Snímek 5142
| 
| 
| | 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 20:30:11
# Resolution : 1280 x 960 in jpeg (1424x1076 in pgm/5142.pgm)
# Focal length : 13.6mm (35mm equivalent: 92mm)
# CCD width : 5.32mm
# Exposure time: 0.125 s (1/8)
# 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)* 0.00347
# % R G1 G2 B readings R G B L / cd/m2
1 -71 -67 -68 -70 -0.426 -0.234 -0.381 -0.302
10 -35 -32 -32 -34 -0.210 -0.111 -0.185 -0.146
50 0 0 0 0 0.00 0.00 0.00 0.00
90 42 40 41 39 0.252 0.141 0.213 0.180
99 90 89 89 78 0.540 0.309 0.425 0.390
100 15869 15866 15866 15867 95.3 55.1 86.5 69.2
# flux from 0.115*0.56 sr ( 1.51E-7 sr/4px) is 0.00328 lx ( 0.00604 lx tilewise);
# tilewise luminance 0.0462 cd/m2 with rel. SD 219 % (summing pixels below 15850 and with non-zero green: there is 55.5 % of them)
# Fuji Devignetting: 2 # dark frame dark/5154.pgm subtracted from all values
# Red average= 11.7 minimum= -159 maximum=15869 over 15850: 46 zero: 41.1 %
# GrUp average= 12.4 minimum= -138 maximum=15866 over 15850: 55 zero: 44.8 %
# GrDw average= 12.9 minimum= -162 maximum=15866 over 15850: 54 zero: 44.1 %
# Blue average= 5.9 minimum= -147 maximum=15867 over 15850: 12 zero: 44.3 %
End of results of "raw2lum" (version 1.22) with parameters:
-c fuji -fa -d dark/5154.pgm -nh -nt -i 5142.txt -t 118 -s71:76 pgm/5142.pgm
Just points with luminances over 1.0 and below 25 cd/m2.
In grid tiles, flux densities from these points and tiles are given.
# Date/Time : 2006:02:24 20:30:11
# Resolution : 1280 x 960 in jpeg (1424x1076 in pgm/5142.pgm)
# Focal length : 13.6mm (35mm equivalent: 92mm)
# CCD width : 5.32mm
# Exposure time: 0.125 s (1/8)
# 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)* 0.00347
# % R G1 G2 B readings R G B L / cd/m2
1 -71 -67 -68 -70 -0.426 -0.234 -0.381 -0.302
10 -35 -32 -32 -34 -0.210 -0.111 -0.185 -0.146
50 0 0 0 0 0.00 0.00 0.00 0.00
90 42 40 41 39 0.252 0.141 0.213 0.180
99 90 89 89 78 0.540 0.309 0.425 0.390
100 15869 15866 15869 15867 95.3 55.1 86.5 69.2
# flux from 3.48E-4 sr ( 1.51E-7 sr/4px) is 0.00137 lx (points with luminances over 1.0 and below 25 )
# Fuji Devignetting: 2 # dark frame dark/5154.pgm subtracted from all values
# Red average=1064.5 minimum= -135 maximum=15869 over 15850: 763758
# GrUp average= 946.7 minimum= -132 maximum=15866 over 15850: 763767
# GrDw average=1048.1 minimum= -148 maximum=15866 over 15850: 763766
# Blue average= 435.2 minimum= -141 maximum=15867 over 15850: 763724 zero: 2.5 %
End of results of "raw2lum" (version 1.21) with parameters:
-c fuji -ft -d dark/5154.pgm -sm100 -nh -L1 -U25 -i 5142.txt -e 5142.eps -n 5142.ppm -t 118 -s71:76 pgm/5142.pgm
Just points with luminances over 1.0 and below 10 cd/m2.
In grid tiles, flux densities from these points and tiles are given.
# Date/Time : 2006:02:24 20:30:11
# Resolution : 1280 x 960 in jpeg (1424x1076 in pgm/5142.pgm)
# Focal length : 13.6mm (35mm equivalent: 92mm)
# CCD width : 5.32mm
# Exposure time: 0.125 s (1/8)
# 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)* 0.00347
# % R G1 G2 B readings R G B L / cd/m2
1 -71 -67 -68 -70 -0.426 -0.234 -0.381 -0.302
10 -35 -32 -32 -34 -0.210 -0.111 -0.185 -0.146
50 0 0 0 0 0.00 0.00 0.00 0.00
90 42 40 41 39 0.252 0.141 0.213 0.180
99 90 89 89 78 0.540 0.309 0.425 0.390
100 15869 15866 15869 15867 95.3 55.1 86.5 69.2
# flux from 3.14E-4 sr ( 1.51E-7 sr/4px) is 8.56E-4 lx (points with luminances over 1.0 and below 10 )
# Fuji Devignetting: 2 # dark frame dark/5154.pgm subtracted from all values
# Red average= 786.0 minimum= -135 maximum=15869 over 15850: 763980
# GrUp average= 703.7 minimum= -132 maximum=15866 over 15850: 763989
# GrDw average= 790.3 minimum= -148 maximum=15866 over 15850: 763988
# Blue average= 389.2 minimum= -141 maximum=15867 over 15850: 763946 zero: 2.7 %
End of results of "raw2lum" (version 1.21) with parameters:
-c fuji -ft -d dark/5154.pgm -sm100 -nh -L1 -U10 -i 5142.txt -e 5142.eps -n 5142.ppm -t 118 -s71:76 pgm/5142.pgm
Just points with luminances over 10 and below 25 cd/m2.
In grid tiles, flux densities from these points and tiles are given.
# Date/Time : 2006:02:24 20:30:11
# Resolution : 1280 x 960 in jpeg (1424x1076 in pgm/5142.pgm)
# Focal length : 13.6mm (35mm equivalent: 92mm)
# CCD width : 5.32mm
# Exposure time: 0.125 s (1/8)
# 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)* 0.00347
# % R G1 G2 B readings R G B L / cd/m2
1 -71 -67 -68 -70 -0.426 -0.234 -0.381 -0.302
10 -35 -32 -32 -34 -0.210 -0.111 -0.185 -0.146
50 0 0 0 0 0.00 0.00 0.00 0.00
90 42 40 41 39 0.252 0.141 0.213 0.180
99 90 89 89 78 0.540 0.309 0.425 0.390
100 15869 15866 15869 15869 95.3 55.1 86.5 69.2
# flux from 3.35E-5 sr ( 1.51E-7 sr/4px) is 5.16E-4 lx (points with luminances over 10 and below 25 )
# Fuji Devignetting: 2 # dark frame dark/5154.pgm subtracted from all values
# Red average=4466.4 minimum= -135 maximum=15869 over 15850: 765842
# GrUp average=3749.2 minimum= -132 maximum=15866 over 15850: 765851
# GrDw average=4020.6 minimum= -125 maximum=15866 over 15850: 765850
# Blue average=1714.5 minimum= -141 maximum=15867 over 15850: 765808
End of results of "raw2lum" (version 1.21) with parameters:
-c fuji -ft -d dark/5154.pgm -sm100 -nh -L10 -U25 -i 5142.txt -e 5142.eps -n 5142.ppm -t 118 -s71:76 pgm/5142.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.
