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Table 1 BLDF lighting simulations and comparison results

From: Integrating building information modeling and virtual reality development engines for building indoor lighting design

Points Illuminance levels (lux) BLDF error Illuminance levels (lux) Radiance error Illuminance levels (lux)  
  Sensor Reading BLDF Radiance 3ds Max 3ds Max error
(a) 10:00 a.m. (daylight)
 A 864 870 0.69% 819.14 5.42% 789 8.68%
 B 910 870 4.39% 800.09 12.07% 868 4.61%
 C 792 750 5.30% 782.38 1.21% 767 3.15%
 D 667 670 0.45% 708.49 6.22% 940 40.92%
 E 754 725 3.84% 847.35 12.38% 662 12.20%
 F 720 670 6.94% 738.82 2.61% 711 1.25%
Average 3.61%   6.65%   11.80%
(b) 10:10 a.m. (daylight + artificial lights)
 A 1203 > 1000 1102.06 1064
 B 1350 > 1000 1175.67 1145
 C 1012 950 6.12% 982.36 2.92% 876 13.43%
 D 895 900 0.55% 952.15 6.85% 1234 37.87%
 E 982 950 3.25% 925.38 5.76% 951 3.15%
 F 956 850 11.08% 964.17 0.85% 824 13.80%
Average 5.25%   4.09%   17.06%
(c) 8.00 p.m. (artificial lights)
 A 832 850 2.16% 837.13 0.61% 732 12.01%
 B 875 825 5.71% 847.62 3.12% 774 11.54%
 C 768 750 2.34% 750.20 2.31% 519 32.42%
 D 822 850 3.40% 833.16 1.35% 891 8.39%
 E 844 850 0.71% 845.58 0.18% 850 0.71%
 F 722 750 3.87% 747.89 3.58% 521 27.83%
Average 3.03%   1.85%   15.48%