|
|
|
Land
Mapping >
Photogrammetry Services
Photogrammetry
Services
Project Planning and Management
- Dedication to the technical specifications, delivery schedule and client
expectations are key to project success.
- Experienced project managers liaise with
clients and oversee all project stages.
- Rigorous quality control procedures and interim progress reports are standard.
Flight and GCP Planning and Aerial Photo Acquisition
- Detailed flight planning with the optimal
amount of ground surveying
keeps costs
manageable without reducing accuracy.
- Airborne GPS is used to bolster accuracy and reduce costly
field
surveys wherever possible.
- Local survey partners may gather the GCP coordinates while local
aircraft use USGS-calibrated cameras.
- Black & white, color and infra-red photography requirements are all
accommodated.
- Detailed, advanced film inspection is also available.
|
|
top
Scanning
- High resolution scanners and powerful image acquisition
and
processing software are used.
-
Resolution as detailed as 7 microns is
possible.
- Films, contact prints and diapositives can
be converted into various digital file
formats.
- Sample scans may
be produced for clients for review and approval.
|
|
top
Aerotriangulation
- State-of-the-art Softcopy photogrammetric workstations are used.
- Automated AT is available
but manual AT processing is preferred for its
higher accuracy.
- A root mean square (RMS) error of less
than [1/10,000 times flying height] is typical.
|
|
top
Topographic and Planimetric Feature Extraction
- Extraction occurs in a Microstation environment and can be exported to any
CAD/GIS format.
- Planimetric feature extraction follows applicable feature tables
or database dictionaries.
- High quality DTM, DEM and/or contour files are derived by our team of
experienced photogrammetrists.
- IIC
has extensive expertise with large and small scale mapping (1"=40’ and smaller).
top
Digital Elevation and Terrain
Modeling (DEM, DTM)
- IIC
excels at high resolution TIN and surface model preparation.
- Optimal data collection methods and meticulous modeling capabilities are implemented.
- Automatic contour generation and advanced manual contour smoothing can be performed.
- IIC has expertise in working with hard and soft breaklines and high density mass points.
|
|
top
Map Editing
- IIC
delivers innovative mapsheet layout and design with advanced contour
interpolation.
- Cleaning and topological structuring of planimetric data is
also provided.
- A variety of cartographic editing, layout and
separation
processes are available.
top
Digital Orthophotography
- IIC
uses the latest, superior quality orthorectification techniques.
- Advanced methods used to correct camera, lens and relief distortions.
- Further processing includes precise dodging, mosaicking and global tone
balancing.
- Seamlines are generated automatically and edited manually to
ensure seamlessness between the tiles.
- Special attention is given to bridges to avoid smearing at the
stereo compilation level.
- An intense quality assurance process ensures 100% adherence to customer
specifications.
|
|
top
|
