Results 101 to 110 of about 47,690,023 (260)

Theoretical evaluation of MTF and charge collection efficiency in CCD and CMOS image sensor [PDF]

open access: yes, 2009
Classical models used to calculate the Modulation Transfer function (MTF) of a solid-state image sensor generally use a sinusoidal type of illumination.
Olivier Saint-Pé   +11 more
core   +1 more source

A Novel Multi-Image Encryption Scheme Using Generalized Rectangular Transform and Advanced 5-D Hyperchaotic Map

open access: yesIEEE Access
This paper presents GRTPHM (Generalized Rectangular Transform and Penta-Hyperchaotic Map), a novel multi-image encryption scheme that enhances security, efficiency, and versatility. The encryption process consists of two key phases: pixel permutation and
Yu-Chi Lan, Chung-Ming Wang
doaj   +1 more source

A Practical Noise2Noise Denoising Pipeline for High‐Throughput Raman Spectroscopy

open access: yesAdvanced Engineering Materials, EarlyView.
A lightweight and reproducible denoising pipeline for high‐throughput Raman spectroscopy is introduced, based on a 1D convolutional autoencoder trained with a Noise2Noise strategy. Using only repeated short‐exposure acquisitions, the method suppresses stochastic noise without reference spectra, enabling reliable spectral reconstruction while preserving
David Martin‐Calle   +5 more
wiley   +1 more source

High performances monolithic CMOS detectors for space applications [PDF]

open access: yes, 2001
During the last 10 years, research about CMOS image sensors (also called APS -Active Pixel Sensors) has been intensively carried out, in order to offer an alternative to CCDs as image sensors.
Franck Corbiere   +17 more
core   +1 more source

Adaptive Image Steganography Algorithm Based on Deep Reinforcement Learning [PDF]

open access: yesJisuanji gongcheng
This study proposes an Adaptive Image Steganography Algorithm based on Deep Reinforcement Learning (AISA-DRL) to realize a balance among lightweight steganography, optimal embedding positioning, and high hidden outputs. A lightweight secure steganography
Qing QIAN, Yong LONG, Zhongyuan JIANG, Chunhong DUAN, Hong WANG
doaj   +1 more source

Integration of OpenCV‐Based Microscopic Adhesive Volume Measurement Into a Pyiron Workflow for Automated Data Analysis

open access: yesAdvanced Engineering Materials, EarlyView.
Residual adhesive after electrode loading in adhesive‐assisted resistance spot welding is quantified through a traceable experimental‐to‐digital workflow. Chromatic confocal topography provides calibrated surface‐height data, while OpenCV detects the electrode imprint and integrates adhesive height into comparable volume metrics.
Sung‐Min Wi, Jiangdong Zhao
wiley   +1 more source

Pixel-based vs object-based remote sensing for linking land use change and land value zone

open access: yesResults in Earth Sciences
Land Value Zone (LVZ) is essential for spatial planning, taxation, and land management in Indonesia. However, identifying these zones still faces significant challenges, especially in linking land use change with land value.
Nuansa Safitri Adiningsih   +1 more
doaj   +1 more source

Model‐Guided Design of Paper Membrane Architectures for Controlled Flow and Enhanced Diagnostic Sensitivity

open access: yesAdvanced Engineering Materials, EarlyView.
Geometrical modifications on nitrocellulose membranes can result in observable differences in signal intensity relative to a reference membrane (top and bottom left). Using two reference experiments, we have developed a theoretical model that can reproduce the experimentally observed flow changes and provide information on membrane parameters, e.g ...
Maria Dimaki   +2 more
wiley   +1 more source

Copasetic analysis: a framework for the blind analysis of microarray imagery [PDF]

open access: yes, 2004
The official published version can be found at the link below.From its conception, bioinformatics has been a multidisciplinary field which blends domain expert knowledge with new and existing processing techniques, all of which are focused on a common ...
Liu, X, Wang, Z, Fraser, K, O'Neill, P
core   +1 more source

Controlling Grain Growth in Powder Bed Fusion of Yttria‐Stabilized Zirconia Using Femtosecond Lasers: Challenges and Methodological Insights

open access: yesAdvanced Engineering Materials, EarlyView.
Binder‐free laser powder bed fusion of 8YSZ with a femtosecond laser is used to map process windows linking scan strategy, heat accumulation, and grain growth. Time‐resolved thermography and simulations reveal thermal regimes that enable continuous, vitrified, and fine‐grained 8YSZ surface layers without absorptive additives and demonstrate ...
Markus Kühn   +5 more
wiley   +1 more source

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