Forest analysis under partly cloudy conditions for large mosaics of CASI data

Airborne multi-spectral (CASI) imagery has been acquired for several operat ional forestry project areas in BC. The imagery from separate flight lines have been mosaiced and georeferenced using TRIM digital elevation models. A nalysis algorithms were developed to enable interpretation of the imagery i n sunny, partly cloudy or totally cloudy situations. The output products in cluded land classifications, crown closure and stem counts. Some of the ana lysis problems and techniques are discussed with example imagery showing th e results. The final products include maps generated at a 1:10,000 scale ac cording to BCGS mapsheet numbering.