Because we have a LIDAR coverage,
we can research the conditions which may yield correct results:
The outcome is:
- one must be very strict to ensure consistency of the model
- this can be achieved without use of the LIDAR data
- tools in 4SM have been developped to that effect
- This image is not worthy of 4SM work
Optical calibration
under mask_3
Under mask 3 Calibration diagram for bands_27_22_13_7 only under mask 3 colored orange: this excludes the outer slopes colored red It shows
| Mask 3 is colored orange |
| First, to achieve a good linear fit below for the BLUEvsGREEN pair, I had to raise substantially LswGREEN BEFORE: LswGREEN=23.7  BLUE vs GREEN BEFORE | This does not involve knowledge of bathymetry AFTER: LswGREEN=30.4  BLUE vs GREEN AFTER |
| Then, to achieve the good fit below, I had to raise substantially LswPAN BEFORE: LswPAN=19.8  GREEN solution vs PAN solution BEFORE | This does not involve knowledge of bathymetry AFTER: LswPAN=21.9  GREEN solution vs PAN solution AFTER |
Optical calibration
under mask_6
Under mask 6 Calibration diagram for bands_27_22_13_7 only under mask 6 colored red this is the outer reef ridge colored red It shows
| Mask 6 is colored red |
| First, to achieve a good linear fit below for the BLUEvsGREEN pair, I had to raise substantially LswGREEN BEFORE: LswGREEN=25.5  BLUE vs GREEN BEFORE Under mask 6 colored red | This does not involve knowledge of bathymetry AFTER: LswGREEN=29.3  BLUE vs GREEN AFTER Under mask 6 colored red |
| Then, to achieve the good fit below, I had to raise substantially LswPAN BEFORE: LswPAN=19.8  GREEN solution vs PAN solution BEFORE | This does not involve knowledge of bathymetry AFTER: LswPAN=21.6  GREEN solution vs PAN solution AFTER |
Calibration diagram
for the whole image
For mask_3 and mask_6 combined Calibration diagram for bands_27_22_13_7 for the masks 3 and 6 combined using mask_3 calibration QUITE CONFUSING
| For the whole scene Calibration diagram for bands_27_22_13_7 for the whole image using mask_3 calibration MUCH THE SAME
|
Spectral 2K in m-1 
|
