Georeferencing Maps with Contours in I2K.

Tyler J. Alumbaugh and Peter Bajcsy

Technical Report NCSA-ALG02-0001, October 2002

In this report we present an overview of the georeferencing capabilities in our Image to Knowledge (I2K) software that enables registration of digital maps (raster data) with contours (vector data). This document outlines the theory and standards used for proper geographic referencing of digital maps. Given 2D maps and 3D contours, georeferencing transformations are described for translating between spatial points specified in three different coordinate systems: latitude/longitude, UTM, and pixel.

In the I2K work, we interpret and utilize georeferencing parameter information embedded in different types of digital maps to provide a system that can geo-register contours for several popular map types. This document serves as a guideline for other scientists trying to geo-register maps and contours.