Phase retrieval implies extraction of the phase of a complex signal ƒ from its modulus |ƒ|. We give examples where an additional constraint is imposed: knowledge of the modulus of <i>F</i>, the Fourier transform of ƒ. The retrieval is accomplished by computer processing of samples of |ƒ| and |<i>F</i>|. The problems of noisy data and nonuniqueness are addressed.
© 1976 Optical Society of America
R. A. Gonsalves, "Phase retrieval from modulus data," J. Opt. Soc. Am. 66, 961-964 (1976)