Digital Maps and Geospatial Data | Princeton University
2006 New Orleans High Resolution Orthoimagery
- Author(s):
- U.S. Geological Survey (USGS)
- Publisher:
- Tempe, AZ: Aerials Express, [2006] .
- Access:
- Public
- Description:
- High resolution orthorectified images combine the image characteristics of an aerial photograph with the geometric qualities of a map. An orthoimage is a uniform-scale image where corrections have been made for feature displacement such as building tilt and for scale variations caused by terrain relief, sensor geometry, and camera tilt. A mathematical equation based on ground control points, sensor calibration information, and a digital elevation model is applied to each pixel to rectify the image to obtain the geometric qualities of a map. A digital orthoimage may be created from several photographs mosaicked to form the final image. The source imagery may be black-and-white, natural color, color infrared, or color near infrared (4-band) with a pixel resolution of 1-meter or finer. With orthoimagery, the resolution refers to the distance on the ground represented by each pixel.
- Place(s):
- New Orleans
- Subject(s):
- Imagery and Base Maps
- Held by:
- Princeton
- Rights Statement:
- Copyright Not Evaluated
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