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Lensless Imaging With Compressive Ultrafast Sensing [PDF]
IEEE Transactions on Computational Imaging, 2017 Lensless imaging is an important and challenging problem. One notable solution to lensless imaging is a single pixel camera which benefits from ideas central to compressive sampling. However, traditional single pixel cameras require many illumination patterns which result in a long acquisition process.
Matthew Tancik, Guy Satat
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Noise Analysis for Lensless Compressive Imaging [PDF]
Signal Processing: Image Communication, 2015 We analyze the signal to noise ratio (SNR) in a recently proposed lensless compressive imaging architecture. The architecture consists of a sensor of a single detector element and an aperture assembly of an array of aperture elements, each of which has a programmable transmittance.
Hong Jiang
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Lensless X-Ray Imaging in Reflection Geometry [PDF]
Nature Photonics, 2011 Lensless X-ray imaging techniques such as coherent diffraction imaging and ptychography, and Fourier transform holography can provide time-resolved, diffraction-limited images. Nearly all examples of these techniques have focused on transmission geometry,
Joshua J. Turner +2 more
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Annual Review of Biomedical Engineering, 2016
High-resolution optical microscopy has traditionally relied on high-magnification and high–numerical aperture objective lenses. In contrast, lensless microscopy can provide high-resolution images without the use of any focusing lenses, offering the advantages of a large field of view, high resolution, cost-effectiveness, portability, and depth-resolved
Aydogan, Ozcan, Euan, McLeod
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High-resolution optical microscopy has traditionally relied on high-magnification and high–numerical aperture objective lenses. In contrast, lensless microscopy can provide high-resolution images without the use of any focusing lenses, offering the advantages of a large field of view, high resolution, cost-effectiveness, portability, and depth-resolved
Aydogan, Ozcan, Euan, McLeod
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Lensless Imaging: A computational renaissance
IEEE Signal Processing Magazine, 2016The basic design of a camera has remained unchanged for centuries. To acquire an image, light from the scene under view is focused onto a photosensitive surface using a lens. Over the years, the photosensitive surface has evolved from a photographic film to an array of digital sensors.
Vivek Boominathan +7 more
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Coherent Lensless X-Ray Imaging [PDF]
Nature Photonics, 2010 Very high resolution X-ray imaging has been the subject of considerable research over the past few decades. However, the spatial resolution of these methods is limited by the manufacturing quality of the X-ray optics. More recently, lensless X-ray imaging has emerged as a powerful approach that is able to circumvent this limitation. A number of classes
Keith Nugent, Chapman Henry
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Lensless ghost imaging with sunlight
Optics Letters, 2014An experiment demonstrating lensless ghost imaging (GI) with sunlight has been performed. A narrow spectral line is first filtered out and its intensity correlation measured. With this true thermal light source, an object consisting of two holes is imaged.
Xue-Feng, Liu +5 more
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Depth-resolved Lensless Imaging
Imaging and Applied Optics 2018 (3D, AO, AIO, COSI, DH, IS, LACSEA, LS&C, MATH, pcAOP), 2018A numerical approach is developed to reconstruct 3D images from a set of wavelengthand phase-resolved diffraction patterns, resulting in a computational depth-resolved imaging method.
Du, M., Eikema, K. S.E., Witte, S.
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Lensless single-fiber ghost imaging
Applied Optics, 2023We demonstrate lensless single-fiber ghost imaging, which allows illumination and collection using a single optical fiber without a transmission-type system. Speckle patterns with relative coincidence degrees of 0.14 were formed by image reconstruction using improved differential ghost imaging.
Toshitaka Wakayama +4 more
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Optik, 2013 Lensless ghost imaging with thermal light through turbulent atmosphere is investigated. Based on the extended Huygens-Fresnel integral and the classical optical coherence theory, we derive the expressions for the visibility and signal-to-noise ratio (SNR)
Wan, Ren-Gang +3 more
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