Extracting buildings with IMAGINE Objective: Indepth

[uncgrl84]

I've worked with this kind of feature extraction with Overwatch Geospatial's Feature Analyst software. Do you know how this compares to that program?

[1ananderson]

ERDAS will continue to resell the Feature Analyst products as well as offering IMAGINE Objective because we see two very different approaches being used. As with most image classification techiques you'll find that one package works better in some circumstances and another in others - it's always going to be down to the exact problem you are trying to solve and the data layers available to you.

[ninefourMC]

That was very interesting, thanks. How well does this building footprint extraction process work in densely built up areas with varying building types? Is it just a matter of using more "rules"?

(BTW I came to this site through the erdas imagine newsgroup.)

[1ananderson]

Dense urban is always going to be an issue. More often than not you'll be better served using a stereo feature extraction package (such as Stereo Analyst for ArcGIS) to manually capture dense urban features than tryign to use an automated feature extraction package.