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Close Range Digital Photogrammetry in Civil Engineering

Close Range Digital Photogrammetry in Civil Engineering. Presented by Sang-Ho Kim CEE 398 Experimental Method in Structural Engineering. Close Range Digital Photogrammetry CEE 398, Experimental Method in Structural Engineering. Overview. Introduction Applications Basic Knowledge

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Close Range Digital Photogrammetry in Civil Engineering

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  1. Close Range Digital Photogrammetry in Civil Engineering Presented by Sang-Ho Kim CEE 398 Experimental Method in Structural Engineering

  2. Close Range Digital Photogrammetry CEE 398, Experimental Method in Structural Engineering Overview • Introduction • Applications • Basic Knowledge • Photogrammetry in Civil Eng. • Concluding Remarks • Links and References Presented by Sang-Ho Kim

  3. Close Range Digital Photogrammetry CEE 398, Experimental Method in Structural Engineering Introduction • Photogrammetry: • Photogrammetry is the technique of measuring objects (2D or 3D) from photogrammes. Its most important feature is the fact that the objects are measured without being touched. • Photogrammetry can be divided into: • Far range photogrammetry • - Aerial photogrammetry, etc • Close range photogrammetry • - Terrestrial Photogrammetry, etc Presented by Sang-Ho Kim

  4. Close Range Digital Photogrammetry CEE 398, Experimental Method in Structural Engineering Applications • Architectural & Historical Preservation • Industrial Machinery • Aerospace • Automotive • Nuclear Power • Petrochemical, Process & Manufacturing Plants • Pulp & Paper • Shipbuilding & Repair • Medical Science • Police Department • Civil Engineering Presented by Sang-Ho Kim

  5. Close Range Digital Photogrammetry CEE 398, Experimental Method in Structural Engineering Application I:Architectural & Historical Preservation Parliament House - Melbourne Presented by Sang-Ho Kim

  6. Close Range Digital Photogrammetry CEE 398, Experimental Method in Structural Engineering Application II:Industrial Machinery Smorgon Consolidated Industries Presented by Sang-Ho Kim

  7. Close Range Digital Photogrammetry CEE 398, Experimental Method in Structural Engineering Application III:Police Department (Utah Highway Patrol) DeChant Consulting Services photogrammetric evidence markers An incident scene diagram of a crash scene near Salt Lake City, UT Presented by Sang-Ho Kim

  8. Close Range Digital Photogrammetry CEE 398, Experimental Method in Structural Engineering Basic Knowledge • Triangulation: • If several objects have previously established coordinates, the distance and angle of unknown targets can be calculated. • Metrology: • 3D coordinates can be reproduced from 2D photographs. • Bundle Adjustment: • The most probable coordinates for each object, the error estimates, and estimates of precision for the entire process are determined through this process. Presented by Sang-Ho Kim

  9. Close Range Digital Photogrammetry CEE 398, Experimental Method in Structural Engineering Photogrammetry in Civil Engineering • Applications in Civil Engineering • Deformation Measurement in Beam Test • Crack Measurement • Densification of Geodetic Measurement of Dam • Strain Analysis of Solid Wood and Glued Timber Construction Presented by Sang-Ho Kim

  10. Close Range Digital Photogrammetry CEE 398, Experimental Method in Structural Engineering Photogrammetry in Civil Engineering: Case 1 • Automatic Deformation Measurement with a Digital Still Video Camera • By Markus Niederost, et al., Institute of Geodesy and Photogrammetry Swiss Federal Institute of Technology • Application of a digital still video camera to the measurement of deformations occurring during the dehydration process of concrete parts over several months Presented by Sang-Ho Kim

  11. Close Range Digital Photogrammetry CEE 398, Experimental Method in Structural Engineering Photogrammetry in Civil Engineering: Case 1 • Results: Deformation vectors are obtained. Presented by Sang-Ho Kim

  12. Close Range Digital Photogrammetry CEE 398, Experimental Method in Structural Engineering Photogrammetry in Civil Engineering: Case 2 • Measurement of Concrete Cracks Using Digitized Close-Range Photographs • By Liang-Chien Chen, et al., Center for Space and Remote Sensing Research, National Central University, Taiwan • Measurement of crack formation due to concrete expansion by chemical reactions Presented by Sang-Ho Kim

  13. Close Range Digital Photogrammetry CEE 398, Experimental Method in Structural Engineering Photogrammetry in Civil Engineering: Case 2 • The non-contact measurement is employed because of the physical limitations in manual measurements. • Results: The widths of cracks change from place to place. • A non-contact measure method improves the traditional time-consuming measurement. Presented by Sang-Ho Kim

  14. Close Range Digital Photogrammetry CEE 398, Experimental Method in Structural Engineering Photogrammetry in Civil Engineering: Case 3 • Photogrammetric Techniques for Deformation Measurements on Reservoir Walls • By Hans-Gerd Maas, Civil Engineering and Geo Sciences, Delft University of Technology • Measurement of the 3-D coordinates of signalized targets on a large water reservoir wall in Switzerland Presented by Sang-Ho Kim

  15. Close Range Digital Photogrammetry CEE 398, Experimental Method in Structural Engineering Photogrammetry in Civil Engineering: Case 3 • Repeated measurement of a large number of points is required in short time. • Photogrammetric data capture can be finished within minutes from a helicopter; processing can be widely automated and the accuracy potential can be in the order of 2-3 millimeters. Presented by Sang-Ho Kim

  16. Close Range Digital Photogrammetry CEE 398, Experimental Method in Structural Engineering Photogrammetry in Civil Engineering: Case 4 • Strain Analysis of solid wood and glued laminated timber constructions by close range photogrammetry • By Franke, Bettina, et al., Bauhaus-Universität Weimar, Germany • Measurement of progression of deformations, cracks and deterioration including the loading and relieving of the specimens. Presented by Sang-Ho Kim

  17. Close Range Digital Photogrammetry CEE 398, Experimental Method in Structural Engineering Photogrammetry in Civil Engineering: Case 4 • Measurement of the crack growth for the determination of fracture mechanics parameters of the material wood • Exact reproduction of geometry of the cracks in the measuring photos Presented by Sang-Ho Kim

  18. Close Range Digital Photogrammetry CEE 398, Experimental Method in Structural Engineering Photogrammetry in Civil Engineering: Case 5 • Investigation of Pre- and Postcracking Shear Behavior of Prestressed Concrete Beams Using Innovative Measureing Techniques • By Josef Hegger, et al., ACI Str. Journal, V.101, No.2, Mar-Apr 2004 • Method of photogrammetry for the study of the crack opening process of prestressed concrete beams Presented by Sang-Ho Kim

  19. Close Range Digital Photogrammetry CEE 398, Experimental Method in Structural Engineering Photogrammetry in Civil Engineering: Case 5 • Algorithm used to determine crack edge • (a) Separation of the cracked elements • (b) Determining the cracked edges of the elements • (c) Calculation of crack opening vector • (d) Determining the displacement components Presented by Sang-Ho Kim

  20. Close Range Digital Photogrammetry CEE 398, Experimental Method in Structural Engineering CONCLUDING REMARKS • The photogrammetry technique is a powerful and productive tool for accurate and robust measurement. • The technique has been used in Civil Engineering due to the following advantages. • - Time and efforts can be reduced at any measurement or surveying work. • - The measurement can be repeated many times in short period. • The data can be transmitted through network immediately. • Highly concentrated data can be obtained. • The real-time tracking of measurement is possible. Presented by Sang-Ho Kim

  21. Close Range Digital Photogrammetry CEE 398, Experimental Method in Structural Engineering Useful Links http://www.univie.ac.at/Luftbildarchiv/index.html http://www.cee.uiuc.edu/classes/cee398kuc/DigitalOpticalMethods/ http://www.geodetic.com/ http://www.computervision.com/ http://www.ccddirect.com/ http://gangeli.customer.netspace.net.au Presented by Sang-Ho Kim

  22. Close Range Digital Photogrammetry CEE 398, Experimental Method in Structural Engineering References • Automatic Deformation Measurement with a Digital Still Video Camera • Markus Niederost, et al., Institute of Geodesy and Photogrammetry Swiss Federal Institute of Technology • Measurement of Concrete Cracks Using Digitized Close-Range Photographs • By Liang-Chien Chen, et al., Center for Space and Remote Sensing Research, National Central University, Taiwan • Photogrammetric Techniques for Deformation Measurements on Reservoir Walls • Hans-Gerd Maas, Civil Engineering and Geo Sciences, Delft University of Technology • Strain Analysis of solid wood and glued laminated timber constructions by close range photogrammetry • Franke, Bettina, et al., Bauhaus-Universität Weimar, Germany • Investigation of Pre- and Postcracking Shear Behavior of Prestressed Concrete Beams Using Innovative Measureing Techniques • Josef Hegger, et al., ACI Structural Journal, V.101, No.2, Mar-Apr 2004 Presented by Sang-Ho Kim

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