Project Anvil (Applied Analysis Spectral Analytical Program) is a software
program that is currently part of the ERDAS imagery processing package. Anvil
takes MultiSpectral imagery, using ERDAS, and goes inside of a pixel to
determine the content of the pixel, rather then classifying the whole pixel as
current techniques do. Current technology can classify down to as little as 20%
of a pixel. This means that if the object you are looking for takes up only 20%
of the area of the pixel, you should still be able to identify it. A quick
example of the process is as follows. You have a SPOT or Landsat Multispectral
image of an area and you are looking for something specific, i.e., concrete
roads. By going into the image and already knowing spectral properties of many
items in the scene, i.e. grass, trees, etc, you can remove all of these and if
the remaining spectral properties match that of the type of road you are looking
for, that basically means you have road there.
Current projects include: