Bottom typing strategy

Once the modeling scenario is deemed final,

the process of bottom typing using 4SM for a BGRN image involves
 
  • choosing some training sites as polygon shapefiles in OpenEV
  • extracting and displaying their bottom type signatures (see below: an automated process in 4SM)
  • running the classification:
    • this reads the water-column corrected LB channels
    • works out the skewness (Blue/Green) and brightness of the spectral water-column corrected radiance for the current pixel
    • and compares it to the database of all available training site signatures using a tolerance CoefSIG
  • settling for a value of CoefSIG
    • too high CoefSIG results in 0% of un-classified pixels and/or too few classes
    • too low CoefSIG results in too many classes and/or or too many un-classified pixels
  • reducing the amount of un-classified pixels by adding more training sites
  • running the classification again and again
  • until satisfied that a reasonable series of bottom types describes the whole spectral content of the shallow bottoms

These water-column corrected results
(along with the water depths if desired)
are now available
for the final process of habitat mapping
using expert knowledge and ground-truth data.

 


 

10 to 16
Six green signatures
 three-bands case
       
30 to 37
Seven purple signatures
 three-bands case
       
40 to 46
Seven

two-bands case signatures
are not presented

           
 



  bottom type classification

  bottom typing statistics
   
 

These water-column corrected results
(along with the water depths if desired)
are now available
for the final process of habitat mapping
using expert knowledge and ground-truth data.


 

nice -20 4SM.3.14 -Process/20_JUL_2009
-dB/dubaiIK/31_1_4_0/4_33/3294_3012/286.947479_2767.543207/1_1
@dB/dubaiIKraw/0_0_4_0/4_1/3294_3012/286.947479_2767.543207/1_1
-Origin/USF_dubai_4b.pix
-Mis/UAE/DUBAI/Ikonos/BGRN/USF/UTM_40_008/.004_.004/02_MAY_2001
@URL/file:///home3/ymorel/RSPwebsite/website
-MakePIX
-import/dubaiIKraw/dnnc_0_0_4_0/chIn1,4/chOut33,36
-SCL/0103/0127/0111/0096
-LS/1154/1641/1662/1567
-Lm/1.0/1.0p/2.5p/255.0
-AutoCAL/Mask/cloud/print_1_2/GlintM_58.7

#Following is the full CommandLine=====mBPL=2==================================
#/home3/ymorel/4SM/compile.sh
nice -20  ./4SM.3.14 -Process/20_JUL_2009    -OriginUSF_dubai_4b.pix       
-DB/dubaiIK/31_1_4_0/4_33/3294_3012/286.947_2767.543/1_1       
-Mis/UAE/DUBAI/Ikonos/BGRN/USF/UTM_40_008/0.004_0.004/29_JUL_2001       
@-URL/file:///home/ymorel/RSPwebsite/website/                   
-makePIX/FILE/8/Z20                               
-import/dubaiIKraw/dbnc_0_0_4_0/R3294_L3012/chIn1,4/chOut33,36/dbiw_0_0_3294_3012   
-LS/1154/1641/1662/1567                               
-makeLand/offset5.0/slope1.18                           
-WLM/515.9/595.5/697.7/852.7                           
-WLm/444.5/506.4/631.8/757.3                           
-cWL/0.500/0.860/0.500/0.500                           
-M/@00001/00002/00003/00004                           
-CP0145.87/108.48/048.08/028.70                           
-CP/121.2/082.3/000.0/000.0_Z=6.50m                       
-CP/115.0/075.8/000.0/000.0_Z=6.50m                       
-LsM/201.82/195.60/204.33/189.82_CoefLM=1.00                   
-Lsw/106.90/73.00/39.40/28.70                           
-La00096.90/72.00/39.40/28.70                           
-Lm/1.0/1.0p/2.5p/255.0                               
@Lm/1.0/1.0p/302.5p/255.0                           
-SCL/103/127/111/96                               
-KK1_2_0.7386/Knir4.500/Bm400_BG500_GR600_RN700                   
-Z/0.00/zplus/cSL1.18/ZMax0.00/cdZ1.00/PAN_1_4/sIG_0w0/N_1/cZ1.000       
-Prepare/scale/delimb/fill/smooth/linearize                   
-B/tclNe5.00/LBref200_100/Bmin0/cLM1.00                       
-deglint/vRba/DegTol0.50/F1/L4/GlintM58.7/FN/mDEGLINT1               
-extract/v/NIRband4/NIRmax5.0/mBPL2/mSOIL21                   
-calibrate/v/BDSNpz/BC_4_3_2_1/BDh_12_13_34                   
-Model    @-Tc1/2                                   
-Smooth/5/D/Smart+                               
-Classify/typer_Plot/Classifier_6.0_0_f/modaFilter_5_11_16           




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