You create a virtual reality by putting an early map on top of a modern one. That's what georeferencing means. In this way you compare old to new situations. The georeferenced map layers show the ...

Chapter 5: Georeferencing and Digitizing 5.1 Georeferencing Techniques 5.2 What Is Digitizing? 5.3 Digitizing a Georeferenced Map (Part I) 5.4 Digitizing a Georeferenced Map (Part II) 5.5 Adding ...

Have you ever found a historic or hand drawn map and wished you could layer it on top of a satellite image or digital street map? You can! Georeferencing is the process of warping a digital map so ...

Topographic map of the Netherlands from 1745. “Sometimes a map can be as long as seven metres. So we scan it in parts.” Marco van Egmond, map curator at the Department of Special Collections of ...

IGIS Tech Notes describe workflows and techniques for using geospatial science and technologies in research and extension. They are works in progress, and we welcome feedback and comments below. GIS ...

For more than a decade, the military has been struggling with cataloging and retrieving its huge libraries of full motion video (FMV). The video, captured by both manned and unmanned aircraft, rapidly ...