Resolution-enhanced imaging using interferenceless coded aperture correlation holography with sparse point response

Ratnam, Mani Maran; Rosen, Joseph

doi:10.1038/s41598-020-61754-0

Cited by 19 publications

(7 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As one of the incoherent 3D imaging techniques, interferenceless coded aperture correlation holography (I-COACH) technique attracted the focus of increasing research interest in recent years for its advantages such as wide spectrum, nonscanning 3D imaging and high-axial resolution [9][10][11] , and various imaging enhancement methods [12][13][14][15][16][17][18][19] and potential application sceneries have been development [20][21][22][23][24][25] . This technique modulates the incident light waves by a wave-front pseudo-random coded phase mask (CPM) to record a series of point spread holograms (PSHs) along z-axial depth and one object hologram (OH) and enables thick 3D objects to be imaged within a calibrated axial range.…”

Section: Introductionmentioning

confidence: 99%

Annular multi-focal-phase mask multiplexing based large depth of field imaging by interferenceless coded aperture correlation holography

Liu

Wan

et al. 2023

Preprint

View full text Add to dashboard Cite

Extending depth-of-field (DOF) of the imaging system without modifying the structure and sacrificing imaging performances of the optical system is of great significance to broaden the capability and application of the imaging system. In this paper, the interferenceless coded aperture correlation holography(I-COACH) is developed to be a large-depth incoherent imaging system by employing an annular multi-focal coded phase mask (AM-CPM). Based on the analyses of axial defocus characteristics in I-COACH, the defocus compensation function is defined and the AM-CPM is designed and multiplexed on the system optical pupil, which plays the role of a gradual lens. In AM-CPM, multi-annular zones with different focal lengths are used to compensate different axial defocus aberrations and adjacent annular zones have symmetric axial defocus aberration correction capability according to the imaging characteristics of the system. The simulations and experimental results fully demonstrate that the axial point spread function distribution of the system obtained by AM-CPM is continuous and the development method enables the extension of the DOF of the I-COACH system by only single exposure point spread hologram. This proposal is expected to provide great potential in synthetic aperture imaging and other fields of that based on I-COACH system.

show abstract

Section: Introductionmentioning

confidence: 99%

Annular multi-focal-phase mask multiplexing based large depth of field imaging by interferenceless coded aperture correlation holography

Liu

Wan

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…However, these and other linear filters do not necessarily yield the best recovered image in the sense of the minimum cost function. In previous studies, the cost functions were entropy [14,15], no-reference structural sharpness [21] and signal-to-noise ratio [22].…”

Section: Introductionmentioning

confidence: 99%

Incoherent nonlinear deconvolution using an iterative algorithm for recovering limited-support images from blurred digital photographs

Rosen,

Anand

2023

Preprint

View full text Add to dashboard Cite

Recovering original images from blurred images is a challenging task. We propose a new deconvolution method termed incoherent nonlinear deconvolution using an iterative algorithm (INDIA). Two inputs are introduced into the algorithm: one is a random or engineered point spread function of the scattering system, and the other is a blurred or distorted image of some object outputted from this system. The two functions are Fourier transformed, and their phase distributions are processed independently of their magnitude. The algorithm yields the image of the original object with reduced blurring effects. The results of the new method are compared to two linear and two nonlinear algorithms under various types of blurs. The root mean square error and structural similarity between the original and recovered images are chosen as the comparison criteria between the five different algorithms. The simulation and experimental results confirm the superior performance of INDIA compared to the other tested deblurring methods.

show abstract

“…Let us ask this fundamental question -why is scattering based coded apertures preferred for 3D imaging? The reason is that the average speckle size formed by scattering is approximately the diffraction limited spot size 16 . Consequently, the autocorrelation function is sharp and about twice that of the size of the focal spot that can be obtained with a lens of the same NA 1 .…”

Section: Introductionmentioning

confidence: 99%

Single-shot mid-infrared incoherent holography using Lucy-Richardson-Rosen algorithm

Anand¹,

Han²,

Maksimovic³

et al. 2022

OES

View full text Add to dashboard Cite

In recent years, there has been a significant transformation in the field of incoherent imaging with new possibilities of compressing three-dimensional (3D) information into a two-dimensional intensity distribution without two-beam interference (TBI). Most of the incoherent 3D imagers without TBI are based on scattering by a random phase mask exhibiting sharp autocorrelation and low cross-correlation along the depth. Consequently, during reconstruction, high lateral and axial resolutions are obtained. Imaging based on scattering requires an astronomical photon budget and is therefore precluded in many power-sensitive applications. In this study, a proof-of-concept 3D imaging method without TBI using deterministic fields has been demonstrated. A new reconstruction method called the Lucy-Richardson-Rosen algorithm has been developed for this imaging concept. We believe that the proposed approach will cause a paradigm-shift in the current state-of-the-art incoherent imaging, fluorescence microscopy, mid-infrared fingerprinting, astronomical imaging, and fast object recognition applications.

show abstract

Resolution-enhanced imaging using interferenceless coded aperture correlation holography with sparse point response

Cited by 19 publications

References 28 publications

Annular multi-focal-phase mask multiplexing based large depth of field imaging by interferenceless coded aperture correlation holography

Annular multi-focal-phase mask multiplexing based large depth of field imaging by interferenceless coded aperture correlation holography

Incoherent nonlinear deconvolution using an iterative algorithm for recovering limited-support images from blurred digital photographs

Single-shot mid-infrared incoherent holography using Lucy-Richardson-Rosen algorithm

Contact Info

Product

Resources

About