Program LESSA - Lineament Extraction and Stripe Statistical Analysis - automatically extracts linear image features and analyzes their orientation and spatial distribution. LESSA provides picture (texture) description in the way common for the geological research: rose-diagrams, densities of features with certain orientation, schemes of long lineaments, and several new descriptors of the rose-diagram features are also provided: vectors and lines of elongation, local rose diagrams difference and the others.

LESSA methods could be applied to different types of data - gray tone image, binary schemes (drainage network, for example), digital terrain map (DTM) - giving territory description in a common way (lineament analysis algorithms details ...).

LESSA provides researcher with the objective data that can assist in decision making. Provided information can be used for the interactive analysis (lineament schemes, rose-diagrams, pseudocoloured density images) and for automatic analysis (in GIS).

LESSA gives an opportunity to compare orientation information that was obtained for the given territory: from different spectral zones, different date etc.

LESSA was intensively used for about 25 years, so image analysis algorithms reliability and lineament analysis methodological problems were examined.

How to analyze LESSA results one can find in the South-West Africa image processing example.

LESSA uses advantages of special image processing systems and hardware (versions).We have experience in adopting LESSA for such systems and in developing new specials tools.

LESSA - its program structure and lineaments analysis applications - are described in printed articles and Internet recourses.

One can get more information about LESSA testing it with his own data and/or use free distributed version.