RT Journal Article
T1 Quantitative phase and absorption contrast imaging
A1 Moscoso, Miguel
A1 Novikov, Alexei
A1 Papanicolau, George
A1 Tsogka, Chrysoula
AB We present an algorithm for coherent diffractive imaging with phaseless measurements. It treats the forward model as a combination of coherent and incoherent waves. The algorithm reconstructs absorption and phase contrast that quantifies the attenuation and the refraction of the waves propagating through an object. It requires coherent or partially coherent illuminations, and several detectors to record the intensity of the distorted wave that passes through the object under inspection. The diversity of illuminations, obtained by putting masks between the source and the object, provides enough information for imaging. The computational cost of our algorithm is linear in the number of pixels of the image. Therefore, it is efficient for high-resolution imaging. Our algorithm guarantees exact recovery if the image is sparse for a given basis. Numerical experiments in the setting of phaseless diffraction imaging of sparse objects validate the efficiency and the precision of the suggested algorithm.
PB IEEE
SN 2573-0436
YR 2022
FD 2022-09-12
LK https://hdl.handle.net/10016/36666
UL https://hdl.handle.net/10016/36666
LA eng
NO The work of Miguel Moscoso was supported by the Grant PID2020-115088RB-I00. The work of Alexei Novikov was supported in part by NSF under Grant DMS-1813943 and in part by AFOSR under Grant FA9550-20-1-0026. The work of Chrysoula Tsogka was supported by AFOSR under Grant FA9550-21-1-0196.
DS e-Archivo
RD 30 jun. 2024