Quantitative and qualitative image quality analysis of super resolution images from a low cost scanning laser ophthalmoscope

2011 ◽  
Author(s):  
Sergio Murillo ◽  
Sebastian Echegaray ◽  
Gilberto Zamora ◽  
Peter Soliz ◽  
Wendall Bauman
Keyword(s):  
Image Quality ◽  
Low Cost ◽  
Super Resolution ◽  
Scanning Laser Ophthalmoscope ◽  
Quality Analysis ◽  
Scanning Laser ◽  
Image Quality Analysis

Plastic Diffraction-Limited Wide-Angle Air-Spaced Cooke Triplet Lens Designs for SWIR Imaging Applications: Image Quality Analysis Using Zemax®

2018 ◽  
Vol 7 (1) ◽  
pp. 38-57
Author(s):  
Sami D. Alaruri
Keyword(s):  
Image Quality ◽  
Cell Phone ◽  
Low Cost ◽  
Industrial Applications ◽  
Quality Analysis ◽  
Lens Design ◽  
Strehl Ratio ◽  
Quality Performance ◽  
Optical Components ◽  
Image Quality Analysis

In this study, the optical performance of plastic (acrylic-polycarbonate-acrylic, acrylic-polystyrene-acrylic, PMMA-polycarbonate-PMMA, and PMMA-polystyrene-PMMA) diffraction-limited air-spaced Cooke triplet lens designs optimized for the spectral range 0.995 to 1.01 µm are presented. Comparing the acrylic-polycarbonate-acrylic air-spaced Cooke triplet lens design with the other three plastic lens designs, the obtained results indicate that the acrylic-polycarbonate-acrylic design can achieve the best image quality performance at 50% contrast 56 cycles/mm and Strehl ratio= 0.989 for the on-axis field-of-view (FOV= 0°). Furthermore, over the temperature range 18.30 to 22.25 °C and over +12° FOV the acrylic-polycarbonate-acrylic air-spaced Cooke triplet lens design performance remained diffraction-limited (Strehl ratio < 0.8). The low cost and the light weight of plastic optical components makes them attractive for several industrial applications. As an example, plastic lenses are incorporated into cell phone cameras and LED collimation optics.

Standardization of Image Quality Analysis – ISO 19264

2016 ◽  
Vol 2016 (1) ◽  
pp. 111-116 ◽  
Author(s):  
Dietmar Wueller ◽  
Ulla Bøgvad Kejser
Keyword(s):  
Image Quality ◽  
Quality Analysis ◽  
Image Quality Analysis

Image Quality Analysis of X-ray Grating Interferometer Using Integrating-bucket Method

2020 ◽  
Vol 64 (2) ◽  
pp. 20503-1-20503-5
Author(s):  
Faiz Wali ◽  
Shenghao Wang ◽  
Ji Li ◽  
Jianheng Huang ◽  
Yaohu Lei ◽  
...  
Keyword(s):  
Image Quality ◽  
Phase Contrast ◽  
Quality Analysis ◽  
Phase Contrast Imaging ◽  
Phase Image ◽  
Contrast Imaging ◽  
High Quality ◽  
Image Quality Analysis ◽  
X Ray ◽  
Grating Interferometer

Abstract Grating-based x-ray phase-contrast imaging has the potential to enhance image quality and provide inner structure details non-destructively. In this work, using grating-based x-ray phase-contrast imaging system and employing integrating-bucket method, the quantitative expressions of signal-to-noise ratios due to photon statistics and mechanical error are analyzed in detail. Photon statistical noise and mechanical error are the main sources affecting the image noise in x-ray grating interferometry. Integrating-bucket method is a new phase extraction method translated to x-ray grating interferometry; hence, its image quality analysis would be of great importance to get high-quality phase image. The authors’ conclusions provide an alternate method to get high-quality refraction signal using grating interferometer, and hence increases applicability of grating interferometry in preclinical and clinical usage.

Image quality analysis and low dose dental CT

2005 ◽  
Vol 1281 ◽  
pp. 1177-1181 ◽  
Author(s):  
S.D. Bianchi ◽  
O. Rampado ◽  
L. Luberto ◽  
A.F. Genovesio ◽  
C.C. Bianchi ◽  
...  
Keyword(s):  
Image Quality ◽  
Low Dose ◽  
Quality Analysis ◽  
Image Quality Analysis ◽  
Dental Ct

Image quality analysis for different atmosphere slant path Zenith angle

2022 ◽  
Author(s):  
Faten Sh. Zainulabdeen ◽  
Ali H. Al-Hamdani ◽  
Mohammed A. R. Hussein ◽  
Qusay K. Ahmed ◽  
Zaman H. Kareem
Keyword(s):  
Image Quality ◽  
Zenith Angle ◽  
Quality Analysis ◽  
Image Quality Analysis ◽  
Slant Path
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