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Jason RayJason.Ray@em.myflorida.com GIS Analyst850-413-9979

Richard ButgereitRichard.Butgereit@em.myflorida.com GIS Administrator850-413-9907

Post-Disaster Remote Sensing

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• This presentation will summarize post-disaster remote sensing strategies –– State Emergency Response Team

• Imagery acquisition• Imagery processing • Creating image service using ArcGIS Server Image Extension• Methods for display• Activities from Tropical Storm Debby (Summer 2012) will be

reviewed

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• Florida Department of Transportation –Aerial Surveying & Mapping group is responsible for both Flight Operations and Photogrammetry. They develop statewide policies, procedures, and standards for aerial surveying products for the department and also acquire and process aerial photography. They support the District Offices in the production of planimetric and topographic mapping and create ortho-rectified and georeferenced imagery and digital terrain models (DTMs). The Aerial Surveying and Mapping group also provide critical support to the State Emergency Response Team by collecting aerial photography for disaster analysis and mapping. Professional Surveyors, Mappers, Photogrammetrists, and Pilots employed by the State.

– Requirements and capabilities coordinated through statewide GIS coordination call.• Included are other State agency GIS Staff and Water Management Districts.

– Tasked as missions within EM Constellation.

Aerial Photos

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• State of Florida –– State of Florida uses a 5,000ft x 5,000ft orthophoto-LiDAR data

acquisition grid– agreed upon standard by FDOT, FDEP, FDEM, FWC, and the WMDs– Grid available for download from SWFWMD

Aerial Photos

Aerial Photos• Imagery delivered via hard drive to State EOC, as soon as possible after acquisition

and with minimal processing… Not true ortho-rectified images Very little color balancing Very little seaming or removal of overlap (white space) TIF or SID

• Following initial delivery, FDOT may follow up with additional deliveries of increasing image quality.

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Imagery Processing Steps:• Transfer images from external hard drive• Imagery is stored on a network drive and on web server• On web server, start ArcMap…

Create new file geodatabase in Catalog Create new Mosiac Dataset

Imagery Processing Steps (continued): Add rasters – by workspace (directory) Check radio buttons for Update Cell Size Ranges, Update Boundary, Build

Raster Pyramids, & Calculate Statistics.

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Imagery Processing Steps (continued): Open ArcToolbox, Select Data Management Tools… Under Raster Toolboox, select Mosaic Dataset Toolbox and then the Build

Footprints tool...

Imagery Processing Steps (continued): Set the Minimum Data Value to 0 & the Maximum Data Value to 250… Pixel values – 0 (Black) to 255 (White). Setting your minimum to 0 & maximum to

250 will remove pixel values around the perimeter of the footprint greater the 250 or the white areas.

Set the Approximate number of vertices to 20. Check Skip Overviews & Update Boundary then Click OK.

12Imagery Processing Steps (continued): Under Raster Toolbox, select Mosaic Dataset Toolbox and then the Build

Overviews tool...

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Imagery Processing Steps (continued): To create an Image Service with processed imagery, right-click on Mosaic

Dataset, & select Publish to ArcGIS Server... Point to Web Server and provide a Service Name.

http://map.floridadisaster.org/GATOR

Geospatial Assessment Tool for Operations and Response

• web based mapping application• display real-time data like weather radar,

watches, storm reports• base maps, event, and post-event data

GATOR

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FloridaDisaster.org Geoportal

http://floridadisaster.maps.arcgis.com/home/index.html

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Jason RayJason.Ray@em.myflorida.com GIS Analyst850-413-9979

Any Questions?

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