Sparse superresolution phase retrieval from phase-coded noisy intensity patterns

作者：Katkovnik Vladimir^*; Egiazarian Karen

来源：Optical Engineering, 2017, 56(9): 094103.

DOI：10.1117/1.OE.56.9094103

• superresolution
• phase retrieval
• complex-domain sparsity
• phase imaging
• discrete optical signal processing

We consider a computational superresolution inverse diffraction problem for phase retrieval from phase-coded intensity observations. The optical setup includes a thin lens and a spatial light modulator for phase coding. The designed algorithm is targeted on an optimal solution for Poissonian noisy observations. One of the essential instruments of this design is a complex-domain sparsity applied for complex-valued object (phase and amplitude) to be reconstructed. Simulation experiments demonstrate that good quality imaging can be achieved for high-level of the superresolution with a factor of 32, which means that the pixel of the reconstructed object is 32 times smaller than the sensor's pixel. This superresolution corresponds to the object pixel as small as a quarter of the wavelength.

• 出版日期2017-9