Photogrammetry the process

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How the photogrammetry process works from start to finish and the benefits from using accurate as-built data.

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Photogrammetry the process

  1. 1. Presentation
  2. 2. Photogrammetry Presentation What is Photogrammetry ?
  3. 3. Photogrammetry Presentation “Precise, non-contact, optical and three dimensional system for generation of 3D models from plant photographs”
  4. 4. Photogrammetry Offset History Presentation Offset Services Limited Established 1983 Commenced Photogrammetry Development 1985 Offset Develops and Supplies the Best available and most cost Effective Technology Location Offset: Warrington, UK Joint Venture Partners: ACS: Irvine, CA and Houston, TX Acumod: Vancouver, Canada Eutech: Billingham, UK
  5. 5. Photogrammetry Satisfied Customers Presentation Process Defence Civil
  6. 6. Photogrammetry - Process Satisfied Customers Presentation Nuclear Offshore Pharmaceutical Petrochemical Pulp & Paper Back
  7. 7. Photogrammetry - Defence Satisfied Customers Presentation Aerospace Artillery Marine Back
  8. 8. Photogrammetry - Civil Satisfied Customers Presentation Buildings Interiors Back
  9. 9. Photogrammetry - Nuclear Satisfied Customers Presentation Shinseigiken, Surveying Machine for Tepco, Japan Esic, Cherbourg, COGEMA, France IHI, Japan MHI, Japan Aldermaston, Weapons Research British Nuclear Fuels Ltd, Back
  10. 10. Photogrammetry - Offshore Satisfied Customers Presentation EPMI, Irong Barat Platform Samarang, Philips Mobil Shell Seligi Pulia Back
  11. 11. Photogrammetry - Pharmaceutical Satisfied Customers Presentation Elomatic Finland, Pharmacia and Upjohn, Sweden Merck, SSO building, Rahway, NJ, USA. ICI Back
  12. 12. Photogrammetry - Petrochemical Satisfied Customers Presentation Marathon, Neste Oil, Finland Procter and Gamble, Amine oxide expansion, Kansas Dow Chemical, Orion project, Texas - 5 jobs Eutech, (ICI, Rohm & Haas, Air Products, DuPont) Procter and Gamble, Amine Oxide Expansion, Kansas British Petrolium Back
  13. 13. Photogrammetry – Pulp & Paper Satisfied Customers Presentation Procter and Gamble, Machine 10, Green Bay, USA Inovx solutions support for 3m paper project Jaako-Poyry, Metsa Botnia, Joutseno paper pulp, Finland QPS, Arjo Wiggins, London Back
  14. 14. Photogrammetry - Aerospace Satisfied Customers Presentation HVR, Lynx, GKN Westland Helicopters HVR, Hawk Aircraft for DERA Back
  15. 15. Photogrammetry - Artillary Satisfied Customers Presentation HVR consulting svcs, 4.5” inch gun and hydraulics VSEL, Barrow HVR, Warrior turret for GKN Defence Back
  16. 16. Photogrammetry - Marine Satisfied Customers Presentation HVR, survey of a compartment of HMS Chatham HVR, nuclear submarine, Vanguard class, (vengeance) HVR, bridge of type 23 frigate HVR, DERA signature modelling HMS Westminster, Plymouth DERA Winfrith, Superstructure of R.V. Triton Vosper Thorneycroft, Canoe, Hasler Back
  17. 17. Photogrammetry - Buildings Satisfied Customers Presentation Historic Doorway, English Heritage, Manchester Malasyian Theme park, Roger Dean. Back
  18. 18. Photogrammetry - Interiors Satisfied Customers Presentation Voyager of the seas, Port of Miami, Florida Ecstasy, Port of Miami, Florida Fantasy, Port of Miami, Florida Sovereign of the seas, Port of Miami, Florida For Deltamarin, Finland Back
  19. 19. Photogrammetry Capturing Plant Data: Applications Presentation Engineering Simulation Constructability Analysis Inspection Information Management
  20. 20. Photogrammetry Capturing Plant Data: Benefits Presentation On-Site Savings 3D CAD Savings Increase Safety Increased Accuracy Decrease Rework
  21. 21. Photogrammetry Capturing Plant Data: Benefits Presentation Capturing Plant Data Benefits Better Faster Cheaper Safer Requires Less Increases Time Than Avoids Accuracy and Physical Minimizes Personnel Reliability Measurement Work Exposure 70-80% Cost Reduction in Data Collection 20-30% Cost Reduction in CAD Modeling
  22. 22. Photogrammetry Presentation I.Planning IV. Analysis MaganNTTM Planing Graphics Photo Magan JrTM View CDROM Object Database V. Analysis Surveying Visual Manager Data Database Photography MaganNTTM Neutral File Format II.Site Work III. Modeling Movies Computer Intergraph Bentley CADCentre EA Systems -Vision PDS Microstation PDMS PASCE All stages in this process can be VI. Engineering modified to suit Simulation Autodesk Autodesk a particular site. Info. Mgmt. AutoCAD 3D AutoCAD 2D
  23. 23. Photogrammetry I. Planning Presentation Main Considerations • Scope of Work • Detail Level Required • Lead Time • Working Conditions - Hot Work, Weekends etc • Cost (Display Cost Curve) Return to Main Menu
  24. 24. Photogrammetry II. Sitework Presentation Sitework Involves • Setting Out Survey • Free Stations • Measuring Photo Control Points • Taking Overlapping Stereo Photopairs Return to Main Menu
  25. 25. Photogrammetry II. Sitework: Surveying Presentation Return to Main Menu
  26. 26. Photogrammetry II. Sitework: Surveying Presentation Return to Main Menu
  27. 27. Photogrammetry II. Sitework: Surveying Presentation Return to Main Menu
  28. 28. Photogrammetry II. Sitework: Photographing Presentation Return to Main Menu
  29. 29. Photogrammetry II. Sitework: Photographing Presentation Four targets are placed in the area of each photopair. This allows the software in the office to calculate the positions of the cameras when the photopairs were taken Return to Main Menu
  30. 30. Photogrammetry II. Sitework: Photographing Presentation Four targets are placed in the area of each A pair of photographs is photopair. This allows the software in the left then taken fromthe office to calculate right which and then thethe positions contain the same four of the cameras when the points, this were taken a photopairs is known as photopair. Left photograph taken Return to Main Slide
  31. 31. Photogrammetry II. Sitework: Photographing Presentation Right photograph taken Return to Main Slide
  32. 32. Photogrammetry II. Sitework: Setting Out Survey Presentation Points Surveyed to Allow Stations Anywhere in the Job Return to Main Menu
  33. 33. Photogrammetry II. Sitework: Free Stations Presentation Stations can be set up using original survey points Return to Main Menu
  34. 34. Photogrammetry II. Sitework: Photo Control Points Presentation Station then used to Survey Photo Control Points Return to Main Menu
  35. 35. Photogrammetry II. Sitework: Stereo Photopairs Presentation Overlapping Photopairs taken to cover all over objects Return to Main Menu
  36. 36. Photogrammetry III. Modelling Presentation Modelling Involves • Transfer of Survey Data to Magan • Scanning Photopairs • Modeling Photopairs in MaganNT • Cutting CDROMs of Photopairs and Models • Preparing a MaganJr Visual Database Return to Main Menu
  37. 37. Photogrammetry Magan:- PC Based 3-D Data Acquisition Software Presentation Images are downloaded to desktop or laptop computers Return to Main Menu
  38. 38. Photogrammetry III. Modelling: Scanning Photopairs Presentation Photopairs are produced Images which can be viewed and interrogated in WindowsNT Each Image produces 3040*2473 pixels, the example pair would be ≈6MB in total Reasons for Colour Images •On-Site Processing Data Verification •Realistic Data Tracking •Size of Scanned Files •Reduced Time For enhancement Return to Main Menu
  39. 39. Photogrammetry III. Modelling Presentation Return to Main Menu
  40. 40. Photogrammetry III. Modelling Presentation Return to Main Menu
  41. 41. Photogrammetry III. Modelling: Create a Photopair Element Presentation Return to Main Menu
  42. 42. Photogrammetry III. Modelling: Import Survey Data Presentation Return to Main Menu
  43. 43. Photogrammetry III. Modelling: Load Photopair Presentation Return to Main Menu
  44. 44. Photogrammetry III. Modelling: Identify Target Positions Presentation Return to Main Menu
  45. 45. Photogrammetry III. Modelling: Identify Parallax Positions Presentation Return to Main Menu
  46. 46. Photogrammetry III. Modelling: Survey Positions Calculated Presentation Return to Main Menu
  47. 47. Photogrammetry III. Modelling: Camera Positions Calculated Presentation Return to Main Menu
  48. 48. Photogrammetry III. Modelling: Accuracy of Photopair Calculated Presentation Return to Main Menu
  49. 49. Photogrammetry III. Modelling: Elements Created from Photopairs Presentation Return to Main Menu
  50. 50. Photogrammetry III. Modelling: Elements Created from Photopairs Presentation Return to Main Menu
  51. 51. Photogrammetry III. Modelling: Elements Created from Photopairs Presentation Return to Main Menu
  52. 52. Photogrammetry III. Modelling: Elements Created from Photopairs Presentation Return to Main Menu
  53. 53. Photogrammetry III. Modelling: Elements Calculated from Points Presentation Elements Overlayed to Verify Accuracy and Model Completeness Return to Main Menu
  54. 54. Photogrammetry III. Modelling Presentation Return to Main Menu
  55. 55. Photogrammetry III. Modelling Presentation Return to Main Menu
  56. 56. Photogrammetry III. Modelling Presentation Return to Main Menu
  57. 57. Photogrammetry III. Modelling Presentation Return to Main Menu
  58. 58. Photogrammetry III. Modelling Presentation Return to Main Menu
  59. 59. Photogrammetry III. Modelling Presentation Return to Main Menu
  60. 60. Photogrammetry III. Modelling Presentation Return to Main Menu
  61. 61. Photogrammetry III. Modelling Presentation Return to Main Menu
  62. 62. Photogrammetry III. Modelling Presentation Return to Main Menu
  63. 63. Photogrammetry III. Modelling: Modeling Photopairs Presentation Photopairs are modelled by referencing the target positions in the photopairs with real world positions collected from the site with the theodolite. This enables the cameras position to be calculated. Return to Main Menu
  64. 64. Presentation Cost/Completeness Cost 100% 0% Completeness 97% Return
  65. 65. Photogrammetry Typical On Site Photographs Presentation These photopairs are taken from site to enable the extraction of accurate 3D As-Built data for transfer into Customers CAD system, such as PASCE Return to Main Menu
  66. 66. Photogrammetry Transfer from Magan Presentation Return to Main Menu
  67. 67. Photogrammetry Transfer into PASCE Presentation Return to Main Menu
  68. 68. Photogrammetry Transfer into PASCE Presentation Return to Main Menu
  69. 69. Photogrammetry Transfer into PDMS Presentation Return to Main Menu
  70. 70. Photogrammetry Transfer into Review Presentation Return to Main Menu
  71. 71. Photogrammetry Transfer into Microstation Presentation Return to Main Menu

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