28 citations · 42 across the 9 of their papers we have counts for
9 papers
On design of hybrid diffractive optics for achromatic extended depth-of-field (EDoF) RGB imaging
Seyyed Reza Miri Rostami, Samuel Pinilla, Igor Shevkunov +2
A hybrid imaging system is a simultaneous physical arrangement of a refractive lens and a multilevel phase mask (MPM) as a diffractive optical element (DOE). The favorable properti…
Hybrid Diffractive Optics Design via Hardware-in-the-Loop Methodology for Achromatic Extended-Depth-of-Field Imaging
Samuel Pinilla, Seyyed Reza Miri Rostami, Igor Shevkunov +2
End-to-end optimization of diffractive optical elements (DOEs) profile through a digital differentiable model combined with computational imaging have gained an increasing attentio…
Unfolding-Aided Bootstrapped Phase Retrieval in Optical Imaging
Samuel Pinilla, Kumar Vijay Mishra, Igor Shevkunov +3
Phase retrieval in optical imaging refers to the recovery of a complex signal from phaseless data acquired in the form of its diffraction patterns. These patterns are acquired thro…
SSR-PR: Single-shot Super-Resolution Phase Retrieval based two prior calibration tests
Peter Kocsis, Igor Shevkunov, Vladimir Katkovnik +2
We propose a novel approach and algorithm based on two preliminary tests of the optical system elements to enhance the super-resolved complex-valued imaging. The approach is develo…
ADMM and Spectral Proximity Operators in Hyperspectral Broadband Phase Retrieval for Quantitative Phase Imaging
Vladimir Katkovnik, Igor Shevkunov, Karen Egiazarian
A novel formulation of the hyperspectral broadband phase retrieval is developed for the scenario where both object and modulation phase masks are spectrally varying. The proposed a…
Power-Balanced Hybrid Optics Boosted Design for Achromatic Extended-Depth-of-Field Imaging via Optimized Mixed OTF
Seyyed Reza Miri Rostami, Samuel Pinilla, Igor Shevkunov +2
The power-balanced hybrid optical imaging system is a special design of a diffractive computational camera, introduced in this paper, with image formation by a refractive lens and…
Lensless hyperspectral imaging by Fourier transform spectroscopy for broadband visible light: phase retrieval technique
Igor Shevkunov, Vladimir Katkovnik, Karen Egiazarian
A novel phase retrieval algorithm for broadband hyperspectral phase imaging from noisy intensity observations is proposed. It utilizes advantages of the Fourier Transform spectrosc…
Hyperspectral holography and spectroscopy: computational features of inverse discrete cosine transform
Vladimir Katkovnik, Igor Shevkunov, Karen Egiazarian
Broadband hyperspectral digital holography and Fourier transform spectroscopy are important instruments in various science and application fields. In the digital hyperspectral holo…
Hyperspectral phase imaging based on denoising in complex-valued eigensubspace
Igor Shevkunov, Vladimir Katkovnik, Daniel Claus +3
A new denoising algorithm for hyperspectral complex domain data has been developed and studied. This algorithm is based on the complex domain block-matching 3D filter including the…