That choice is explained in the README: https://github.com/woltapp/blurhash
(83 is about as many safe characters as you can reasonably find, and it allows some nice ways of packing values together.)
(83 is about as many safe characters as you can reasonably find, and it allows some nice ways of packing values together.)
I wonder how the efficiency compares to just encoding on the bit level.
https://github.com/woltapp/blurhash/blob/master/Algorithm.md
All but the first component of the Fourier transform. (The first component is the average of the data.) The term comes from electrical engineering, but Fourier transform has lots of applications also outside of electrical engineering.