Transcript GeoDAS Desktop Software

Oceanic Imaging Consultants, Inc.
Software • Services • Systems
Professional seafloor mapping software, created
by surveyors, for surveyors
1144 10th Avenue, Suite 200 Honolulu, HI 96816-2442
(808) 539-3706
• [email protected]
December 2005
Introduction
to Post-processing
Post-Processing
A Brief Introduction
Introduction to Post-processing
December 2005
What is “Post-processing”?
• Technically, post-acquisition processing
• GeoDAS can process in real-time but:
– Post-processing allow more flexibility and
power in detecting and dealing with data
noise and image artifacts.
– Post-processing tools allow you to review
all your data, for creation of better mission
products
Introduction to Post-processing
December 2005
Why Do Post-processing?
• Clean up noise in the data
• Remove data artifacts
• Make mission products,
– Maps
– DEM’s
– Target locations
Introduction to Post-processing
December 2005
Typical sidescan artifacts
Beam Pattern
Artifacts
Bottom-tracking
Errors
Gain Changes
Introduction to Post-processing
December 2005
Typical Bathymetry Artifacts
Depth outliers
(noisy data)
Introduction to Post-processing
December 2005
Typical navigation and heading
Noisy
navigation and
heading data
Introduction to Post-processing
December 2005
OIC Options for Post-processing
• GeoDAS-Desktop.
– Economic solution for data replay, navigation
editing and production of simple mosaics.
• OICToolkit.
– UNIX-based full-featured post-processing
package.
• OICcleansweep.
– New, PC-based post-processing package for
sidescan and bathymetry.
Introduction to Post-processing
December 2005
Introducing OICcleansweep:
Post-processing for Windows
Introduction to Post-processing
December 2005
OICcleansweep
• Retains many of the features of OICToolkit
– “swath-based” processing
– “point & click” selection of data
– Interactive editing of gains & bottom-tracking
• Adds new, more powerful features
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Better data and swath bookkeeping
Navigation “wizard” to aid in sensor re-nav
“Quality” based filtering for bathymetry
More powerful mosaicking tool allows interactive
blending of multiple swaths
– Target-marking tool allows clipping of full-resolution
GeoTIFFs from sidescan, and pasting them on mosaics
Introduction to Post-processing
December 2005
Superimposition of EOID GeoTIFF
Target Snippets on Sidescan Mosaic
Introduction to Post-processing
December 2005