In the aftermath of hurricane Katrina,
FLI-MAP was contracted by US Army Corps of Engineers to conduct damage assessment surveys on over 400 miles of levees in the vicinity of New Orleans. The survey was conducted over a period of six days
The FLI-MAP 400 system is fitted with 5 digital cameras
Forward facing video (30 degrees below horizontal)
Vertical looking video
Forward facing still (30 degrees below horizontal)
Mapping camera (vertical still)
Line Scan
Video imagery is recorded in MPEG 4 (Avi) format at a resolution of 720 x 576 pixels.
Still imagery is captured using 11 Megapixel digital cameras (4000 x 2672 pixels), providing a native resolution (Ground Seperation Distance - GSD) of less than 3cm at typical data collection altitude.
Line scan imagery is used to colorize each laser point collected in near real-time.
Video imagery may be viewed directly in 3rd party software applications (PLS-CADD, Arc Map) using JCLS's DV Controlled software plug-in.
Click on samples below to enlarge:
Forward Looking Video
Down Looking Video
Forward Looking Still
Mapping Camera
Orthophotography
Either the line scan camera or the mapping camera imagery may be used to produce high-resolution orthophotography.
The line scan imagery is used to colorize the laser data, which is dense enough to provide orthophotography at resolutions down to 0.5 feet per pixel.
The mapping camera imagery can be orthorectified using the LiDAR data, tiled and matched to provide orthophotograpy down to 0.25 feet per pixel.
Both products are highly accurate geospatially (roughly 1 foot)
