A 4-Megapixel Cooled CCD Division of Focal Plane Polarimeter for Celestial Imaging

Marinov, Radoslav; Cui, Nan; Garcia, Missael; Powell, S.; Gruev, Viktor

doi:10.1109/jsen.2017.2679206

Cited by 11 publications

(3 citation statements)

References 31 publications

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“…The MPA-filtered CCD camera is a representative of passive-encoding approaches to single-shot coded-aperture polarization imaging [262]. In the system shown in figure 13(a), the MPA itself consists of repeated groups, each containing four pixelated linear polarization filters oriented at 0 • , 45 • , 90 • , and 135 • .…”

Section: The Micropolarizer Array (Mpa)-filtered Ccd Cameramentioning

confidence: 99%

Punching holes in light: recent progress in single-shot coded-aperture optical imaging

Liang

2020

Rep. Prog. Phys.

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Single-shot coded-aperture optical imaging physically captures a code-aperture-modulated optical signal in one exposure and then recovers the scene via computational image reconstruction. Recent years have witnessed dazzling advances in various modalities in this hybrid imaging scheme in concomitant technical improvement and widespread applications in physical, chemical and biological sciences. This review comprehensively surveys state-of-the-art single-shot coded-aperture optical imaging. Based on the detected photon tags, this field is divided into six categories: planar imaging, depth imaging, light-field imaging, temporal imaging, spectral imaging, and polarization imaging. In each category, we start with a general description of the available techniques and design principles, then provide two representative examples of active-encoding and passive-encoding approaches, with a particular emphasis on their methodology and applications as well as their advantages and challenges. Finally, we envision prospects for further technical advancement in this field.

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Section: The Micropolarizer Array (Mpa)-filtered Ccd Cameramentioning

confidence: 99%

Punching holes in light: recent progress in single-shot coded-aperture optical imaging

Liang

2020

Rep. Prog. Phys.

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“…Beam splitters were used since the 1950s in television cameras [24], which divide light beams into different fractions similar to prisms. Interferometer based techniques [36], filtered lenslet arrays [37], division of focal plane polarimeters [38], spectrometers [39], multi-view multi-spectral mirror systems [40], and tunable sensors [41] can be named, too. These methods are tied to specify problems and are used in few industrial and professional applications.…”

Section: Related Multi-spectral Imaging Techniquesmentioning

confidence: 99%

Camera Array for Multi-Spectral Imaging

Genser

Seiler

Kaup

2020

IEEE Trans. on Image Process.

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Recently, many new applications arose for multispectral and hyper-spectral imaging. Besides modern biometric systems for identity verification, also agricultural and medical applications came up, which measure the health condition of plants and humans. Despite the growing demand, the acquisition of multi-spectral data is up to the present complicated. Often, expensive, inflexible, or low resolution acquisition setups are only obtainable for specific professional applications. To overcome these limitations, a novel camera array for multi-spectral imaging is presented in this article for generating consistent multispectral videos. As differing spectral images are acquired at various viewpoints, a geometrically constrained multi-camera sensor layout is introduced, which enables the formulation of novel registration and reconstruction algorithms to globally set up robust models. On average, the novel acquisition approach achieves a gain of 2.5 dB PSNR compared to recently published multi-spectral filter array imaging systems. At the same time, the proposed acquisition system ensures not only a superior spatial, but also a high spectral, and temporal resolution, while filters are flexibly exchangeable by the user depending on the application. Moreover, depth information is generated, so that 3D imaging applications, e.g., for augmented or virtual reality, become possible. The proposed camera array for multi-spectral imaging can be set up using off-the-shelf hardware, which allows for a compact design and employment in, e.g., mobile devices or drones, while being cost-effective.

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“…In the last few decades, the study of polarization vision has proliferated over a wide range of multidisciplinary research and applications [69]. In remote sensing, polarization imaging is used for material detection, fingerprint identification, contrast enhancement in hazy conditions, single-snapshot shape reconstruction, and more [70][71][72][73][74]. In neuroethology and sensory ecology, polarimetry is used for a wide range of animal behavioral analyses in both laboratory and field settings [75,76].…”

Section: A Bioinspired Color-polarization Imaging Sensormentioning

confidence: 99%

Multichannel spectrometers in animals

2018

Self Cite

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Multispectral, hyperspectral, polarimetric, and other types of multichannel imaging spectrometers are coming into common use for a variety of applications, including remote sensing, material identification, forensics, and medical diagnosis. These instruments are often bulky and intolerant of field abuse, so designing compact, reliable, portable, and robust devices is a priority. In contrast to most engineering designs, animals have been building compact and robust multichannel imaging systems for millennia-their eyes. Biological sensors arise by evolution, of course, and are not designed 'for' a particular use; they exist because the creatures that were blessed with useful mutations were better able to survive and reproduce than their competitors. While this is an inefficient process for perfecting a sensor, it brings unexpected innovations and novel concepts into visual system design-concepts that may be useful in the inspiration of new engineered solutions to problematic challenges, like the ones mentioned above. Here, we review a diversity of multichannel visual systems from both vertebrate and invertebrate animals, considering the receptor molecules and cells, spectral sensitivity and its tuning, and some aspects of the higher-level processing systems used to shape spectral (and polarizational) channels in vision. The eyes of mantis shrimps are presented as potential models for biomimetic multichannel imaging systems. We end with a description of a bioinspired, newly developed multichannel spectral/polarimetric imaging system based on mantis shrimp vision that is highly adaptable to field application.

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A 4-Megapixel Cooled CCD Division of Focal Plane Polarimeter for Celestial Imaging

Cited by 11 publications

References 31 publications

Punching holes in light: recent progress in single-shot coded-aperture optical imaging

Punching holes in light: recent progress in single-shot coded-aperture optical imaging

Camera Array for Multi-Spectral Imaging

Multichannel spectrometers in animals

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