Results 31 to 40 of about 1,174,545 (317)

Image quality loss and compensation for visually impaired observers [PDF]

open access: yes, 2018
The measurement and modeling of image quality are aimed to assist the design and optimization of systems, typically built for ‘normal’ observer vision. But in reality image viewers rarely have perfect vision. There have been few attempts and no universal
Fry, E.   +7 more
core   +1 more source

Image Quality Evaluation in Lossy Compressed Images [PDF]

open access: yes, 2017
This research focuses on the quantification of image quality in lossy compressed images, exploring the impact of digital artefacts and scene characteristics upon image quality evaluation.
Allen, E.
core   +1 more source

Assessment of Image Quality and Lesion Detectability With Digital PET/CT System

open access: yesFrontiers in Medicine, 2021
Purpose: The aim of this study was to assess image quality and lesion detectability acquired with a digital Positron Emission Tomography/Computed Tomography (PET/CT) Siemens Biograph Vision 600 system.Material and Methods: Consecutive patients who ...
Olivier Delcroix   +19 more
doaj   +1 more source

Phantom Study on the Influence of CT Model and Tube Voltage on Image Quality

open access: yesCT Lilun yu yingyong yanjiu, 2022
Objective: To compare the image quality between two CT scanners under two different tube voltages using a dedicated phantom. Materials and Methods: Siemens SOMATOM Force CT and Phillips Spectral IQon CT were used for scanning and the dedicated Assurance ...
Shu FANG   +5 more
doaj   +1 more source

Adaptive color space model based on dominant colors for image and video compression performance improvement

open access: yesКомпьютерная оптика, 2021
This paper describes the use of some color spaces in JPEG image compression algorithm and their impact in terms of image quality and compression ratio, and then proposes adaptive color space models (ACSM) to improve the performance of lossy image ...
S. Madenda, A. Darmayantie
doaj   +1 more source

The effect of scene content on image quality [PDF]

open access: yes, 2014
Device-dependent metrics attempt to predict image quality from an ‘average signal’, usually embodied on test targets. Consequently, the metrics perform well on individual ‘average looking’ scenes and test targets, but provide lower correlation with ...
Oh, K.H.
core   +1 more source

Data Fusion of RGB and Depth Data with Image Enhancement

open access: yesJournal of Imaging
Since 3D sensors became popular, imaged depth data are easier to obtain in the consumer sector. In applications such as defect localization on industrial objects or mass/volume estimation, precise depth data is important and, thus, benefits from the ...
Lennard Wunsch   +4 more
doaj   +1 more source

Radiation Protection Evaluations Following the Installations of Two Cardiovascular Digital X-ray Fluoroscopy Systems

open access: yesApplied Sciences, 2021
Acceptance testing and commission are essential elements of the quality assurance program for imaging equipment. We present the results of a performance evaluation of Flat Panel-Based Cardiovascular Fluoroscopy X-ray Systems as a part of acceptance ...
Ibrahim I. Suliman   +2 more
doaj   +1 more source

Quality-Aware Unpaired Image-to-Image Translation [PDF]

open access: yesIEEE Transactions on Multimedia, 2019
Generative Adversarial Networks (GANs) have been widely used for the image-to-image translation task. While these models rely heavily on the labeled image pairs, recently some GAN variants have been proposed to tackle the unpaired image translation task.
Lei Chen 0051   +3 more
openaire   +2 more sources

Synthetic Training Data in AI-Driven Quality Inspection: The Significance of Camera, Lighting, and Noise Parameters

open access: yesSensors
Industrial-quality inspections, particularly those leveraging AI, require significant amounts of training data. In fields like injection molding, producing a multitude of defective parts for such data poses environmental and financial challenges ...
Dominik Schraml, Gunther Notni
doaj   +1 more source

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