waimanalowv-raw

The final stuff is at Using Ron's deglinted image

The data
2 m pixel size, courtesy of Ron Abileah

This dataset from Ron Abileah is comprised of

WV2 8-bands image, 3289x3241 pixels, rotated by 90 ° (????????)
WV2 8-bands images decluttered by Ron
SHOALS depth in meters - this is the depths from the SHOALS LIDAR re-sampled to the image pixels.
WKB depth - this is the depth solution from Ron's wave kinematics algorithm using 2 images separated 10 seconds

TCC this scene has been rotated by 90°	FCC
USGS's SHOALS Depths your previous DTM is in centimeters	USGS's SHOALS Depths in meters: this DTM is 1, 2, 3... by discrete values of meters
908 nm White pixels are at 16U=0	831 nm White pixels are at 16U=0
724 nm White pixels are at 16U=0	659 nm

April 10th
Some BiDimensional histograms

Some BiDim histogram raw data whole image 2 vs 3, 2 vs 4, 2 vs 5	Some BiDim histogram raw data whole image 5 vs 6, 5 vs 7, 5 vs 8
	Please note that all histograms start at Zero for all bands This can't be raw data! Why have this data been truncated? It upsets my 4SM routine. 4SM expects raw data from data provider

April 10th
Optical calibration

One of the unknowns at this stage is the effective operational wavelength for each WV2 waveband, as regards the use of Jerlov's data for estimating spectral K in m-1 for visible bands
- by visual inspection of the computed depths profiles, I seem to need WL[yellow]~=603.6 nm, and other visible bands at mid-waveband
call this "depth estimates when initialized with SHOALS depths"
hopefully, and over time, and after processing some clear-cut WV2 images with fair coverage of bright bottom substrates over the whole depth range, this shall become expert knowledge and field data will not be needed at all for calibration, just as is the case when using narrow bands of CASI and HYPERION hyperspectral images where wavelengths are much easier to specify
latest seatruth results seem to consolidate this view: CoefZ~=1.00 fits the situation
then see No need for field data

Calibration for bands 5, 4, 3 and 2	Calibration for bands 5, 4, 3 and 1
Wavelengths adopted are: -WL/427.0/477.5/546.0/603.6/659.0/724.0/831.0/908.0	Oceanic water is as clear as it can possibly get This calibration seems to confirm that wavelengths must be offset from mid-wavebands towards shorter values this is clearly the case for the yellow bands, as is the case for red and green