Results 11 to 20 of about 406,491 (258)

Image Magnification Based on Bicubic Approximation with Edge as Constraint

open access: yesApplied Sciences, 2020
Image magnification can be reduced to construct an approximation surface with data points in the image while keeping image details and edge features. In this paper, a new image magnification method is proposed by constructing piecewise bicubic polynomial
Linlin Ji   +3 more
doaj   +1 more source

Modeling GPR Wave Propagation in Complex Underground Structures Using Conformal ADI-FDTD Algorithm

open access: yesApplied Sciences, 2022
Ground Penetrating Radar (GPR) is a shallow geophysical method for detecting and locating subsurface targets. The GPR image echo characteristics of complex underground structures can be obtained by carrying out GPR forward modeling research.
Yinping Li   +4 more
doaj   +1 more source

Expansion of the Nodal-Adjoint Method for Simple and Efficient Computation of the 2D Tomographic Imaging Jacobian Matrix

open access: yesSensors, 2021
This paper focuses on the construction of the Jacobian matrix required in tomographic reconstruction algorithms. In microwave tomography, computing the forward solutions during the iterative reconstruction process impacts the accuracy and computational ...
Samar Hosseinzadegan   +4 more
doaj   +1 more source

MULTIFOCAL IMAGES FUSION [PDF]

open access: yesActa Electrotechnica et Informatica, 2017
The paper deals with the issue of multifocal image fusion. Two techniques of the hierarchical image representation are analyzed herein. The first one is hierarchical decomposition based on the Laplacian pyramid and the second one is based on integer ...
Ondrej KOVÁČ, Iveta GLADIŠOVÁ
doaj   +1 more source

A comparison of the horizontal and vertical bitewing images in detecting approximal caries and interdental bone loss in posterior teeth: A diagnostic accuracy randomized cross over clinical trial

open access: yesJournal of Dental Sciences, 2023
Horizontal bitewing radiographs are widely and frequently used in dentistry and are very reliable in diagnosing proximal caries and interproximal alveolar bone level. However, it is challengeable in detecting interproximal root caries, horizontal and/or vertical alveolar bone loss, and furcation involvements.
Zuhair S. Natto   +2 more
openaire   +3 more sources

Polynomial edge reconstruction sensitivity, subpixel Sobel gradient kernel analysis

open access: yesEngineering Reports, 2020
In digital image processing the accuracy and precision of edge detectors within noisy temporal environments can be imperative. In this article, a report on the polynomial reconstruction of 22.5° Sobel kernels using additional points through imaging ...
Nicholas Wells, Chung W. See
doaj   +1 more source

AA-LMM: Robust Accuracy-Aware Linear Mixture Model for Remote Sensing Image Registration

open access: yesRemote Sensing, 2023
Remote sensing image registration has been widely applied in military and civilian fields, such as target recognition, visual navigation and change detection.
Jian Yang, Chen Li, Xuelong Li
doaj   +1 more source

Physics-Informed Generative Adversarial Network-Based Modeling and Simulation of Linear Electric Machines

open access: yesApplied Sciences, 2022
The demand for fast magnetic field approximation for the optimal design of electromagnetic devices is urgent nowadays. However, due to the lack of a publicly available dataset and the unclear definition of each parameter in the magnetic field dataset ...
Huihuan Wu   +3 more
doaj   +1 more source

The effects of noise reduction, sharpening, enhancement, and image magnification on diagnostic accuracy of a photostimulable phosphor system in the detection of non-cavitated approximal dental caries [PDF]

open access: yesImaging Science in Dentistry, 2015
Contrast, sharpness, enhancement, and density can be changed in digital systems. The important question is to what extent the changes in these variables affect the accuracy of caries detection.Forty eight extracted human posterior teeth with healthy or proximal caries surfaces were imaged using a photostimulable phosphor (PSP) sensor.
Kajan, Zahra Dalili   +3 more
openaire   +2 more sources

MRWM: A Multiple Residual Wasserstein Driven Model for Image Denoising

open access: yesIEEE Access, 2022
Residual histograms can provide valuable information for vision research. However, current image restoration methods have not fully exploited the potential of multiple residual histograms, especially their role as overall regularization constraints.
Rui-Qiang He, Wang-Sen Lan, Fang Liu
doaj   +1 more source

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