help-B

Syntax_B
Specify the coding for Bottom Reflectance

-B/tclNe/cNorm2.5/LBref200_100/Bmin0/cLM1.00

TCLNE

-B/tclne/.......BSflag=5 Land areas are coded 0 in spectral low tide view full

T(t).............write a TOA(BOA) spectral image

C(c)............write a Chequered spectral image
L(l).............lands are set at Black=0
N(n)...........NORMflag to "normalize" LBS

E(e)............EXTBflag to extrapolate LBS : only if SIGflag>0 in -Z... argument

obsolete since RLBgb was introduced

-B/tcLne/......BSflag=4 Write a spectral BOA ranged 0-250 low tide view full

-B/tCLne/......BSflag=3 Write a spectral BOA ranged 0-250 low tide view chequered

-B/TcLne/......BSflag=2 Write a spectral TOA water-column corrected low tide view full

-B/TCLne/......BSflag=1 Write a spectral TOA water-column corrected low tide view chequered

cNorm2.5

.../cNorm2.5/.........CoefNORM Normalization Coefficient

LBref

LBref[1]=200 max bottom brightness in imageB for the 1-band case
LBref[2]=100 max bottom brightness in imageB for the 1-band case for areas masked at 236 -like outer reef slopes

BMin

BMin =10 if B<BjMin, the pixel shall

either be coded DeepWater
or processed as the one-band case using LBref[1]
default is Bmin=0

cLM

cLM =1.15 coefficient applied to LM values:

LsM=La+(LsM-La) *CoefLM
default is CoefLM=1.000
run the -Calibrate/...
- inspect your screen
do not forget to
- change for new -LsM... in the command line
- return CoefLM to1: this is the default
  - .../cLM 1.15 is allright: this is the default

bot[1]_bot[2]_bot[3]_bot[4] is optional:

the following values are provided in 4SM_DEFAULTS anyway: 0_200_254_253