Results 171 to 180 of about 2,832 (214)
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VIS-SWIR wideband lens-free imaging
Optics and Biophotonics in Low-Resource Settings VII, 2021Lens-free imaging (LFI) has become an important microscopy tool in many life science and industrial applications. Due to the absence of optical lenses (such as objectives) and accompanying lens aberrations (such as chromatic aberrations), the LFI modality is well suited for optical inspection of microscopic objects in a wide spectral range.
Ziduo Lin +8 more
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Extended SWIR imaging for targeting and reconnaissance
Infrared Technology and Applications XLIV, 2018In the recent years AIM has developed IR modules for imaging applications sensitive in the extended SWIR (eSWIR) spectral range with a cut-off wavelength of 2.5μm. The modules are based on AIM’s state-of-the-art MCT FPA technology with a dedicated ROIC integrated in a low size, weight and power (SWaP) Dewar/Cooler configuration.
Alexander Sieck +7 more
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Extended SWIR imaging sensors for hyperspectral imaging applications
SPIE Proceedings, 2016AIM has developed SWIR modules including FPAs based on liquid phase epitaxy (LPE) grown MCT usable in a wide range of hyperspectral imaging applications. Silicon read-out integrated circuits (ROIC) provide various integration and readout modes including specific functions for spectral imaging applications.
A. Weber +6 more
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Multimodal Image Registration between SWIR and LWIR Images in an Embedded System
2018 21st Euromicro Conference on Digital System Design (DSD), 2018We present an algorithm for multimodal registration between short-wave and long-wave infrared images. We use a histogram of oriented gradients to extract features in each image, the Chi-square distance to match the features, a projective transformation to map the objective image onto the reference system, and bilinear interpolation to obtain the pixel ...
Javier Cardenas, Miguel E. Figueroa
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NIR/SWIR imaging spectrometer for light satellites
SPIE Proceedings, 1994There has been long-standing interest in satellite-borne imaging IR sensors for a variety of applications in the commercial, environmental, and defense sectors. Recent availability of high quality, low-cost IR focal plane arrays and high-speed processing hardware has lead to the development of several optically-filtered radiometric imaging sensor ...
Anthony J. Ratkowski +2 more
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Image change detection using a SWIR active imaging system
SPIE Proceedings, 2013We are currently developing a system consisting of a GPS receiver, a three-axis magnetic compass as well as a digital video camera in order to visualize changes occuring along a regularily used itinerary. This is done by comparing actual images with images from the same scene, which have been acquired during a previous measurement.
Armin L. Schneider +3 more
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Microplastics characterization by hyperspectral imaging in the SWIR range
SPIE Future Sensing Technologies, 2019The aim of this study is to develop a new methodology based on optical sensors able to recognize and characterize microplastics collected in the marine environment. In recent years, this pollution represents an environmental emergency with serious effects on human health and marine organisms.
Serranti S. +5 more
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Logistic splicing correction for VNIR–SWIR reflectance imaging spectroscopy
Optics Letters, 2023In the field of spectroscopy, a splicing correction is a process by which two spectra captured with different sensors in adjacent or overlapping electromagnetic spectrum ranges are smoothly connected. In our study, we extend this concept to the case of reflectance imaging spectroscopy in the visible–near-infrared (VNIR) and short-wave infrared (SWIR ...
Federico Grillini +2 more
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Development of SWIR Clinical Imaging and Spectroscopic Instruments
ECS Meeting Abstracts, 2023The last decade saw a tremendous evolution of nanocarbon-based biosensors. Most often based on SWIR, or NIR-II (1 - 1.7µm) fluorescence, these novel technologies prompted the development of new imaging and spectroscopic instruments. As these nanosensors are moving from basic and preclinical research to medical and veterinary applications, the ...
Sebastien Blais-Ouellette +3 more
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SWIR variable dispersion spectral imaging sensor
SPIE Proceedings, 2007A novel spectral imaging sensor based on dual direct vision prisms is described. The prisms project a spectral image onto the focal plane array of an infrared camera. The prism set is rotated on the camera axis and the resulting spectral information is extracted as an image cube (x, y, λ), using tomographic techniques.
F. D. Shepherd +10 more
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