Results 91 to 100 of about 2,554 (206)

Micro Biomimetic Eyeball for Humanoid Robots: A Visual System with High‐Density Functional Integration Based on an Origami Mechanism

open access: yesAdvanced Science, Volume 13, Issue 1, 5 January 2026.
A biomimetic eyeball system (BES) based on a 3‐DOF miniature origami mechanism, which addresses the inherent issues of large size and weight in traditional electromechanical BESs is presented. Moreover, it maintains a level of visual functionality comparable to that of the human eye, including capabilities such as rapid scanning, target recognition ...
Junji Pu   +6 more
wiley   +1 more source

Autofocusing method for through-the-wall bioradar imagery of human vital signs

open access: yesThe Journal of Engineering, 2019
In through-the-wall human imaging, ambiguities in wall parameters will cause image blurred and deteriorate signal-to-clutter ratio of vital signs. Autofocusing method is a kind of method to get focusing image without any information of wall.
Fulai Liang   +4 more
doaj   +1 more source

HOS based algorithm for autofocusing of spotlight SAR images

open access: yes, 1997
The authors propose a novel SAR (synthetic aperture radar) image autofocusing technique based on higher order statistics (HOS) analysis. The SAR imaging system has been modelled as a bandlimited complex linear time invariant (LTI) filter, so the ...
CORSINI, GIOVANNI   +5 more
core   +1 more source

Propagation dynamics of abruptly autofocusing circular Airy-Gaussian vortex beams in the fractional Schr\"odinger equation

open access: yes, 2020
We introduce axisymmetric Airy-Gaussian vortex beams in a model of an optical system based on the (2+1)-dimensional fractional Schr\"odinger equation, characterized by its L\'evy index (LI).
Yingji He (5787485)   +6 more
core   +1 more source

Single-shot autofocusing of microscopy images using deep learning

open access: yes, 2020
We demonstrate a deep learning-based offline autofocusing method, termed Deep-R, that is trained to rapidly and blindly autofocus a single-shot microscopy image of a specimen that is acquired at an arbitrary out-of-focus plane. We illustrate the efficacy
Yilin Luo (7849877)   +3 more
core   +1 more source

Abstracts

open access: yesMolecular Oncology, Volume 20, Issue S1, Page 1-692, August 2026.
Abstracts submitted to the ‘EACR 2026 Congress: Innovative Cancer Science’, from 08–11 June 2026 and accepted by the Congress Organising Committee are published in this Supplement of Molecular Oncology, an affiliated journal of the European Association for Cancer Research (EACR).
wiley   +1 more source

Visualization 1: Compact multi-band fluorescent microscope with an electrically tunable lens for autofocusing

open access: yes, 2017
Main interface of the autofocusing software Originally published in Biomedical Optics Express on 01 November 2015 (boe-6-11 ...
Baoli Yao (386384)   +8 more
core   +1 more source

Autofocusing and resolution enhancement in digital holographic microscopy by using speckle-illumination

open access: yes, 2015
Sequential speckle illumination has been incorporated into digital holographic microscopy (DHM) for autofocusing and resolution enhancement. For autofocusing, the image plane is numerically determined by searching for the minimal deviation among the ...
Pedrini, Giancarlo   +4 more
core   +1 more source

Caustic Interpretation of the Abruptly Autofocusing Vortex beams

open access: yes, 2021
International audienceWe propose an effective scheme to interpret the abruptly autofocusing vortex beam. In our scheme, a set of analytical formulae are deduced to well predict not only the global caustic, before and after the focal plane, but also the ...
Giust, Remo   +6 more
core   +1 more source

Autofocusing Method Based on Dynamic Modulation Transfer Function Feedback

open access: yesPhotonics
Accurate measurement of key optical system parameters (such as focal length, distortion, and modulation transfer function (MTF)) depends critically on obtaining sharp images.
Zhijing Fang   +5 more
doaj   +1 more source

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