Digital
aerial imagery has been around for almost a decade and since the early part of
the millennium, large format frame cameras, oriented with Inertial Measurement
units couple to GNSS receivers have provided almost fully automated workflows
from acquisition through to digital orthorectification.
Also, digital
imagery offers 4 band multispectral imagery at hitherto unavailable
photogram-metrically accurate levels. These four bands can be carried
right through to orthorectification and mosaicing permitting remote sensing use
of the resultant images.
LIDAR
technology which has been around since the mid 1990’s is now no longer the sole
source of digital surface modeling. The use of high overlap imagery
enables the extraction of very dense point clouds at higher accuracy per flying
height than LIDAR. DSM technologies can not only be used to create
subsequent elevation and terrain models, but are also useful in their own
right.
The uses of
direct digital imagery are in all ways based on replacing large format film
surveys, plus the following:
- AUTOMATED ORTHO IMAGE CREATION
- AUTOMATED DIGITAL SURFACE MODELLING
- MULTI SPECTRAL IMAGE ANALYSIS IN 4 SIMULTANEOUS BANDS
- HIGH RESOLUTION RECONAISSANCE IMAGES FOR WILDLIFE SURVEYS
- ACCELERATED WORKFLOWS
ALEXANDER M. GIANNELIA, B.A.A
President
THE AIRBORNE SENSING CORPORATION
Ste. 110 Hangar 6
TORONTO CITY CENTRE AIRPOT
TORONTO, Ontario
M5V 1A1
Phone (416) 203-9858
Fax (416) 203-9843
Cell (416) 529-0070
email: ag@airsensing.com
WEB: www.airsensing.com