tmnov tutorial   Model 1
First modeling straight from the AutoCAL process
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  • It shall be seen that an acceptable calibration which yields acceptable results
    • is a fuzzy concept in respect of the many parameters involved
    • even though we are using a simplified radiative transfer model
  • What is important
    • is not that a physically exact calibration has been achieved
    • leave that for the big whigs at US Naval Research Laboratory
  • Rather what is important to us
    • is that a coherent set of calibration parameters be assembled
    • so that an acceptable and useful result be produced :
      • SDB and bottom type classification
    • using only the image
  • 4SM offers an integrated set of ergonomic tools to achieve that
    • within a short time frame

Please run Model 1
straight copied from the AutoCal.txt text file, runs for 20 seconds
#Following is the simplified AutoCal CommandLine=====mBPL=2 ======on Sat Nov 25 14:06:38 2017
#Line_1 Model_1=============Model_1=============Model_1=============
nice -20  ./4SM.8.02 -Process/25_Nov_2017  -Origin/FUGRO-NPA @@
-DB/tmnov/31_3s_0s_0s/4_1/1265_1560/208.350_2398.770 @@
-Mis/Bahamas/Caicos/Landsat/TM/FUGRO-NPA/bOA/UTM_+19_008/0.0300_0.0300/22_NOV_1990 @@
@WLM/518.0/610.0/693.0/905.0 @@
@WLm/452.0/529.0/624.0/776.0 @@
@WL/0485.0/569.5/658.5/840.5 @@
-Lsw/060.5/017.4/011.1/006.9_Lsw_AutoCal @@
@dLsw/0-1.3/00-0.5/00-0.3/00-0.1_dLsw @@
-dLsw/000.0/000.0/000.0/000.0 @@
-Lw/0010.0/001.5/000.0/000.0_Lw_AutoCal @@
-M/@000001/00002/00003/00004_M @@
-Lm/0001.0/001.0/001.0/255.0_Lm @@
-LsM/203.6/112.8/136.1/111.3_LsM_AutoCal @@
@CP/192.58/99.02/87.90/10.43_0.75m @@
-KK1_2_0.5141/Knir4.5/CoefK_1.0/mask_3 @@
-Z/NA0.00d/N_1/nDR_34_1000_zDTM/mask_3 @@
-B/tclNe/cNorm2.50/Bmin0/cLM1.00 @@
-deglint/vRbaD/GlintM25 255 @@
@AutoCAL/R2_0.95/Land_-5.0_1.18_4s/GlintM25 @@
-extract/v/rawBDH/FullBDH/NIRband4/NIRmax255.0/mBPL2 /mask_3 @@
-Calibrate/voAI/BDSNpZG/BDh_12_13_34 @@
-Model/v/rt1.00/dTM/ZM30/mask_3 @@
-smooth/5/D/Smart+ -LL10 @@
@-DN300/100/3/comment @-DDshp @-DNshp @-Eshp @-E/1/1265/1/1560 @@

This was obtained in the AutoCal process,
through KIKJ regression and optimization of LsM.

  • disable any @-DD... and @-DN... arguments
  • disable -calibrate...  argument
  • enable -Smooth.....   argument
  • run the script
Please, display the results in OpenEV
the illustrations below  were obtained in 2011 using 4SM.4.08

WZ in channel 6
use 4sm.calls/pct/pctwZ.leg

RED for the Red solution
GREEN for the Green solution

WR in channel 7

use 4sm.calls/pct/pctWR.leg
radius of the circular smoothing kernel:
from pink=1 for one pixel
to green=5 for five pixels


Z   scaled 0-250 dm in channel 8

use 4sm.calls/pct/pctZ250.leg
please note that Z2 is underestimated
in comparison with Z3

Sorry: image B is missing

B scaled 0-200 in channel 10

use 4sm.calls/pct/pctB.leg
tmnov_tutorial_Model_1_LBnormalized LB normalized scaled 0-255
This true color color composite enhances
the spectral content of the "water-column corrected"
true color composite view of the scene
BGR : channels 12, 13 and 14 
please note that the bright green tones
appear to be "too much"!
 LB scaled 0-255
This is the most desired "water-column corrected"
true color composite view of the scene.
I call it a "low tide view".
BGR : channels 28, 29, 30

Deglinted natural radiances
This true color color composite shows
a "deglinted" view of the raw scene
BGR : channels 24, 25, 26

<<==Deglinted/smoothed view of the raw scene

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