https://www.interviewcake.com/concept/python/bit-shift
Bit Shifting (left shift, right shift) | Interview Cake
A bit shift moves each digit in a set of bits left or right. The last bit in the direction of the shift is lost, and a 00 bit is inserted on the other end.
bit shiftingleftrightinterviewcake
https://pure.dongguk.edu/en/publications/periocular-recognition-based-on-lbp-method-and-matching-by-bit-sh/
Periocular recognition based on LBP method and matching by bit-shifting - Dongguk University