Snímek 5112


původní	zesvětlený	barevně kódovaný

a ještě s vloženou mřížkou s údaji:

(údaj uprostřed políček mřížky je medián surových hodnot zelených pixelů, údaj dole je jas políčka dělený jednou kandelou na metr čtvereční).

# Date/Time    : 2006:02:24 19:13:03
# Resolution   : 1280 x 960 in jpeg (1424x1076 in pgm/5112.pgm)
# Focal length :  5.7mm  (35mm equivalent: 39mm)
# CCD width    : 5.32mm
# Exposure time: 2.000 s 
# Aperture     : f/2.8
# ISO equiv.   : 200

# Selected image percentils         L=(1.730*0.35*R+1.000*0.65*G+1.570*0.00*B)* 1.66E-4
# %    R     G1    G2    B readings  R        G        B        L / cd/m2
  1   -37   -21   -22   -39        -0.0106  -0.00357  -0.0102  -0.00604
 10    11    33    33     6         0.00316   0.00548   0.00156   0.00467
 50    98   141   142    81         0.0282   0.0235   0.0211   0.0251
 90   333   410   411   237         0.0957   0.0682   0.0618   0.0778
 99  3649  6083  6048  3128         1.05     1.01     0.816    1.02  
100 15869 15866 15866 15867         4.56     2.64     4.14     3.31  
# flux from 0.651*0.99 sr ( 8.59E-7 sr/4px) is  0.0302 lx ( 0.0341 lx tilewise);
# tilewise luminance  0.0543 cd/m2 with rel. SD  157 % (summing pixels below 15850 and with non-zero green: there is 98.6 % of them)
# Fuji Devignetting: 1 # dark frame dark/5113.pgm subtracted from all values
# Red  average= 214.2  minimum= -141  maximum=15869   over 15850: 2567 zero:  2.7 %
# GrUp average= 274.9  minimum= -126  maximum=15866   over 15850: 3970 zero:  1.4 %
# GrDw average= 275.6  minimum= -127  maximum=15866   over 15850: 3969 zero:  1.4 %
# Blue average= 182.4  minimum= -138  maximum=15867   over 15850: 1913 zero:  3.6 %

End of results of "raw2lum" (version 1.22) with parameters:
  -c fuji -fa -d dark/5113.pgm -nh -nt -i 5112.txt -t 118 -s71:76 pgm/5112.pgm

Just points with luminances over 0.30 and below 1.0 cd/m². In grid tiles, flux densities from these points and tiles are given.

# Date/Time    : 2006:02:24 19:13:03
# Resolution   : 1280 x 960 in jpeg (1424x1076 in pgm/5112.pgm)
# Focal length :  5.7mm  (35mm equivalent: 39mm)
# CCD width    : 5.32mm
# Exposure time: 2.000 s 
# Aperture     : f/2.8
# ISO equiv.   : 200


# Selected image percentils         L=(1.730*0.35*R+1.000*0.65*G+1.570*0.00*B)* 1.66E-4
# %    R     G1    G2    B readings  R        G        B        L / cd/m2
  1   -37   -21   -22   -39        -0.0106  -0.00357  -0.0102  -0.00604
 10    11    33    33     6         0.00316   0.00548   0.00156   0.00467
 50    98   141   142    81         0.0282   0.0235   0.0211   0.0251
 90   333   410   411   237         0.0957   0.0682   0.0618   0.0778
 99  3652  6083  6048  3128         1.05     1.01     0.816    1.02  
100 15869 15866 15866 15867         4.56     2.64     4.14     3.31  
# flux from 0.00715 sr ( 8.59E-7 sr/4px) is  0.00373 lx (points with luminances over  0.30   and below  1.0   )
# Fuji Devignetting: 1 # dark frame dark/5113.pgm subtracted from all values
# Red  average=3449.6  minimum= -114  maximum=15869   over 15850: 756100
# GrUp average=3420.1  minimum=  -92  maximum=15866   over 15850: 757503
# GrDw average=3444.6  minimum= -127  maximum=15866   over 15850: 757502
# Blue average=3522.1  minimum= -138  maximum=15867   over 15850: 755446

End of results of "raw2lum" (version 1.21) with parameters:
  -c fuji -ft -d dark/5113.pgm -sm100 -nh -L0.3 -U1 -i 5112.txt -e 5112.eps -n 5112.ppm -t 118 -s71:76 pgm/5112.pgm

Just points with luminances below 0.30 and with non-zero green: there is 98.6 % of them cd/m². In grid tiles, flux densities from these points and tiles are given.

# Date/Time    : 2006:02:24 19:13:03
# Resolution   : 1280 x 960 in jpeg (1424x1076 in pgm/5112.pgm)
# Focal length :  5.7mm  (35mm equivalent: 39mm)
# CCD width    : 5.32mm
# Exposure time: 2.000 s 
# Aperture     : f/2.8
# ISO equiv.   : 200

# Selected image percentils         L=(1.730*0.35*R+1.000*0.65*G+1.570*0.00*B)* 1.66E-4
# %    R     G1    G2    B readings  R        G        B        L / cd/m2
  1   -37   -21   -22   -39        -0.0106  -0.00357  -0.0102  -0.00604
 10    11    33    33     6         0.00316   0.00548   0.00156   0.00467
 50    98   141   142    81         0.0282   0.0235   0.0211   0.0251
 90   333   410   411   237         0.0957   0.0682   0.0618   0.0778
 99  3649  6083  6048  3128         1.05     1.01     0.816    1.02  
100 15869 15866 15866 15867         4.56     2.64     4.14     3.31  
# flux from 0.640*0.99 sr ( 8.59E-7 sr/4px) is  0.0214 lx ( 0.0251 lx tilewise);
# tilewise luminance  0.0447 cd/m2 with rel. SD  104 % (points with luminances below  0.30   and with non-zero green: there is 98.6 % of them)
# Fuji Devignetting: 1 # dark frame dark/5113.pgm subtracted from all values
# Red  average= 165.9  minimum= -141  maximum=15869   out of range: 14464 zero:  2.7 %
# GrUp average= 197.6  minimum= -126  maximum=15866   out of range: 15867 zero:  1.4 %
# GrDw average= 198.3  minimum= -127  maximum=15866   out of range: 15866 zero:  1.4 %
# Blue average= 141.2  minimum= -138  maximum=15867   out of range: 13810 zero:  3.6 %

End of results of "raw2lum" (version 1.22) with parameters:
  -c fuji -ft -d dark/5113.pgm -sm100 -nh -U0.3 -i 5112.txt -e 5112.eps -n 5112.ppm -t 118 -s71:76 pgm/5112.pgm

Logaritmická škála jasů (jednotkou je kandela na metr čtvereční, nazývaná též nit) – intenzity osvětlení sněhu v luxech dostanete vynásobením jasu v nitech koeficientem 3,6. U intenzit osvětlení lesní stěny je takový koeficient 20 až 40.