Measurement of image quality for large‐screen displays based on audience viewing: Overview of standardization and preliminary study on laser projection displays and LED displays

2021 ◽  
Author(s):  
Jianping Wang ◽  
Xi Mou ◽  
Chunao Wen
Keyword(s):  
Image Quality ◽  
Large Screen ◽  
Preliminary Study

Preliminary study of improved median filter using adaptively mask size in light microscopic image

Microscopy ◽  
2020 ◽  
Vol 69 (1) ◽  
pp. 31-36
Author(s):  
Ji-Youn Kim ◽  
Youngjin Lee
Keyword(s):  
Image Quality ◽  
Coefficient Of Variation ◽  
Signal To Noise Ratio ◽  
Median Filter ◽  
Microscopic Image ◽  
Signal To Noise ◽  
Mask Size ◽  
Preliminary Study ◽  
Noise Ratio ◽  
Image Details

Abstract This study aimed to develop and evaluate an improved median filter (IMF) with an adaptive mask size for light microscope (LM) images. We acquired images of the mouse first molar using a LM at 100× magnification. The images obtained using our proposed IMF were compared with those from a conventional median filter. Several parameters such as the contrast-to-noise ratio, coefficient of variation, no-reference assessments and peak signal-to-noise ratio were employed to evaluate the image quality quantitatively. The results demonstrated that the proposed IMF could effectively de-noise the LM images and preserve the image details, achieving a better performance than the conventional median filter.

Assessment of 3D-TOF-MRA at 3.0 tesla in the characterization of the angioarchitecture of cerebral arteriovenous malformations: a preliminary study

2007 ◽  
Vol 48 (6) ◽  
pp. 678-686 ◽  
Author(s):  
J. O. Heidenreich ◽  
A. M. Schilling ◽  
F. Unterharnscheidt ◽  
R. Stendel ◽  
S. Hartlieb ◽  
...  
Keyword(s):  
Image Quality ◽  
Gold Standard ◽  
Signal To Noise Ratio ◽  
Brain Arteriovenous Malformation ◽  
3.0 Tesla ◽  
Detection Rates ◽  
Tof Mra ◽  
Preliminary Study

Background: The characterization of brain arteriovenous malformation (AVM) angioarchitecture remains rewarding in planning and predicting therapy. The increased signal-to-noise ratio at higher field strength has been found advantageous in vascular brain pathologies. Purpose: To evaluate whether 3.0T time-of-flight (TOF) magnetic resonance angiography (MRA) is superior to 1.5T TOF-MRA for the characterization of cerebral AVMs. Material and Methods: Fifteen patients with AVM underwent TOF-MRA at 3.0T and 1.5T and catheter angiography (DSA), which was used as the gold standard. Blinded readers scored image quality on a four-point scale, nidus size, and number of feeding arteries and draining veins. Results: Image quality of TOF-MRA at 3.0T was superior to 1.5T but still inferior to DSA. Evaluation of nidus size was equally good at 3.0T and 1.5T for all AVMs. In small AVMs, however, there was a tendency of size overestimation at 3.0T. MRA at 3.0T had increased detection rates for feeding arteries (+21%) and superficial (+13%) and deep draining veins (+33%) over 1.5T MRA. Conclusion: 3.0T TOF-MRA offers superior characterization of AVM angioarchitecture compared with 1.5T TOF-MRA. The image quality of MRA at both 3.0 and 1.5T is still far from equal to DSA, which remains the gold standard for characterization of AVM.

Effect of low tube voltage and low iodine concentration abdominal CT on image quality and radiation dose in children: preliminary study

2019 ◽  
Vol 44 (5) ◽  
pp. 1928-1935 ◽  
Author(s):  
Sun Kyoung You ◽  
Young Hun Choi ◽  
Jung-Eun Cheon ◽  
Woo Sun Kim ◽  
In-One Kim ◽  
...  
Keyword(s):  
Image Quality ◽  
Radiation Dose ◽  
Iodine Concentration ◽  
Abdominal Ct ◽  
Tube Voltage ◽  
Low Tube Voltage ◽  
Preliminary Study

scholarly journals Influence of orthodontic brackets and permanent retainers on the diagnostic image quality of MRI scans: A preliminary study

2021 ◽  
Vol 58 (4) ◽  
pp. 0-0
Author(s):  
Praveen Kumar Neela ◽  
Venkat Kishan ◽  
Mohammed Wahajuddin Syed ◽  
Pavan Kumar Mamillapalli ◽  
Vasu Murthy Sesham ◽  
...  
Keyword(s):  
Image Quality ◽  
Orthodontic Brackets ◽  
Diagnostic Image Quality ◽  
Diagnostic Image ◽  
Mri Scans ◽  
Preliminary Study

Quantification of radiographic image quality based on patient anatomical contrast-to-noise ratio: a preliminary study with chest images

2010 ◽  
Author(s):  
Yuan Lin ◽  
Xiaohui Wang ◽  
William J. Sehnert ◽  
David H. Foos ◽  
Lori Barski ◽  
...  
Keyword(s):  
Image Quality ◽  
Radiographic Image ◽  
Preliminary Study ◽  
Noise Ratio

Image quality of digital chest radiography: evaluation of subtle interstitial lung abnormalities (preliminary study)

1994 ◽  
Vol 43 (1-2) ◽  
pp. 107-114 ◽  
Author(s):  
Junpei Ikezoe ◽  
Shoji Kido ◽  
Noriyuki Takeuchi ◽  
Hiroshi Kondoh ◽  
Jun Arisawa ◽  
...  
Keyword(s):  
Image Quality ◽  
Chest Radiography ◽  
Lung Abnormalities ◽  
Digital Chest ◽  
Preliminary Study

Image quality, radiation dose and diagnostic accuracy of 70 kVp whole brain volumetric CT perfusion imaging: a preliminary study

2016 ◽  
Vol 26 (11) ◽  
pp. 4184-4193 ◽  
Author(s):  
Xiao Kun Fang ◽  
Qian Qian Ni ◽  
U. Joseph Schoepf ◽  
Chang Sheng Zhou ◽  
Guo Zhong Chen ◽  
...  
Keyword(s):  
Image Quality ◽  
Radiation Dose ◽  
Diagnostic Accuracy ◽  
Perfusion Imaging ◽  
Ct Perfusion ◽  
Whole Brain ◽  
Ct Perfusion Imaging ◽  
Preliminary Study ◽  
Volumetric Ct
Sign in / Sign up

Export Citation Format

Share Document