2003 Marion County Orthophotography

Dataset Basics

Marion County 2003 orthoimagery was provided by the Indianapolis Mapping and Geographic Infrastructure System.

Source imagery Information:
  • Coverage = Marion County IN, plus 1 mile collar.
  • AGFA True Color film negatives.
  • Scale = 1:9600 NCS (Negative Contact Scale).
  • Flight Height Average = 5000 feet AGL (Above Ground Level), Airborne GPS (Global Positioning System) with IMU (Inertial Measurement Unit).
  • Camera = Zeiss RMK TOP 15, Focal Length 153mm, Gyro-Stabilized Mount and FMC (Forward Motion Compensation).
  • Horizontal Coordinate System = Indiana State Plane East, Zone 1301.
  • Geodetic Model = NAD (North American Datum) of 1983.
  • Resolution = 0.5 foot pixel, International Survey Feet.
  • Rectification = 2003 AT (Analytical Triangulation) and DEM (Digital Elevation Model) from 2003 LIDAR Derived Surface model for 1 inch =100 feet NMAS (National Map Accuracy Standards) orthophotography.  Scanned from negatives.
  • Dates of Photography =  03/16/03 South third, 04/11/03 remainder
Note regarding processing provided by Mathew McCormack (IMAGIS Contact): Individual photos were captured on film in the photo mission by flight line and frame. The film negatives are then scanned, and after the process of orienting and rectifying the selected frames, portions of individual photos are mosaicked to create a seamless single image of the entire project area.  After the mosaic has been created the image is essentially chopped up into tiles, the row/column format.  It is not possible at this time to know exactly which photo or photos where used for each of the tiles, nor the date or dates.
 
 
Vendor:
    GRW, Inc.
    801 Corporate Drive
    Lexington, KY  40503

 

Available Datasets

2003 Marion County Orthophotography (GeoTIFF)

Imagery from the 2003 orthophotography project for Marion County.

File Format

Images are available in GeoTIFF format (6 inch resolution)