Layered Annotations of Digital Images for Data Collection in the Field.

James Cross Chris Baber Sandra I. Woolley Layered Annotations of Digital Images for Data Collection in the Field. 154-159 2003 conf/iswc/2003 ISWC http://doi.ieeecomputersociety.org/10.1109/ISWC.2003.1241405 db/conf/iswc/iswc2003.html#CrossBW03