Geometric superresolution and field-of-view extension achieved using digital mirror devices

Zlotnik, Alex; Kapellner, Yuval; Afik, Zvika; Layani, Itshak; Zalevsky, Zeev

doi:10.1117/1.jmm.12.3.033001

Cited by 4 publications

(7 citation statements)

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“…[5] we have demonstrated the basic concept in the visible regime and now we present its adaptation to the near infrared (IR) spectral range. The experimental setup we constructed is seen in Fig.…”

Section: Extended Field Of View Infra-red Dlp Based Imagermentioning

confidence: 98%

“…[5] the usage of DMDs allows obtaining geometric resolution improvement and a significant enhancement of the field of view (FOV). The idea behind the above-mentioned imaging features is to use the DMDs to properly encode the spatial frequency domain such that the multiplexed information of the imaged object can later on be separated and reconstructed.…”

Section: Extended Field Of View Infra-red Dlp Based Imagermentioning

confidence: 99%

“…Digital mirror devices (DMD) based optical configuration have a constantly increasing role in realization of integrated and high performance optical modules for optical scatter imaging [1], illumination purposes [2], fluorescent microscopy [3] and for super resolution and field of view extension [4,5]. On the other hand there are many techniques and applications for multiple pinhole coded aperture systems as well many designs of multi apertures cameras that have been investigated and implemented using computational approaches [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

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Computational imaging expansion from visible to infrared and to THz systems

et al. 2016

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Section: Extended Field Of View Infra-red Dlp Based Imagermentioning

confidence: 98%

Section: Extended Field Of View Infra-red Dlp Based Imagermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Computational imaging expansion from visible to infrared and to THz systems

et al. 2016

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“…Precise modulations can be introduced in the form of exact sub-pixel translations using a motorized stage [4], patterned illumination [5], a sequence of controlled point spread functions [6], placing a coded mask in the aperture [7], random lenses [8], and many other techniques. Introducing a highresolution occlusive programmable mask somewhere into the arXiv:1810.08855v1 [eess.IV] 20 Oct 2018 optical pathway is a simple way of introducing high-resolution variability, and eliminates the need for fine mechanical movements.…”

Section: A Superresolutionmentioning

confidence: 99%

“…Zlotnik et al used a combination of two digital micromirror devices (DMDs) in the aperture and intermediate image planes to realize a random operator for compressive sensing, where a DMD in the aperture was used to generate random point spread functions and a DMD in an intermediate image plane was used for pointwise coding [6]. This work addressed the possibility of pointwise modulating the scene with a DMD, but relied on fine mechanical positioning of the DMD relative to the sensor or a second DMD in the aperture to obtain high-resolution information.…”

Section: B Related Workmentioning

confidence: 99%

A Hardware Realization of Superresolution Combining Random Coding and Blurring

Beale

Chen

Giljum

et al. 2019

IEEE Trans. Comput. Imaging

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Resolution enhancements are often desired in imaging applications where high-resolution sensor arrays are difficult to obtain. Many computational imaging methods have been proposed to encode high-resolution scene information on lowresolution sensors by cleverly modulating light from the scene before it hits the sensor. These methods often require movement of some portion of the imaging apparatus or only acquire images up to the resolution of a modulating element. Here a technique is presented for resolving beyond the resolutions of both a pointwise-modulating mask element and a sensor array through the introduction of a controlled blur into the optical pathway. The analysis contains an intuitive and exact expression for the overall superresolvability of the system, and arguments are presented to explain how the combination of random coding and blurring makes the superresolution problem well-posed. Experimental results demonstrate that a resolution enhancement of approximately 4× is possible in practice using standard optical components, without mechanical motion of the imaging apparatus, and without any a priori assumptions on scene structure.

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Spatial super-resolution of colored images by micro mirrors

Dahan

Yaacobi

Pinsky

et al. 2018

J. Opt.

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In this paper, we present two methods of dealing with the geometric resolution limit of color imaging sensors. It is possible to overcome the pixel size limit by adding a digital micro-mirror device component on the intermediate image plane of an optical system, and adapting its pattern in a computerized manner before sampling each frame. The full RGB image can be reconstructed from the Bayer camera by building a dedicated optical design, or by adjusting the demosaicing process to the special format of the enhanced image.

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Geometric superresolution and field-of-view extension achieved using digital mirror devices

Cited by 4 publications

References 0 publications

Computational imaging expansion from visible to infrared and to THz systems

Computational imaging expansion from visible to infrared and to THz systems

A Hardware Realization of Superresolution Combining Random Coding and Blurring

Spatial super-resolution of colored images by micro mirrors

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