Improve brightness detection #65
Description
Bright value seems to be too high. Complete scenes are flagged as bright.
new detection expression should be used along with new threshold od 0.45:
0.3029*B2 + 0.2786*B3 + 0.4733*B4 + 0.5599*B8A + 0.508*B11 + 0.1872*B12