Results 91 to 100 of about 3,002 (158)
Lensless hypercentric imaging using digital holography
Journal of the European Optical Society-Rapid PublicationsHypercentric imaging is a powerful imaging modality that allows for the inspection of a specimen and its sides in the same recording. Typically, hypercentric imaging involves special lens objectives, which are bulky and limit the use of interferometric ...
Falldorf Claas +2 more
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Optical Lensless-Camera Communications Aided by Neural Network
Applied Sciences, 2019 Currently, the optical components of a camera embedded in the device constrain its overall thickness. Moreover, if the camera is strongly shaken, the lens and sensor may be misaligned, resulting in a defocusing effect.
Suhua Zhong +5 more
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Extended Field of View and Resolution Enhancement in Lensless Digital Holography
SensorsLensless digital holography provides a simple, low-cost imaging platform with a large field of view (FOV) and quantitative phase capability, making it attractive for biomedical imaging, microstructure inspection, and large area imaging.
Chung-Hsuan Huang +4 more
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PhotonicsWe investigate a lensless Airy-type optical beam generated by direct Fresnel propagation of a Gaussian apodized real space cubic phase. Starting from the scalar Fresnel diffraction integral, we derive a closed-form expression showing that the propagated ...
Justas Berškys +2 more
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Learning-based techniques for lensless reconstruction [PDF]
In this internship, I explore different optimization algorithms for lensless imaging. Lensless imaging is a new imaging technique that replaces the lens of a camera with a diffuser mask. This allows for simpler and cheaper camera hardware.
Perron, Yohann
core
Invited Article: Mask-modulated lensless imaging with multi-angle illuminations
APL Photonics, 2018 The use of multiple diverse measurements can make lensless phase retrieval more robust. Conventional diversity functions include aperture diversity, wavelength diversity, translational diversity, and defocus diversity.
Zibang Zhang +8 more
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Artificial Neural Networks for Automated Cell Quantification in Lensless LED Imaging Systems
Proceedings, 2018 Cell registration by artificial neural networks (ANNs) in combination with principal component analysis (PCA) has been demonstrated for cell images acquired by light emitting diode (LED)-based compact holographic microscopy.
Agus Budi Dharmawan +10 more
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Photonics Breakthroughs 2025: Programmable Lensless Imaging With a Fresnel Zone Aperture
IEEE Photonics JournalOptical imaging has long been dominated by conventional lens-based systems, which, despite their success, remain constrained by size, weight, and cost.
Bowen Wang +5 more
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Label-Free Phenotyping of Cell Death with an In-Incubator Lensless Quantitative Phase Microscope [PDF]
EPJ Web of ConferencesWe present a compact lensless quantitative phase microscope enabling label-free time-lapse imaging of living cells in incubators, reconstructing dry-mass dynamics and morphology to distinguish apoptosis from necrosis for drug testing, toxicity screening ...
Shevkunov Igor +2 more
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Guided Lensless Polarization Imaging
CoRRPolarization imaging captures the polarization state of light, revealing information invisible to the human eye yet valuable in domains such as biomedical diagnostics, autonomous driving, and remote sensing. However, conventional polarization cameras are often expensive, bulky, or both, limiting their practical use.
Noa Kraicer, Erez Yosef, Raja Giryes
openaire +2 more sources