Gerchberg-Saxton Phase Retrieval

Iterative algorithm: recover phase from amplitude constraints in image & Fourier domains

Speed: Iter: 0

Target Amplitude |T(x,y)|

Current Estimate

Fourier Amplitude |F(u,v)|

Retrieved Phase φ(x,y)

Error vs Iteration

GS Algorithm: Alternate projections — enforce target amplitude in image domain, free phase in Fourier domain