Using the Panchromatic band for water column correction to derive water depth and spectral bottom signature: Landsat 8 OLIP bandset used for this work Purple=1, Blue=2, Green=3, PAN=4, Red=5, NIR=6 and SWIR1=7 |
![]() Regression January 7th 2014 vs Sonar Depths RMSE=1.76 m | ![]() Sonar Two Days seatruth depths raster not corrected for tide 15 m GSD see depth legend |
![]() Regression January 7th 2014 vs DTM | ![]() DTM from U. of La Paz, Mexico resampled to 15 m GSD see depth legend |
![]() | ![]() ZDTM+0.5m - Z4SM DTM - January 7th 2014 see legend |
GREEN solution or PAN solution? 15m resampling or not? 15 m PAN-sharpening or not? Smoothing or not? One more trick: apply ZDTM |
![]() Calibration diagram for the whole image for bands Blue, Green, Red and NIR | ![]() Calibration diagram for the whole image for bands Blue, PAN, Red, NIR CoefKPan=1.05 |
| Deeper waters are clearer![]()
|
Calibration diagrams are just as good for a 15m GSD pansharpened image as it is for original 30 m GSD data
![]() | Greensish Coastal_1 water
|
"Stratified waters" ![]() The central channel exhibits clearer waters | "Stratified waters" ![]() Profile Blue location backdrop is a BOA TCC WCC this is suspended particles load
|