Snímek 5243
| 
| 
| | 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 : 2006:02:26 18:33:00
# Resolution : 1280 x 960 in jpeg (1424x1076 in pgm/5243.pgm)
# Focal length : 5.7mm (35mm equivalent: 39mm)
# CCD width : 5.32mm
# Exposure time: 0.001 s (1/2000)
# Aperture : f/8.0
# ISO equiv. : 200
# Selected image percentils L=(1.730*0.35*R+1.000*0.65*G+1.570*0.00*B)* 5.42
# % R G1 G2 B readings R G B L / cd/m2
1 -72 -68 -69 -70 -676 -372 -596 -478
10 -37 -34 -34 -36 -347 -184 -307 -241
50 0 0 0 0 0.00 0.00 0.00 0.00
90 28 25 25 26 263 136 221 180
99 57 54 54 55 535 293 468 378
100 15854 15866 15848 7014 1.49E5 8.60E4 5.97E4 1.08E5
# flux from 0.654*0.47 sr ( 8.59E-7 sr/4px) is -11.3 lx (-22.5 lx tilewise);
# tilewise luminance -38.8 cd/m2 with rel. SD-68.3 % (summing pixels below 15850 and with non-zero green: there is 47.3 % of them)
# Fuji Devignetting: 1 # dark frame dark/5238.pgm subtracted from all values
# Red average= -5.2 minimum= -163 maximum=15854 over 15850: 1 zero: 46.8 %
# GrUp average= -4.9 minimum= -137 maximum=15866 over 15850: 1 zero: 52.9 %
# GrDw average= -5.5 minimum= -142 maximum=15848 over 15850: 2 zero: 52.5 %
# Blue average= -5.9 minimum= -149 maximum= 7014 over 15850: 0 zero: 50.1 %
End of results of "raw2lum" (version 1.22) with parameters:
-c fuji -fa -d dark/5238.pgm -nh -nt -i 5243.txt -t 118 -s71:76 pgm/5243.pgm
Colour scale begins at 0.4 mcd/m2 instead of
at 0.04 mcd/m2.
Just points with luminances over 5.0E3 cd/m2.
In grid tiles, flux densities from these points and tiles are given.
# Date/Time : 2006:02:26 18:33:00
# Resolution : 1280 x 960 in jpeg (1424x1076 in pgm/5243.pgm)
# Focal length : 5.7mm (35mm equivalent: 39mm)
# CCD width : 5.32mm
# Exposure time: 0.001 s (1/2000)
# Aperture : f/8.0
# ISO equiv. : 200
# Selected image percentils L=(1.730*0.35*R+1.000*0.65*G+1.570*0.00*B)* 5.42
# % R G1 G2 B readings R G B L / cd/m2
1 -72 -68 -69 -70 -676 -372 -596 -478
10 -37 -34 -34 -36 -347 -184 -307 -241
50 0 0 0 0 0.00 0.00 0.00 0.00
90 28 25 25 26 263 136 221 180
99 57 54 54 55 535 293 468 378
100 15866 15866 15866 15866 1.49E5 8.61E4 1.35E5 1.08E5
# flux from 7.54E-5 sr ( 8.59E-7 sr/4px) is 1.10 lx (points with luminances over 5.0E3 )
# Fuji Devignetting: 1 # dark frame dark/5238.pgm subtracted from all values
# Red average=2184.7 minimum= -139 maximum=15854 over 15850: 766022
# GrUp average=2462.4 minimum= -136 maximum=15866 over 15850: 766022
# GrDw average=2444.0 minimum= -118 maximum=15848 over 15850: 766023
# Blue average= 963.0 minimum= -129 maximum= 7014 over 15850: 766021 zero: 1.1 %
End of results of "raw2lum" (version 1.21) with parameters:
-c fuji -ft -d dark/5238.pgm -sm100 -nh -L5000 -BL0.4 -i 5243.txt -e 5243.eps -n 5243.ppm -t 118 -s71:76 pgm/5243.pgm
Just points with luminances over 1.0E4 cd/m2.
In grid tiles, flux densities from these points and tiles are given.
# Date/Time : 2006:02:26 18:33:00
# Resolution : 1280 x 960 in jpeg (1424x1076 in pgm/5243.pgm)
# Focal length : 5.7mm (35mm equivalent: 39mm)
# CCD width : 5.32mm
# Exposure time: 0.001 s (1/2000)
# Aperture : f/8.0
# ISO equiv. : 200
# Selected image percentils L=(1.730*0.35*R+1.000*0.65*G+1.570*0.00*B)* 5.42
# % R G1 G2 B readings R G B L / cd/m2
1 -72 -68 -69 -70 -676 -372 -596 -478
10 -37 -34 -34 -36 -347 -184 -307 -241
50 0 0 0 0 0.00 0.00 0.00 0.00
90 28 25 25 26 263 136 221 180
99 57 54 54 55 535 293 468 378
100 15866 15866 15866 15866 1.49E5 8.61E4 1.35E5 1.08E5
# flux from 4.11E-5 sr ( 8.59E-7 sr/4px) is 0.873 lx (points with luminances over 1.0E4 )
# Fuji Devignetting: 1 # dark frame dark/5238.pgm subtracted from all values
# Red average=3149.3 minimum= -139 maximum=15854 over 15850: 766062
# GrUp average=3564.4 minimum= -118 maximum=15866 over 15850: 766062
# GrDw average=3684.3 minimum= -118 maximum=15848 over 15850: 766063
# Blue average=1310.1 minimum= -129 maximum= 7014 over 15850: 766061
End of results of "raw2lum" (version 1.21) with parameters:
-c fuji -ft -d dark/5238.pgm -sm100 -L10000 -i 5243.txt -e 5243.eps -n 5243.ppm -t 118 -s71:76 pgm/5243.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.
