What are the functions of FB, FBC, F2B and FBFy in your code?

Thanks for your contribution, it is wonderful.I see FB, FBC, F2B and FBFy are used for FFT in your codes, but I don't know the exact functions of them.I would appreciate it if you could tell me.

Hi,

these variables are indeed some intermediate variables produced by this function

DiffPIR/utils/utils_sisr.py

Line 78 in 36e81bc

def pre_calculate(x, k, sf):

and then used to calculate the data-solution as in eq(14) in DPIR

DiffPIR/utils/utils_sisr.py

Line 65 in 36e81bc

def data_solution(x, FB, FBC, F2B, FBFy, alpha, sf):