Results 21 to 30 of about 3,002 (158)
Lensless Imaging with a Controllable Aperture [PDF]
2006 IEEE Computer Society Conference on Computer Vision and Pattern Recognition - Volume 1 (CVPR'06), 2006 In this paper we propose a novel, highly flexible camera. The camera consists of an image detector and a special aperture, but no lens. The aperture is a set of parallel light attenuating layers whose transmittances are controllable in space and time. By applying different transmittance patterns to this aperture, it is possible to modulate the incoming
Assaf Zomet, Shree K. Nayar
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Speckle-Correlation Scattering Matrix Approaches for Imaging and Sensing through Turbidity
Sensors, 2020 The development of optical and computational techniques has enabled imaging without the need for traditional optical imaging systems. Modern lensless imaging techniques overcome several restrictions imposed by lenses, while preserving or even surpassing ...
YoonSeok Baek +3 more
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Fabrication of Integrated Lensless Cameras via UV-Imprint Lithography
IEEE Photonics Journal, 2022 We report on the construction of a lensless camera with a phase-modulating mask layer integrated directly on an image sensor using the UV-imprint lithography method.
Yujin Lee +6 more
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Optics Express, 2017 Lensless quantitative phase imaging is of high interest for obtaining a large field of view (FOV), typically the size of the camera chip, to observe biological cell material with high contrast. It has the potential to be widely spread due to its inherent simplicity. However, the tradeoff is the added complexity due to the illumination.
Rostykus, Manon +3 more
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Lensless white light interferometry based on digital holography using supercontinuum lasers [PDF]
EPJ Web of ConferencesThis work presents a novel method for lensless white light interferometry (WLI) based on digital holography. The lensless design enables compact, lightweight measurement systems that require fewer individual images, thereby significantly reducing ...
Bich Justin A. +2 more
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Robust and Compact Digital Lensless Holographic Microscope for Label-Free Blood Smear Imaging
, 2023 Robust open-source digital lensless holographic microscope, functionalized for the label-free analysis of blood smear ...
Carlos Buitrago-Duque +2 more
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LenslessPiCam: A Hardware and Software Platform for Lensless Computational Imaging with a Raspberry Pi [PDF]
This toolkit has everything you need to perform imaging with a lensless camera. We make use of a low-cost implementation of DiffuserCam, namely replacing the lens with a piece of tape and using the Raspberry Pi HQ camera sensor.
Simeoni, Matthieu +3 more
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A Simple Framework for 3D Lensless Imaging with Programmable Masks [PDF]
, 2021 Lensless cameras provide a framework to build thin imaging systems by replacing the lens in a conventional camera with an amplitude or phase mask near the sensor. Existing methods for lensless imaging can recover the depth and intensity of the scene, but
Zheng, Yucheng +3 more
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THz coherent lensless imaging [PDF]
Applied Optics, 2019 Imaging with THz radiation has proved an important tool for both fundamental science and industrial use. Here we review a class of THz imaging implementations, named coherent lensless imaging, that reconstruct the coherent response of arbitrary samples with a minimized experimental setup based only on a coherent source and a camera.
Lorenzo Valzania +6 more
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