Results 21 to 30 of about 967,991 (168)
Validation of the influence of CT slice thickness on the quantitative accuracy and image quality of single photon emission computed tomography [PDF]
Asia Oceania Journal of Nuclear Medicine and Biology, 2021 Objective(s): Computed tomography (CT) images are used for precise anatomical location of lesions and for accurate attenuation correction in single-photon emission computed tomography (SPECT) image reconstruction in SPECT/CT examination.
Tomohiro Sato, Takashi Takagi
doaj +1 more source
A more effective CT synthesizer using transformers for cone-beam CT-guided adaptive radiotherapy
Frontiers in Oncology, 2022 PurposeThe challenge of cone-beam computed tomography (CBCT) is its low image quality, which limits its application for adaptive radiotherapy (ART). Despite recent substantial improvement in CBCT imaging using the deep learning method, the image quality ...
Xinyuan Chen +10 more
doaj +1 more source
Assessment of Image Quality and Lesion Detectability With Digital PET/CT System
Frontiers 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
Journal of Electronic Imaging, 2019 We have collected a large dataset of subjective image quality “*nesses,” such as sharpness or colorfulness. The dataset comes from seven studies and contains 39,415 quotations from 146 observers who have evaluated 62 scenes either in print images or on display.
Toni Virtanen +2 more
openaire +2 more sources
Phantom Study on the Influence of CT Model and Tube Voltage on Image Quality
CT 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
Boosting in image quality assessment [PDF]
2016 IEEE 18th International Workshop on Multimedia Signal Processing (MMSP), 2016 In this paper, we analyze the effect of boosting in image quality assessment through multi-method fusion. Existing multi-method studies focus on proposing a single quality estimator. On the contrary, we investigate the generalizability of multi-method fusion as a framework.
Dogancan Temel, Ghassan AlRegib
openaire +2 more sources
Компьютерная 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
Data Fusion of RGB and Depth Data with Image Enhancement
Journal of ImagingSince 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
Applied 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
SensorsIndustrial-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