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Presented to: San Diego Regional GIS Council

2008 Imperial County Aerial Imagery Acquisition Project. Presented to: San Diego Regional GIS Council Presented by: Pat Landrum, GIS Manager Caltrans District 11. 2008 Imperial County Aerial Imagery Acquisition Project Overview. Purpose and Need Agency Coordination Project Scoping

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Presented to: San Diego Regional GIS Council

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  1. 2008 Imperial CountyAerial Imagery Acquisition Project Presented to:San Diego Regional GIS Council Presented by:Pat Landrum, GIS Manager Caltrans District 11

  2. 2008 Imperial CountyAerial Imagery Acquisition ProjectOverview Purpose and Need Agency Coordination Project Scoping RFP and Project Management Current Project Status Next Steps/Future Efforts

  3. 2008 Imperial CountyAerial Imagery Acquisition Project Purpose and Need for Project • Acquire High Resolution, Spatially Accurate Aerial Imagery • Support SCAG Land Use Database • Support Assessor’s Office Workflow • Local Jurisdiction Asset Management • Travel Demand Model Development/Maintenance • Agricultural Land Management • Habitat Management/Planning (Salton Sea)

  4. 2008 Imperial CountyAerial Imagery Acquisition Project Agency Coordination • Lead Agency - SCAG • $240,000 Budget • USGS Contribution $40,000 (Salton Sea Shoreline) • Imperial County GIS (ICGIS) - Technical Advisory Committee • QA/QC Sub-Committee • Caltrans, Assessor, Nobel Systems, Calexico, IID, SCAG • Positional Accuracy (Caltrans Surveys/Photogrammetry) • Seam Lines, Color Balance, Shadows, etc. – Collective Effort

  5. 2008 Imperial CountyAerial Imagery Acquisition Project Project Scoping • Research • Recent Projects • LARIAC Efforts • Off-the-Shelf Products • Identify Product Needs and Minimum Specs • Develop Preliminary Cost Estimates

  6. 2008 Imperial CountyAerial Imagery Acquisition Project Project Scoping • Image Capture Areas • Urban (Irrigated) and Non-Urban • Baja (Mexicali and Andrade/Algodones) • High Res/Low Res Areas • Temporal Issues • Agricultural Seasons/Characteristics • Sun Angle • Project Schedule (Flight Schedule, Processing, Funding [SCAG & USGS]) • Military and Mexican Airspace Clearance • Technology and Products • Digital vs. Film (Digital) • Airborne GPS/IMU and AAT • GeoTIFF and MrSID (UTM and StatePlane) w/Metadata • Photo-Grid with Time and Date Stamp • Public Domain

  7. 2008 Imperial CountyAerial Imagery Acquisition Project Project Scoping • Imagery Specifications • Two Tiered – Minimally Acceptable and Desirable • 6”/pixel for Urban (Irrigated) Area • 1’/pixel for Non-Urban Area • ± 3.3 and ± 6.6 Positional Accuracy (NMAS 1:100/1:200)

  8. 2008 Imperial CountyAerial Imagery Acquisition Project RFP Development & Consultant Selection • RFP Development • Project Specifications • Tile Index (Hi Res/Low Res) • Define Requirements, Tasks & Schedule • ID Preliminary QA/QC Sample Areas • Deliverables • Proposal Review and Consultant Selection • Proposal Review Committee (Tech Group Subcommittee) • 4 Proposals • 2 Eliminated (Over Budget & Past Performance) • SANBORN Selected for Project

  9. 2008 Imperial CountyAerial Imagery Acquisition Project Project Development/Delivery • Project Coordination • Flight Plan • Military and Mexican Airspace Clearance • QA/QC Review (“Pilot” Images – Varied Characteristics) • Contract Amendment for USGS Funds 1’/Pixel Capture Area and Flight Plan 6”/Pixel Capture Area and Flight Plan

  10. 2008 Imperial CountyAerial Imagery Acquisition Project Current Project Status • QA/QC Review • All Sample Tiles Well Within Tolerance for Specs • GeoTIFFs Delivered • Defining MrSID Tile Areas • Final Project Delivery by end of October 2008

  11. 2008 Imperial CountyAerial Imagery Acquisition Project Sample Data 6”/Pixel Data – Mexicali Minimum-Maximum Stretch (ArcGIS) 6”/Pixel Data – Calexico Area Default Settings (ArcGIS)

  12. 2008 Imperial CountyAerial Imagery Acquisition Project Next Steps • Deliver MrSID Data to Local Agencies • Provide Training • Host Data on ICGIS GeoViewer Application (Nobel Systems) • Make Data Available in the Public Domain (USGS) • Custom MrSID Files for Local Jurisdictions (Caltrans) • Presentation to IVAG Management and Regional Council (SCAG/Caltrans) Future Efforts • FY 2009/10 Project (Urban Area Only?) • Explore Additional Funding Opportunities (USGS, USMC, Others?) • Utilize Data to Develop/Enhance Land Use Data • Travel Demand Model Development

  13. 2008 Imperial CountyAerial Imagery Acquisition Project Questions?

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