scene LC80340432018162LGN00, June_11th_2018
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WARNING: the optical calibration does not account 
for complex optical properties in the channel

Thick haze is well deglinted
Overcast skies <==> CoefK~=0.0
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Data and Deglinting

TOA TCC: raw image
logarithmic enhancement

BOA TCC deglinted image
logarithmic enhancement


Deglinting of haze is excellent
Dense fog remains
Glint regressions using SWIR1

R2 values are very high
There is no noticeable sun/sky glint,
but rather thick and variable haze/fog

15 m resampling does not increase noise
Special effect mask mSE
Location of Profile_RED
backdrop is a TCC of deglinted data

 
  • turquoise rectangle: shapefile dLsw.shp is shown: 
    • this is where deep water radiance is adjusted,
    •  just over waypoint B1 of Profile_red
  • Profile Yellow is also shown

Radiances along Profile_Red


Optical calibration for the whole image
This calibration does not account
for the complex optical properties in the channel

Calibration for the whole image
for bands Blue, Green, Red and NIR

 

Calibration for the whole
for bands Blue, Green, PAN, and NIR

 
   



Ready for modeling

True Color Composite
of BOA WCC radiances scaled 0-250
this is early March
B=Coastal band        in channel 34
G=Green  band         in channel 35
R=Blue    band         in channel 36
 

Retrieved depth
backdrop of TOA TCC
see legend
Maximum BOAWCC reflectance (0-1)
for this scene 0.168/0.211/0.281/0.319/0.385/0.518/0.518
To convert BOAWCC radiances
into calibrated reflectances
CoastalRefectance=CoastalBOAWCC*0.168/250
BlueRefectance    =    BlueBOAWCC*0.211/250
GreenRefectance  =  GreenBOAWCC*0.281/250
Maximum shallow bottom reflectance (0-1)
for coral sands
-RM/0.310/0.380/0.440/0.550/0.560/0.670/0.700

Coral sand is approx twice brighter
than brightest sands in this scene.

Average bottom brightness
see legend for image B
see the same view on Jan 18th 2018
 
15 m GSD, smart-smoothed
  • not_PANsharpened: sharpening becomes redundant/pointless, thanks to:
    • improved co-registration of the PANchromatic band with the MULTI bands (might still be improved further)
    • combined with 15 m resampling of MULTI bands to match the PANchro GSD
  • smart-smoothing then becomes desirable/necessary


Profile Yellow
Depth  && watercolumn corrected
reflectance along Profile Yellow

Profile Yellow location
backdrop is BOA TCC WCC radiances
on June 11th 2018

see the same view  on Jan 18th 2018

 

Profile Yellow
compares the Green and PAN solutions

 

Profile Yellow: Z3 vs Z4
GREEN solution versus PAN solution







 



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