ao a1 a2 as a4 as Q6 
[s !] | [sr - rad ^] | [sr ! - rad7?] | [sr^! - rad?] | [sr^!] | [rad 4] [rad-?] 
Spectralon 0.153 -0.0260 0.0041 -0.0149 0.0178 1715 1.11 
Sprayed Aluminum 0.165 -0.0232 0.0157 -0.0130 0.42 1.50 21.73 
Plastic 0.252 -0.0361 -0.0099 0.0073 0.0708 0.98 8.39 
Concrete 0.053 0.0062 -0.0053 0.0094 0.0099 1.39 2.17 
Slate 0.0149 0.0029 -0.0043 0.0001 0.0702 1.66 4.84 
Sprinkled wall paper | 0.0156 0.0053 -0.0018 -0.0054 0.0251 1.12 2.60 
Roofing tile 0.078 0.0128 -0.0123 -0.0087 0.0364 1.14 2.07 
Table 11: Coefficients of the BRDF of the samples 
at À = 650 nm (cf. equation 7) 
ao a1 a2 a3 a4 as ae 
(st 3 [ier !-rad [fer rad?) {Isr trad”? | [sr | frad 4) | (rad) 
Spectralon 0.154 -0.0246 0.0039 -0.0147 0.0184 1.15 1.08 
Sprayed Aluminum 0.163 -0.0232 0.0154 -0.0115 0.43 1.55 22.0 
Plastic 0.271 -0.0391 -0.0122 0.0146 0.0629 1.01 8.07 
Concrete 0.053 0.0065 -0.0060 0.0087 0.0088 1.47 2.17 
Slate 0.0164 0.0020 -0.0037 0.0009 0.0708 1.70 4.88 
Sprinkled wall paper | 0.0176 0.0050 -0.0016 -0.0063 0.0239 1.17 2.93 
Roofing tile 0.110 0.0109 -0.0213 0.0014 0.0394 1.15 1.81 
Table 12: Coefficients of the BRDF of the samples 
at À = 750 nm (cf. equation 7) 
ao Q1 a2 a3 aa a5 ae 
[s7!| | (sr! - rad^*] | [sr! -radz?] | [sr rad” 4A As ! | frad ^] | [rad 7] 
Spectralon 0.154 -0.023 0.0037 -0.0145 0.019 1.15 1.06 
Sprayed Aluminum 0.138 -0.0184 0.0158 -0.0136 0.43 1.56 224 
Plastic 0.273 -0.0389 -0.0121 0.0166 0.0564 1.03 7.98 
Concrete 0.052 0.0072 -0.0066 0.0077 0.0087 1.50 2.22 | 
Slate 0.0138 0.0029 -0.0040 0.0001 0.0725 1.67 4.91 
Sprinkled wall paper | 0.0190 0.0050 -0.0015 -0.0072 0.0241 1.17 3.06 
Roofing tile 0.104 0.0117 -0.0191 -0.0018 0.0395 1.16 1.88 
  
  
  
  
  
  
  
  
  
  
Table 13: Coefficients of the BRDF of the samples 
at À = 850 nm (cf. equation 7) 
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B7. Vienna 1996 
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