HJW COMPLETES DELIVERY OF SPRING 2005 ORTHOPHOTOS TO CLARK COUNTY, NEVADA

Oakland, California, June 24, 2005 – HJW GeoSpatial (HJW), Inc. has recently completed delivery of spring 2005 orthophotos of Clark County, NV. The delivery completes a bi-annual cycle of orthophoto updates for the rapidly-changing county.

Clark County uses orthophotography as an integral component to its GIS system. Since 1982, Clark County has played an active role in GIS development and utilization, and they are continually enhancing their capabilities.

HJW acquires color aerial photography at a scale of 1:15,000 (1” = 1250’). The flight mission utilizes the Applanix airborne GPS/IMU position and orientation system, used to geo-reference the photography. The photography is scanned in-house at 20 micron (1270 dpi) resolution to support the generation of orthophotos with one-foot pixel size. The terrain data used to generate the orthophotos was produced using a combination of USGS DTM and auto-correlated DTM.

Two flight missions occur each year, one in the spring and one in the fall, and acquire approximately 3000 exposures. The resulting orthophotos are mosaicked, tiled and assembled by township and range sections for the County GIS database.

Prior to this project, HJW has been awarded the bi-annual mapping of Clark County since 1998.