1991 STS-43 Shuttle polarimetric imagery was used to calculate a degree of linear polarization (DoLP) image, registered
to a 1994 NW Madagascar Landsat 5 scene. The Jeffries-Matusita (J-M) distance and Transformed Divergence (TD)
were calculated for every class-pair of a 13-class ISODATA classification, using 6 TM (Thematic Mapper) bands, and
TM bands plus DoLP. Separabilities were also calculated using just TM bands 7, 4, and 2 and compared against them
plus DoLP. There was a small, consistent increase in spectral separability for all class-pairs with the addition of DoLP.
A similar experiment was done using 1999 Landsat 7 imagery covering the area of the 1994 NASA BOREAS
experiment. The separabilities were calculated for just a 742 combination and 742 plus DoLP created from the airborne
POLDER sensor. The maximum increase in separability provided by DoLP was nearly 5-fold greater than for the
Madagascar imagery. The separabilities were compared also for bands 742 plus DoLP with 742 plus band 1 and 742
plus band 5. As with band 1, band 5 improved more class-pair separabilities than DoLP, but the average amount of
improvement was more than 4-times greater for DoLP for those class-pairs that saw improvement, versus those that were
better separated by band 5. The J-M distance predicts better classification performance for DoLP compared to bands 1
and 5, while the TD suggests slightly better performance for band 5 over DoLP or band 1.