hacks/gamma_graphs.py

   1 #!/usr/bin/python
   2
   3 import matplotlib.pyplot as plt
   4 import numpy as np
   5
   6 x = np.logspace(-3, 0, 100)
   7
   8 plt.loglog(x, pow(x, 2.2))
   9 # plt.loglog(x, pow(x, 2.4))
  10
  11 srgb_linearised = []
  12 for xx in x:
  13     if xx > 0.04045:
  14         srgb_linearised.append(pow((xx + 0.055) / 1.055, 2.4))
  15     else:
  16         srgb_linearised.append(xx / 12.92)
  17
  18 # plt.loglog(x, srgb_linearised)
  19
  20 rec_linearised = []
  21 for xx in x:
  22     if xx > 0.081:
  23         rec_linearised.append(pow((xx + 0.099) / 1.099, 1 / 0.45))
  24     else:
  25         rec_linearised.append(xx / 4.5)
  26
  27 plt.loglog(x, rec_linearised)
  28
  29 plt.show()