Results 21 to 30 of about 3,536,900 (328)

A ParaBoost Stereoscopic Image Quality Assessment (PBSIQA) System [PDF]

open access: yes, 2016
The problem of stereoscopic image quality assessment, which finds applications in 3D visual content delivery such as 3DTV, is investigated in this work.
Ko, Hyunsuk, Kuo, C. -C. Jay, Song, Rui
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

A reduced-reference perceptual image and video quality metric based on edge preservation [PDF]

open access: yes, 2012
In image and video compression and transmission, it is important to rely on an objective image/video quality metric which accurately represents the subjective quality of processed images and video sequences.
AL Yarbus   +27 more
core   +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

Quantifying image distortion based on Gabor filter bank and multiple regression analysis [PDF]

open access: yes, 2012
Image quality assessment is indispensable for image-based applications. The approaches towards image quality assessment fall into two main categories: subjective and objective methods. Subjective assessment has been widely used.
Castellanos Dominguez, German   +5 more
core   +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

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 Classified Image Analysis with Application to Face Detection and Recognition

open access: yes, 2018
Motion blur, out of focus, insufficient spatial resolution, lossy compression and many other factors can all cause an image to have poor quality. However, image quality is a largely ignored issue in traditional pattern recognition literature.
Qiu, Guoping   +3 more
core   +1 more source

Objective Evaluation Criteria for Shooting Quality of Stereo Cameras over Short Distance [PDF]

open access: yes, 2015
Stereo cameras are the basic tools used to obtain stereoscopic image pairs, which can lead to truly great image quality. However, some inappropriate shooting conditions may cause discomfort while viewing stereo images.
Jiachen Yang, Rongrong Chu, Yun Liu
core   +2 more sources

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

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