Hawk, the image reconstruction package

Hawk is an image reconstruction package that can be used to phase oversampled diffraction patterns. It uses iterative phasing algorithms for retrieving the phases totally ab-initio. It implements several algorithms including HIO, RAAR, ER, possibly coupled with the shrinkwrap method.
Reconstruction of a FIB structure image at FLASH [1]. The square window width is 20┬Ám. 1- Henry Chapman, et al: Femtosecond diffractive imaging with a soft-X-ray free-electron laser. Nat. Physics, Vol 2(Dec 2007), 839-843