On board processing - OPB
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On board processing - OPB Hot Spots 18 channels Ring Buffe r Map Manager Request Interpre ter Ground Statio n Relatio nal Databas e (SQLite ) Preproc essing Algorith ms Georectif y Post process ing Request er FRP Normaliz ed Differen ce <= 5 channels
description
18 channels.
Transcript of On board processing - OPB
On board processing - OPB
Hot Spots
18 channels
RingBuffer
Map Manager
RequestInterpreter
GroundStation
RelationalDatabase(SQLite)
Preprocessing
Algorithms
Georectify
Post processing
Requester
FRP
NormalizedDifference
<= 5 channels
Pre-processing/Product Relationships
DC Radiance
Reflectance
Temp. Hot Spots.
ScaledVisualProduct.
FRP
NormalizedDifference
Multi-ClassShapefile
Raw data
Intermediate
DerivedOutput
“Real”Output
Improvements
• Increase automation – ground station front end
• Addition of a relational database - currently used to set-up requests for known targets and log requests sent.
• Variable buffer size – trade off between responsiveness and histogram variation
• “Science” products – FRP, Normalized Difference
Real time georectification
Good relative with properboresighting.
Elevation change and importance of a good DEM
Adding Algorithms
• Designed with this in mind – fairly easy but does require recompilation
• Database (somewhat spatial), meta-data, simple thresholding, normalized differences
• Would lend itself well to unsupervised clustering algorithms
• Processing time for “real time” turnaround varies with scanrate and buffer size selected. At a scanrate of 11sps, there 1.8 min., to 54sec. of processing time for 1200 and 600 line buffer respectively.
