Syntax_MakePIX
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1 - NO NEED for field data, nor for atmospheric correction
2 - this is demonstrated in this website, using a variety of hyper/multi spectral data
 
Requirements are
1 - homogeneous water body and atmosphere
2 - some coverage of optically deep water
3 - some coverage of dry land
 
Problems are
1 - the precision on estimated depth is found wanting, because the noise-equivalent change in radiance  of accessible data is too high for shallow water column correction work 
2 - radiance data should be preprocessed by the provider at level 1 in order to improve S/N ratio
3 - exponential decay: the deeper/darker the bottom, the poorer the performances
 
So
I keep digging
until suitable data
become available
 
 
Create a PCIDSK file database.pix
and run the AutoCalibration

see also Syntax_AutoCAL
-MakePIX/PISA
  • MakePIX....................................to create the working database.pix  
  • P(p)...........................................to start by purging the working directory....mandatory
  • I(i)............................................then to import rawdata.............................mandatory
  • S(s)...........................................then to scale 16U data.............................mandatory
  • A(a)...........................................then to perform the Autocalibration...........mandatory
-MakePIX/Pisa
  • to purge your directory before archiving,
  • or ensure you are taking a fresh start,
  • then stop
-MakePIX/pISA
  • to create the database,
  • import raw data,
  • scale data,
  • and run the AutoCalibration,
  • then stop
-MakePIX/PISA
  • to purge your directory,
  • then  create the database,
  • then import raw data,
  • then scale data,
  • then  run the AutoCalibration,
  • then stop