How can it be 0.6 m footprint? The answer is: by "positioning the virtual Google Earth eye at the proper altitude and geometry" against a backdrop of a 0.6 m panchromatic image
0.5x0.6 m footprint
No NIR band NIR-based deglinting is impossible. Lucky there is no adverse wind-generated sea surface clutter over the reef system. This is a severe limitation of GE-derived images for shallow water work.
Dynamic range This data fills the whole 0-255 dynamic range: this helps a lot
I used strictly the same mask into channel_4already used in shirahoQBPS_20070702.pix
deeper than that, over the outer reef slope, deglinting would be absolutely necessary, but is impossible.
GE image is much easier to calibrate, thanks to the wider dynamic range and lesser level of noise
Lsw and Lw
The main features of a satisfactory calibration are available
it requires a seasonned practioner though
the estimation of deep water reflectance Lsw and water volume reflectance Lw is more a question of experience and logic with this image...
GE-derived image exhibits a very weird bi-dimensional histogram Blue vs Red raw radiances here. This has nothing to do with Mother Nature!! Do you have a clue? Is it caused by 0-255 scaling at GoogleEarth? Or their pan-sharpenning process?
Water column correction
GE TCC TOA raw data Please note : linear enhancement
GE TCC TOA water column corrected data Please note : enhancement is identical to that of the raw TCC