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Low-Cost Asset Management

Low-Cost Asset Management. Eric Green, GISP, PE. Agenda. Free GIS tools Geo-tagging for asset management Linking collected data to assets Low Cost Sign Management. Free GIS Tools. Free GIS Tools. MapWindow DotSpatial Google Maps usRAP. MapWindow. Four versions MapWindow 4.x

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Low-Cost Asset Management

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  1. Low-Cost Asset Management Eric Green, GISP, PE

  2. Agenda • Free GIS tools • Geo-tagging for asset management • Linking collected data to assets • Low Cost Sign Management

  3. Free GIS Tools

  4. Free GIS Tools • MapWindow • DotSpatial • Google Maps • usRAP

  5. MapWindow • Four versions • MapWindow 4.x • MapWindow 6 (work in progress) • MapWINGIS • DotSpatial • Free! • Open source • Huge, academic community

  6. MapWindow 4.x Application • GIS User • Free map viewer • Editor • Map making tools • ArcGIS-lite • Extend functionality via plugins • Kriging, photo viewer, water quality, streamflow • Safety Software Suite (crash and signs) • AutoCAD exporter • http://www.mapwindow.org

  7. MapWindow Toolbox • Buffer shapes • Vector overlays, including intersection and union • Various clipping operations, including clip using shapefile or polygon mask • Dissolve shapes by attribute • Calculate polygon areas • Various projection functions • Several raster operations, including clip by polygon, merge grids, and reclassify

  8. MapWindow 6

  9. MapWINGIS • MapWinGIS.ocx is a FREE and OPEN SOURCE C++ based geographic information system programming ActiveX Control and application programmer interface (API) • Add to a Windows Form in Visual Basic, C#, Delphi, or other languages that support ActiveX • Give your application a powerful GIS map • Used to make MapWindow 4.x • http://mapwingis.codeplex.com/

  10. Example MapWINGIS Apps

  11. MapClick • Police used to collect crash data using paper reports and handheld GPS receivers • KTC created a free, offline map system allowing officers to click a point on the map and return the lat/long and LRS (county., route and milepoint) • MapClick

  12. SignProx • MapWINGIS is usable even for commercially available products • Useful built-in features: • Geo-tagging • Geo-coding • Symbology • Thumbnails • GPS integration • Shapefiles/aerials • Search • Pan, Zoom • …

  13. GoogleMaps API BuildUp • Using a free .Net wrapper for Google’s java API for Google Maps • Gmap for ASPX pages • http://googlemaps.subgurim.net • http://buildup.ukytc.com/ • buildup • crashrate@1

  14. Google maps

  15. Google maps

  16. usRAP

  17. Geo-tagging for Asset Management

  18. Google Street View Coverage

  19. Our Task Find a way to display images of roadways on a computer screen where Google Street View does not have coverage. Street View Coverage No Street View Coverage

  20. Rich Man’s Photo Log

  21. 100-Meter Points

  22. In the Field Nikon CoolPix p510 – GPS Enabled Digital Camera (~$300)

  23. In the Field

  24. In the Field

  25. Adding Pictures to Map Geo-tag Processing… Geo-tagged photos linked to point shapefile ID and Picture file name in one table

  26. Joining Pictures to 100m Points • ESRI ArcGIS - Spatial Join • Each 100m point along the roadway was joined with the nearest picture • Each 100m point was given the picture ID nearest to it

  27. GPS Accuracy Issues

  28. GPS Location Updating Error

  29. Dot Density

  30. GPS Location Updating Error Identified 100-meter dots joined to the same picture ID Started from last 100-meter point with an accurately located matching picture Determined 100-meter point where GPS location started updating again Interpolated the number of pictures needed between these two

  31. E 17 D C B 1 A

  32. E 17 13 D 9 C 5 B 1 A

  33. usRAP

  34. Quality Control An Excel formula was used to open Google Street View or the nearest local picture as appropriate for each rated section (100-meter point) This helped us quality control the rated data

  35. Linking Data to Assets Eric

  36. Devices Available in the US Model GR3 by Delta http://www.tapconet.com/digital Model 922 by Road Vista http://www.roadvista.com

  37. Where to get a retro gun? • Purchase through distributors • Delta – Tapco • RoadVista – Professional Pavement Products • Rent through distributors • Loan programs (LTAP or DOTs) • Share procurement with nearby agencies

  38. Linking Delta to an Inventory - Delta • Low-tech collection process • Take geotagged photos of signs assemblies • Take retroreflectivity readings at a specified time interval • Requires a two-man crew • take photos • retroreflectivity readings • Time keepers need to be in synch • Create inventory from geotagged photos • Link retroreflectivity data to inventory

  39. Specific Collection Process • Take a photo • Instruct retro gun operator to take a reading immediately • Take first set of four readings within seconds of the photo being taken • Take each reading within seconds of each other • Wait 10 seconds before reading the second color (if it exists) • Collect background first then legend • Wait at least 30 seconds before doing the next sign • Collect signs starting at top left and work down first then right • Wait at least 5 minutes before moving to the next assembly (make sure the photo taker does too)

  40. Collection Grid • The following grid shows the order of readings

  41. Merging Data • Use excel or ArcGIS to merge the photos with retroreflectivity readings • Identify 30 second gaps in timestamps to determine if readings are for a new sign • Identify 5 minutes gaps in timestamps to determine when a new assembly was collected • This technique was used for a small city in Kentucky for a GIS course project at UK

  42. Linking Delta to an Inventory - RoadVista • High- or Low-tech collection process • Recommended • RoadVista gun with bar code reader • Bar code stickers • Sign Inventory software • Smart phone with GPS and camera or GPS-enabled camera • USB or Bluetooth GPS receiver • Dry erase marker

  43. High-Tech • Select a new, unused barcode ID • Stick barcode sticker to back of the sign • Scan barcode sticker using RoadVista scanner • Take as many retro readings for the first color • If there is a second color change the RoadVista to legend • Inventory sign in the field using a laptop and a GPS receiver • Prepare inventory to receive a Bluetooth transmission • BarCode ID, background and legend retro readings will be transferred along with any standard and user comments

  44. Low-Tech • Scan barcode • Take retroreflectivity readings as described above • Add any user or standard comments • Take a photo with a GPS enabled camera (iPhone, Android, Trimble GeoXT, etc.) • Be sure to include the bar code ID such that it is readable • Import the geotagged photos into sign inventory system • Use the picture to code the sign type and barcode ID • Import the RoadVistadata into sign inventory system • All data with matching barcode IDs will be merged

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