38

35 Virtual Fieldwork 35/38

36 Conclusion 36/38

37 Conclusion E Foto aggregates different professionals with different backgrounds and specialization levels Educational Commons dedicated to digital photogrammetry teaching and research Knowledge socialization This project is the basis for advanced studies Automatic extraction of DEM Virtual reality and computer graphics Knowledge based image interpretation Integration to InterImage 37/38

38 Discussion 38/38