Results 71 to 80 of about 4,867 (182)
Rotated Array Radar on Non-Dedicated Platforms: A Processing Method Under Rotation Velocity Errors
Remote SensingThis paper presents rotated array radar (RAR), a new paradigm that innovatively leverages non-dedicated rotating structures as carrier platforms. Motivated by aerodynamic-induced fluctuations and the practical lack of high-fidelity trajectory monitors on
Yubin Zhao +4 more
doaj +1 more source
Cross‐Scale Synergistic Optimization for Miniature Meta‐Liquid Hybrid Zoom Imaging
Nanophotonics, Volume 15, Issue 13, 13 July 2026.A physically constrained optimization framework links electrowetting liquid lenses and metasurface dispersion engineering to realize a compact visible‐band achromatic zoom imager. By co‐optimizing zoom actuation, meta‐atom manufacturability, and system aberrations, the design achieves 1.5x zoom in a 15.5 mm track and clarifies robustness against ...
Zhuoxuan Fan +10 more
wiley +1 more source
Modelling and Validation: AUTOFOCUS and Quest [PDF]
Formal Aspects of Computing, 2000 Abstract. We describe the graphical description techniques, their underlaying semantics and the validation techniques that have been applied to the FM99 example; furthermore we sketch the model and discuss the validation results we have obtained. A UTO F
openaire +1 more source
Closed-Loop Autofocus Scheme for Scanning Electron Microscope
MATEC Web of Conferences, 2015 In this paper, we present a full scale autofocus approach for scanning electron microscope (SEM). The optimal focus (in-focus) position of the microscope is achieved by maximizing the image sharpness using a vision-based closed-loop control scheme.
Cui Le +4 more
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Image Visual Quality: Sharpness Evaluation in the Logarithmic Image Processing Framework
Big Data and Cognitive ComputingIn image processing, the acquisition step plays a fundamental role because it determines image quality. The present paper focuses on the issue of blur and suggests ways of assessing contrast. The logic of this work consists in evaluating the sharpness of
Arnaud Pauwelyn +4 more
doaj +1 more source
A Robot-Assisted Cell Manipulation System with an Adaptive Visual Servoing Method
Micromachines, 2016 Robot-assisted cell manipulation is gaining attention for its ability in providing high throughput and high precision cell manipulation for the biological industry. This paper presents a visual servo microrobotic system for cell microinjection.
Yu Xie +5 more
doaj +1 more source
Determination of Cell Viability—Acridine Orange/Propidium Iodide (AO/PI) Staining Method
Cell Proliferation, Volume 59, Issue 8, August 2026.
Lei Wang +29 more
wiley +1 more source
Autofocusing Method Based on Dynamic Modulation Transfer Function Feedback
PhotonicsAccurate 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
Remote SensingSynthetic aperture radar (SAR) is an all-weather and all-day imaging technique for Earth observation. Achieving efficient observation, high resolution, and wide swath coverage have remained critical development goals in SAR technology, which inherently ...
Kaiwen Zhu +4 more
doaj +1 more source
Design and Experimental Validation of a Line-Laser Autofocusing System With Extended Working Range
IEEE Photonics JournalAutofocus (AF) technology plays a critical role in applications such as microscopic measurement, 3D visual scanning, and semiconductor defect inspection.
Xiaoxiao Wei +4 more
doaj +1 more source