Snímek 5280
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| | původní | zesvětlený | barevně kódovaný
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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 20:22:45
# Resolution : 1280 x 960 in jpeg (1424x1076 in pgm/5280.pgm)
# Focal length : 19.2mm (35mm equivalent: 130mm)
# CCD width : 5.32mm
# Exposure time: 0.008 s (1/125)
# Aperture : f/3.2
# ISO equiv. : 200
# Selected image percentils L=(1.730*0.35*R+1.000*0.65*G+1.570*0.00*B)* 0.0542
# % R G1 G2 B readings R G B L / cd/m2
1 -70 -67 -67 -69 -6.57 -3.63 -5.88 -4.66
10 -35 -32 -32 -34 -3.28 -1.74 -2.90 -2.28
50 0 0 0 0 0.00 0.00 0.00 0.00
90 35 33 33 34 3.28 1.79 2.90 2.31
99 73 70 71 71 6.85 3.82 6.05 4.88
100 9910 13895 13020 15818 930 730 1.35E3 800
# flux from 0.0580*0.49 sr ( 7.57E-8 sr/4px) is 0.00542 lx ( 0.0106 lx tilewise);
# tilewise luminance 0.159 cd/m2 with rel. SD 568 % (summing pixels below 15850 and with non-zero green: there is 48.7 % of them)
# Fuji Devignetting: 2 # dark frame dark/5276.pgm subtracted from all values
# Red average= 2.0 minimum= -150 maximum= 9910 over 15850: 0 zero: 46.4 %
# GrUp average= 3.6 minimum= -153 maximum=13895 over 15850: 0 zero: 51.6 %
# GrDw average= 3.4 minimum= -147 maximum=13020 over 15850: 0 zero: 51.1 %
# Blue average= 1.5 minimum= -143 maximum=15818 over 15850: 1 zero: 48.9 %
End of results of "raw2lum" (version 1.22) with parameters:
-c fuji -fa -d dark/5276.pgm -nh -nt -i 5280.txt -t 118 -s71:76 pgm/5280.pgm
Just points with luminances over 40 and below 5.0E2 cd/m2.
In grid tiles, flux densities from these points and tiles are given.
# Date/Time : 2006:02:26 20:22:45
# Resolution : 1280 x 960 in jpeg (1424x1076 in pgm/5280.pgm)
# Focal length : 19.2mm (35mm equivalent: 130mm)
# CCD width : 5.32mm
# Exposure time: 0.008 s (1/125)
# Aperture : f/3.2
# ISO equiv. : 200
# Image percentils L=(1.730*0.35*R+1.000*0.65*G+1.570*0.00*B)* 0.0542
# % R G1 G2 B readings R G B L / cd/m2
1 -70 -67 -67 -69 -6.6 -3.6 -5.9 -4.66
10 -35 -32 -32 -34 -3.3 -1.7 -2.9 -2.28
50 0 0 0 0 0.0 0.0 0.0 0.00
90 35 33 33 34 3.3 1.8 2.9 2.31
99 73 70 71 71 6.8 3.8 6.0 4.88
100 9910 13895 13020 15818 9.3E2 7.3E2 1.3E3 800
# flux from 3.48E-5 sr ( 7.57E-8 sr/4px) is 0.00310 lx (points with luminances over 40 and below 5.0E2 )
# Fuji Devignetting: 2 # dark frame dark/5276.pgm subtracted from all values
# Red average=1039.6 minimum= -119 maximum= 9910 over 15850: 765653
# GrUp average=1594.7 minimum= -153 maximum=13895 over 15850: 765653
# GrDw average=1553.0 minimum= -114 maximum=13020 over 15850: 765653
# Blue average= 797.8 minimum= -143 maximum=15818 over 15850: 765653
End of results of "raw2lum" (version 1.19) with parameters:
-c fuji -ft -d dark/5276.pgm -sm100 -nh -L40 -U500 -i 5280.txt -e 5280.eps -n 5280.ppm -t 118 -s71:76 pgm/5280.pgm
Just points with luminances over 40 and below 60 cd/m2.
In grid tiles, flux densities from these points and tiles are given.
# Date/Time : 2006:02:26 20:22:45
# Resolution : 1280 x 960 in jpeg (1424x1076 in pgm/5280.pgm)
# Focal length : 19.2mm (35mm equivalent: 130mm)
# CCD width : 5.32mm
# Exposure time: 0.008 s (1/125)
# Aperture : f/3.2
# ISO equiv. : 200
# Selected image percentils L=(1.730*0.35*R+1.000*0.65*G+1.570*0.00*B)* 0.0542
# % R G1 G2 B readings R G B L / cd/m2
1 -70 -67 -67 -69 -6.57 -3.63 -5.88 -4.66
10 -35 -32 -32 -34 -3.28 -1.74 -2.90 -2.28
50 0 0 0 0 0.00 0.00 0.00 0.00
90 35 33 33 34 3.28 1.79 2.90 2.31
99 73 70 71 71 6.85 3.82 6.05 4.88
100 9910 13895 13020 15818 930 730 1.35E3 800
# flux from 1.76E-5 sr ( 7.57E-8 sr/4px) is 8.51E-4 lx (points with luminances over 40 and below 60 )
# Fuji Devignetting: 2 # dark frame dark/5276.pgm subtracted from all values
# Red average= 555.3 minimum= -119 maximum= 9910 over 15850: 765879
# GrUp average= 934.6 minimum= -153 maximum=13895 over 15850: 765879
# GrDw average= 913.9 minimum= -114 maximum=13020 over 15850: 765879
# Blue average= 494.1 minimum= -143 maximum=15818 over 15850: 765880
End of results of "raw2lum" (version 1.21) with parameters:
-c fuji -ft -d dark/5276.pgm -sm100 -nh -L40 -U60 -i 5280.txt -e 5280.eps -n 5280.ppm -t 118 -s71:76 pgm/5280.pgm
Just points with luminances over 60 and below 5.0E2 cd/m2.
In grid tiles, flux densities from these points and tiles are given.
# Date/Time : 2006:02:26 20:22:45
# Resolution : 1280 x 960 in jpeg (1424x1076 in pgm/5280.pgm)
# Focal length : 19.2mm (35mm equivalent: 130mm)
# CCD width : 5.32mm
# Exposure time: 0.008 s (1/125)
# Aperture : f/3.2
# ISO equiv. : 200
# Selected image percentils L=(1.730*0.35*R+1.000*0.65*G+1.570*0.00*B)* 0.0542
# % R G1 G2 B readings R G B L / cd/m2
1 -70 -67 -67 -69 -6.57 -3.63 -5.88 -4.66
10 -35 -32 -32 -34 -3.28 -1.74 -2.90 -2.28
50 0 0 0 0 0.00 0.00 0.00 0.00
90 35 33 33 34 3.28 1.79 2.90 2.31
99 73 70 71 71 6.85 3.82 6.05 4.88
100 9910 13895 13020 15818 930 730 1.35E3 800
# flux from 1.72E-5 sr ( 7.57E-8 sr/4px) is 0.00225 lx (points with luminances over 60 and below 5.0E2 )
# Fuji Devignetting: 2 # dark frame dark/5276.pgm subtracted from all values
# Red average=1581.5 minimum= -119 maximum= 9910 over 15850: 765884
# GrUp average=2349.5 minimum= -153 maximum=13895 over 15850: 765884
# GrDw average=2269.5 minimum= -114 maximum=13020 over 15850: 765884
# Blue average=1106.9 minimum= -143 maximum=15818 over 15850: 765885
End of results of "raw2lum" (version 1.21) with parameters:
-c fuji -ft -d dark/5276.pgm -sm100 -nh -L60 -U500 -i 5280.txt -e 5280.eps -n 5280.ppm -t 118 -s71:76 pgm/5280.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.
