Results 101 to 110 of about 2,554 (206)

CONTENT-BASED AUTOFOCUSING IN AUTOMATED MICROSCOPY

open access: yesImage Analysis & Stereology, 2010
Autofocusing is the fundamental step when it comes to image acquisition and analysis with automated microscopy devices. Despite all efforts that have been put into developing a reliable autofocus system, recent methods still lack robustness towards different microscope modes and distracting artefacts.
Englmeier, Karl-Hans   +2 more
openaire   +4 more sources

A Novel Deep Unfolding Network for Multi-Band SAR Sparse Imaging and Autofocusing

open access: yesRemote Sensing
The sparse imaging network of synthetic aperture radar (SAR) is usually designed end to end and has a limited adaptability to radar systems of different bands.
Xiaopeng Li   +5 more
doaj   +1 more source

Wavelet Transform for Autofocusing Detection Systems

open access: yes, 2000
Use of wavelet transform for a new autofocusing mechanism is proposed. In comparison with autofocus mechanisms of commercially available camera systems, our proposed method is more accurate. In conjunction with a use of charge-coupled device image sensor,
Joewono Widjaja
core  

Autofocusing with the help of orthogonal series transforms

open access: yes, 2010
Autofocusing with the help of orthogonal series transformsAn autofocus algorithm employing orthogonal series expansions is proposed. Several instances of the generic algorithm, based on discrete trigonometric, polynomial and wavelet series, are reviewed.
Przemysław Śliwiński
core   +1 more source

Abstract PRACTICAL ISSUES IN PIXEL-BASED AUTOFOCUSING FOR MACHINE VISION

open access: yes, 2008
Different autofocusing methods exist for many cameras today. While not ignoring commercially available methods requiring specialized hardware, this paper focuses mainly on pixel based autofocusing algorithms as applied to CCD camera systems.
H. Ang   +3 more
core  

Focal plane detection via holographic autofocusing criterion applied on Terahertz TDS system

open access: yes, 2018
Holographic autofocusing technique is applied on a terahertz time-domain spectroscopy system to improve focus accuracy. We experimentally perform the focus plane detection with TDS measurement. Amplitude and phase information at different wavelengths are
Nguyen, D. T.   +7 more
core   +1 more source

Autofocusing-based visual servoing : application to MEMS micromanipulation.

open access: yes, 2010
International audienceIn MEMS microassembly areas, different methods of automatic focusing are presented in the literature. All these methods have a common point.
Dembélé, Sounkalo   +5 more
core   +1 more source

Image contrast and entropy based autofocusing for polarimetric ISAR

open access: yes, 2007
In recent studies the possibility of extending autofocusing techniques to fully polarimetric ISAR systems has been proposed. The image contrast and entropy based autofocusing techniques have been proposed in the last decade as some of the most common ...
Berizzi, F.   +18 more
core   +1 more source

An Enhanced Phase Gradient Autofocus Algorithm for SAR: A Fractional Fourier Transform Approach

open access: yesRemote Sensing
Synthetic aperture radar (SAR) technology is one of the imaging radar technologies receiving the most attention worldwide. The main purpose is to detect targets in the area of interest in different settings, such as day/night, various weather conditions,
Kanghyuk Seo, Yonghwi Kwon, Chul Ki Kim
doaj   +1 more source

Digital holography with advanced autofocusing and reconstruction algorithms

open access: yes, 2018
Digital holography (DH) is a rapidly developing field that has drawn tremendous attention from both research and commercial points of view. It can optically record a three-dimensional (3D) scene as a 2D digital hologram, and reconstruct the object with ...
Ren, Zhenbo, 任振波
core   +1 more source

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