Results 11 to 20 of about 32,464,068 (395)
Applying systems-level spectral imaging and analysis to reveal the organelle interactome
Nature, 2017 The organization of the eukaryotic cell into discrete membrane-bound organelles allows for the separation of incompatible biochemical processes, but the activities of these organelles must be coordinated.
A. Valm +9 more
semanticscholar +3 more sources
Novel 3D Imaging Systems for High-Throughput Phenotyping of Plants
Remote Sensing, 2021 The use of 3D plant models for high-throughput phenotyping is increasingly becoming a preferred method for many plant science researchers. Numerous camera-based imaging systems and reconstruction algorithms have been developed for the 3D reconstruction ...
Tian Gao +9 more
semanticscholar +1 more source
An optic to replace space and its application towards ultra-thin imaging systems [PDF]
Nature Communications, 2020 Centuries of effort to improve imaging has focused on perfecting and combining lenses to obtain better optical performance and new functionalities. The arrival of nanotechnology has brought to this effort engineered surfaces called metalenses, which ...
O. Reshef +6 more
semanticscholar +1 more source
Comparison of RetCam and Smartphone-Based Photography for Retinopathy of Prematurity Screening
Diagnostics, 2022 This study aimed to compare the clinical performance between a smartphone-based fundus photography device and a contact imaging device for retinopathy of prematurity (ROP) screening. All patients were first examined with binocular indirect ophthalmoscopy
Jui-Yen Lin +7 more
doaj +1 more source
Freeform imaging systems: Fermat’s principle unlocks “first time right” design [PDF]
Light: Science & Applications, 2020 For more than 150 years, scientists have advanced aberration theory to describe, analyze and eliminate imperfections that disturb the imaging quality of optical components and systems.
F. Duerr, H. Thienpont
semanticscholar +1 more source
IEEE Photonics Journal, 2022 The intermediate angular-spectrum method is an efficient way to calculate computer-generated holograms without zero-padding and cropping operation. In this paper, we present an optimized iteration algorithm to improve the reconstruction quality in the ...
Dapu Pi, Juan Liu, Yongtian Wang
doaj +1 more source
IEEE Photonics Journal, 2021 The traditional head-up display (HUD) system has the disadvantages of a small area and a single display plane, here we propose and design an augmented reality (AR) HUD system with multi-plane, large area, high diffraction efficiency and a single picture ...
Zhenlv Lv, Juan Liu, Liangfa Xu
doaj +1 more source
Applied Sciences, 2020 We built a fiber-less prototype of an optical system with 156 channels each one consisting of an optode made of a silicon photomultiplier (SiPM) and a pair of light emitting diodes (LEDs) operating at 700 nm and 830 nm.
Giovanni Maira +6 more
doaj +1 more source
Simulation Analysis of a Wavefront Reconstruction of a Large Aperture Laser Beam
Sensors, 2023 In order to solve the problem of atmospheric influence on the far-field measurement of the quality of a laser beam, we proposed a direct wavefront measurement system based on the Hartmann detection principle, which can measure large apertures and high ...
Gangyu Wang +4 more
doaj +1 more source
Pattern Recognition Letters, 2020 Diabetic Retinopathy (DR) may result in various degrees of vision loss and even blindness if not diagnosed in a timely manner. Therefore, having an annual eye exam helps early detection to prevent vision loss in earlier stages, especially for diabetic ...
Recep E. Hacisoftaoglu +2 more
semanticscholar +1 more source