2005 Statewide Color Orthophotography Project March 7-8, 2006

Jill Saligoe-Simmel, Ph.D. Executive Director Indiana Geographic Information Council Indiana State Library 140 N. Senate Ave., Room 306 Indianapolis, IN Jim Stout Program Manager IMAGIS 200 E. Washington St., Room 1322 Indianapolis, IN Presenters

 What is Orthophotography?  The Politics of a Statewide Project.  The Technology.  Deliverables.  Where we are Today. Agenda

Project Administration  Politics - 2 administrations  Funding  Contract negotiations  IGIC Orthophoto workgroup  State:  Roger Koelpin (State GIS Coordinator. ITOC)  James Robb (Program Manager, IDEM)  Bob Wilkinson (Staff/Surveyor, IDNR)  EJ McNaughton (Agency GIS Director, IDEM)  Bob Burns (Staff, INDOT)  Caitlin Intermil (HLS Grants Coordinator, SEMA)  County and Municipal:  Bill Holder (GIS Director, Kosciusko Co)  Jim Stout (Program Manager, IMAGIS)  John Thomas (GIS Director, City of Lafayette)  Larry Stout (GIS Director, Hamilton Co)  Matt McCormick (Photogrammetrist, IMAGIS)  Randy Smith (GIS Director, Monroe Co)  Betty Kiechle (Staff, Office of the Lake Co Surveyor)  David Smoll (Hancock County Surveyor)  Matt Arvay (Chief Information Officer, Vanderburgh Co)  Todd Kesselring (GIS Director, Elkhart County)  University:  Anna Radue (Faculty, Data Management and Support Services, UITS, Indiana University)  Larry Beihl (Professor, Purdue University)  Jim Bethel (Professor, Purdue University)

Orthophotography Project Partners  Indiana Counter Terrorism and Security Council  All 92 Indiana Counties  State Emergency Management Agency (DHS)  US Geological Survey  Indiana Department of Environmental Management  Indiana Department of Natural Resources  Indiana Criminal Justice Agency  IMAGIS  Indiana Geographic Information Council

Why Orthophotography?  Orthophotography has the geometric characteristics of a map and the image qualities of a photograph. These qualities allow for:  distance measurements  area calculations  determination of feature shape  direction calculations  determination of coordinates at a given location.

What is Orthophotography? What is Orthophotography  Definition:  A digital (electronic) aerial photograph that has been corrected to remove distortion from the camera & airplane movement and adjusted to fit the ground surface.

Cameras Distort Images All imagery has spatial error due to the distorting nature of photography.

Acquisition  Vendor Selection. > capacity > technology > value added deliverables  Photo Missions.  Pilot.  Processing & Delivery.

Quality Assurance Critical Part of Project  Vendor Selection  Open and Evaluate Every File  Accuracy Review  Aesthetic Review  Distribution of Final Products

ISTAR / Earthdata

Geographic Coverage  Entire state of Indiana, plus 1000’ buffer around boundary of state.  Includes to edge of opposite river bank on Ohio and Wabash Rivers.  13 “buy-up” Counties.

Orthophotography Product Sets Product Set #1: Quarter-Quad Color Orthophotography (1-meter re-sampled) Product Set #2: County Mosaics Color Orthophotography (1-meter re-sampled) Product Set #3: High-Resolution Natural Color Orthophotography Product Set #4: Color-Infrared Orthophotography (1-meter re-sampled)

Orthophotos will be “Tiled” ~70,000 Tiles!!!

Delivery Coordinate Systems  Indiana East & Indiana West State Plane Coordinate System (feet)  UTM Coordinate System (meters)  NAD83, NAVD88

Deliverables  Deliverables  Delivery 1 – TIFFs and 1:20 MrSID Tiles  Next Deliveries  1:50 MrSID Township Mosaics (State Plane)  1:50 MrSID Township Mosaics (Lat./Long.)  1-meter resampled county mosaics (UTM) statewide set  Value add – AccuGlobe w/Township mosaics and addt’l vector data; ArcReader Emergency Response Map  DEM/DSM  1-meter Color IR (UTM)  Supplemental Delivery – relight areas only

Delivery File Formats  Conventional files formats can be used with almost any system  TIFF with World Files  Compressed MrSID Files  County Mosaics (MrSID) .IMG format for elevation models

Accuracy Specification has 3 “Flavors” Pixel Resolution (Ground Sample Distance) NSSDA Horizontal RMSE Accuracy (95% of points) 1-meter pixel (resampled) 1-foot pixel 5 feet or better 6-inch pixel 2.5 feet or better

Example of one orthophoto tile: 4,000 feet by 4,000 feet 1-foot pixel resolution. Orthos

1-foot pixels

Elevation Products Digital Surface Model (DSM)Digital Elevation Model (DEM)

DEM  A DEM is a series of points which have X,Y,Z coordinates.  DEM’s are used to correct relief displacement (ortho- rectify) in the imagery.  Without further processing, the DEM can hold 10’ contours  With further processing, the DEM can be used for 2-foot contours.

Uses of Color-IR  Mapping and feature extraction of water bodies, wetlands, impervious surfaces, and land cover.  Useful for applications such as drainage management, land cover mapping, and water quality.

Digital Color-IR “false color” 1-meter resampled

Acquisition / Production Tracker

Quality Assurance Tracker

K-12 Education

Delivery Schedule  12 month delivery schedule.  Orthos by end of 2005 – April?.  DEMs & IR to be completed by March  Distributed on DVD, External Hard Drive, Web Map Services, and Downloadable from the IndianaMap Data Clearinghouse. (

Leaf-On Issues  13 Counties with leaf- on problems  2 complete reflights (Perry & Dubois)  Reflights of Failed- Leaf-On

Tornado Track Through Vanderburgh Co.

“Before” and “After” shot of one of the heavily damaged developments near Evansville, IN. Source: 2005 Indiana Aerial Orthophoto Project; and Associated Press

Questions & Comments Jill Saligoe-Simmel, Ph.D. Jim Stout

DEM issues

Weeks