původní | barevně kódovaný |
# Date/Time : 2007:07:23 10:41:48 # Resolution : 1280 x 960 in jpeg (1424x1076 in pgm/52.pgm) # Focal length : 5.7mm (35mm equivalent: 39mm) # CCD width : 5.32mm # Exposure time: 0.250 s (1/4) # 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)* 0.00133 # % R G1 G2 B readings R G B L / cd/m2 1 -28 -26 -26 -55 -0.0644 -0.0345 -0.115 -0.0450 10 28 27 27 -12 0.0644 0.0359 -0.0250 0.0458 50 208 183 183 42 0.478 0.243 0.0876 0.325 90 998 850 849 155 2.29 1.13 0.323 1.54 99 2821 2464 2466 495 6.49 3.28 1.03 4.40 100 16302 15997 15997 15998 37.5 21.3 33.4 26.9 # flux from 0.653*0.97 sr ( 8.59E-7 sr/4px) is 0.407 lx ( 0.423 lx tilewise); # tilewise luminance 0.760 cd/m2 with rel. SD 104 % (summing pixels below 15850 and with non-zero green: there is 97.3 % of them) # Fuji Devignetting: 1 # dark frame pgm/61.pgm subtracted from all values # Red average= 427.3 minimum= -116 maximum=16302 over 15850: 935 zero: 2.7 % # GrUp average= 370.6 minimum= -125 maximum=15997 over 15850: 845 zero: 2.7 % # GrDw average= 370.7 minimum= -143 maximum=15997 over 15850: 836 zero: 2.7 % # Blue average= 78.4 minimum= -169 maximum=15998 over 15850: 339 zero: 11.5 % End of results of "raw2lum" (version 1.22) with parameters: -c fuji -fa -sm100 -nh -nt -d pgm/61.pgm -i 52.txt -e 52.eps -n 52.ppm -t 118 -s71:76 pgm/52.pgm
Meze stupňů jsou (bráno pro řád jednoho nitu) 0.32 0.50 0.79 1.26 2.0 3.2
Odhady intenzity osvětlení asfaltových cest v luxech lze získat vynásobením jasu v nitech koeficientem 15 (pokud se v něm lampa leskne) až 30, běžně kolem 22.