ascii_convert.py

#!/usr/bin/env python

# https://stackoverflow.com/a/74186686
ascii = list(
    " `.-':_,^=;><+!rc*/z?sLTv)J7(|Fi{C}fI31tlu[neoZ5Yxjya]2ESwqkP6h9d4VpOGbUAKXHm8RD#$Bg0MNWQ%&@")
lum = [0, 0.0751, 0.0829, 0.0848, 0.1227, 0.1403, 0.1559, 0.185, 0.2183, 0.2417, 0.2571, 0.2852, 0.2902, 0.2919, 0.3099, 0.3192, 0.3232, 0.3294, 0.3384, 0.3609, 0.3619, 0.3667, 0.3737, 0.3747, 0.3838, 0.3921, 0.396, 0.3984, 0.3993, 0.4075, 0.4091, 0.4101, 0.42, 0.423, 0.4247, 0.4274, 0.4293, 0.4328, 0.4382, 0.4385, 0.442, 0.4473, 0.4477, 0.4503, 0.4562, 0.458,
       0.461, 0.4638, 0.4667, 0.4686, 0.4693, 0.4703, 0.4833, 0.4881, 0.4944, 0.4953, 0.4992, 0.5509, 0.5567, 0.5569, 0.5591, 0.5602, 0.5602, 0.565, 0.5776, 0.5777, 0.5818, 0.587, 0.5972, 0.5999, 0.6043, 0.6049, 0.6093, 0.6099, 0.6465, 0.6561, 0.6595, 0.6631, 0.6714, 0.6759, 0.6809, 0.6816, 0.6925, 0.7039, 0.7086, 0.7235, 0.7302, 0.7332, 0.7602, 0.7834, 0.8037, 0.9999]

for (c, l) in list(zip(ascii, lum)):
    print("{ " + str(l) + "f, '" + c + "' },")