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Deliver Value to Your Client and Improve Your Bottom Line with Ortho Images



Presentation made for Leica HDS Users Conference in San Ramon, October 2010

Presentation made for Leica HDS Users Conference in San Ramon, October 2010



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Deliver Value to Your Client and Improve Your Bottom Line with Ortho Images Deliver Value to Your Client and Improve Your Bottom Line with Ortho Images Presentation Transcript

  • J. R. Lemuel Morrison, LS Deliver Value to Your Client & Improve Your Bottom Line with Ortho Images
    • Outline
    • Introduction
    • Client Service Providers
    • Alternative
    • Case study – UTS Columbia University
    • Procedure & Best Practices
    • Other uses
    • Conclusion
    • Background
    • Lemuel Morrison, L.S.
      • Licensed Surveyor in NY, NJ & OH
      • Owner & Principal Surveyor of Mercator Land Surveying
      • Instructor at CUNY – NYC College of Technology
    • Mercator Land Surveying
      • Geospatial specialists
      • Consultants – we work with clients to find solutions that fit their requirements/needs and budget.
    • Client Sees:
      • Scanning is too complicated
      • Scanning has too much potential for disaster
      • Point Clouds are unusable
      • 3-D lines or model is unwieldy and difficult to use
      • Service is too expensive and take too long.
      • Wants a deliverable at the object should be, not as it actually is.
    • Service Provider Sees:
      • A great object to scan
      • Technical challenge
      • ROI on equipment, training and software
      • Mismatch between field time and office time 1 : 5
      • Limited float on licenses & limited technicians
      • Interested in laser scanning, but cost, steep learning curve giving pause.
      • Facts not fiction.
    • Service Provider Redux:
      • Don’t get blinded by sunk costs, ANYTHING above marginal costs is profit.
      • Play to your strengths
      • Use cyclone for services that client really wants.
      • Use AutoCAD for everything else
    • Client Redux:
      • Needs data rich format that is easy to use and is something familiar.
      • Needs fast turnaround
      • Needs a service that is sensitive to my budget
    • Alternative
    • Use orthoimage function in cyclone
      • Use the power of cyclone to register and clean.
      • Export ortho image to AutoCAD for simple line drafting
      • Simple yet delivers value to the client
    • Case Study
    • Institution Façade
    • The process:
    • The conservators will inspect every item.
    • They will log condition using a tablet with autocad in the field.
    • Deliverable:
    • One CAD drawing of 16 facades over two city blocks.
    • Linework of rectilinear features in CAD file must be as it “should” be not as it actually is.
    • Ortho image for all schist and ornamental features
    • Compressed timeframe. Start delivering files in two weeks on a rolling schedule.
    • Procedure
    • Field:
    • Scan each façade from at least 2 stations
    • Set density ~ 1 cm
    • Minimal control
    • Cyclone:
    • Register as we go using targets and cloud-to-cloud.
    • Cull the point cloud to specific façade and clean out noise
    • Create coordinate system specific to façade
    • Project cloud to front view in ortho mode
    • Export ortho image
    • AutoCAD:
    • Import image.
    • Draft linework by entry-level technician
    • Create a
    • Coordinate System
    • Adjust
    • Point Cloud Appearance
    • Export Image
    • Overall &
    • Tiles
    • Create a
    • Coordinate System
      • Create lines that best file the vertical & horizontal axis of the façade.
      • Set the coordinate system to match these lines. Be careful of the order lines you pick.
      • Set orthogonal view & front view
      • Turn off the lines. Otherwise they will show in the image
    • Adjust Point Cloud Appearance
      • Play with settings to find best contrasting image. B/W worked best in this case.
      • Adjust Global Color Map Setting under
      • Change the min and max improve contrast. This will hide some points
    • Export Image
      • Zoom and pan to center the image you can to capture.
      • Remember you can do an overall and tile. (just keep the TFW)
      • Choose a width and keep the aspect ratio.
    • Best Practices
    • Watch point density! Too much GB++ too little and you return to the field
    • Keep each façade in a unique coordinate system
    • Change point cloud appearance to improve contrast
    • Create multiple images to reduce the burden and to maximize the point density to pixel size
    • Put each façade in a unique subdirectory.
    • Other Applications
    • QAQC
    • Drafting Aid
    • Tree Trunk Diameter
    • Drip Line
    • Rooflines or Overhangs
    • . . . Items that need to be shown graphically, but not necessary to high precision.
    • Conclusions
    • A picture tells a thousand stories
    • Common ground can be found
    • Simpler is better
    • Use additional tools to keep high-value equipment busy
    • . . . And get additional exposure.
  • Thank You Lemuel Morrison, LS Mercator Land Surveying, LLC [email_address] http://www.linkedin.com/in/mercatorlem