původní | barevně kódovaný |
# Date/Time : 2007:07:23 10:39:58 # Resolution : 1280 x 960 in jpeg (1424x1076 in pgm/49.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 -43 -41 -40 -58 -0.0989 -0.0538 -0.121 -0.0696 10 0 0 0 -16 0.00 0.00 -0.0334 0.00 50 154 138 139 36 0.354 0.184 0.0751 0.244 90 922 756 757 153 2.12 1.01 0.319 1.40 99 2792 2423 2429 456 6.42 3.22 0.951 4.34 100 16163 16136 16160 15990 37.2 21.5 33.4 27.0 # flux from 0.653*0.94 sr ( 8.59E-7 sr/4px) is 0.349 lx ( 0.366 lx tilewise); # tilewise luminance 0.652 cd/m2 with rel. SD 107 % (summing pixels below 15850 and with non-zero green: there is 93.6 % of them) # Fuji Devignetting: 1 # dark frame pgm/61.pgm subtracted from all values # Red average= 380.6 minimum= -137 maximum=16163 over 15850: 808 zero: 6.2 % # GrUp average= 329.8 minimum= -158 maximum=16136 over 15850: 684 zero: 6.5 % # GrDw average= 330.0 minimum= -148 maximum=16160 over 15850: 686 zero: 6.3 % # Blue average= 76.3 minimum= -167 maximum=15990 over 15850: 278 zero: 14.4 % End of results of "raw2lum" (version 1.22) with parameters: -c fuji -fa -sm100 -nh -nt -d pgm/61.pgm -i 49.txt -e 49.eps -n 49.ppm -t 118 -s71:76 pgm/49.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.