slcOLI_20171115

Investigating a LUT approach using Landsat 8 data

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scene LC80340432017319LGN00 November 15th 2017

Data and Deglinting

TOA TCC: raw image logarithmic enhancement	TOA TCC deglinted image logarithmic enhancement
Glint regressions using SWIR1 R2 values are fairly high 15 m resampling does not increase noise
Location of Profile_RED backdrop is a TCC of deglinted data

Optical calibration for the whole image

Calibration diagram for the whole image for bands Blue, Green, Red and NIR	Calibration diagram for the whole image for bands Blue, Green, PAN, NIR CoefKPan=1.05
K_BLUE/K_GREEN~=0.65 Jerlov water type OII nice linear BPL line: denotes homogeneous brightest bottom in homogeneous waters	This calibration suits both sides of Espiritu Santo Island

Calibration for bands Blue, Green, PAN, NIR for SanLorenzo Channel , under mask_3	The SL Channel warrants a specific calibration of water optical properties 0-4m water type Coastal_1 Kblue/Kgreen~=0.95 4-30m water type OII+0.3 Kblue/Kgreen~=0.75

Ready for modeling

True Color Composite of BOAWCC radiances scaled 0-250 B=Coastal band in channel 34 G=Green band in channel 35 R=Blue band in channel 36 Greenery soon after the monsoon	Retrieved depth see legend
Maximum BOAWCC reflectance (0-1) for this scene -RM/0.134/0.174/0.232/0.263/0.334/0.450/0.431 To convert BOAWCC radiances into calibrated reflectances CoastalRefectance=CoastalBOAWCC0.134/250 BlueRefectance = BlueBOAWCC0.174/250 GreenRefectance = GreenBOAWCC*0.232/250	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	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