Imatest Documentation
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Imatest Documentation | |
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Tour of Imatest
Cross-reference tables - Tables to help you navigate Imatest
Colorcheck - Measures color quality and noise using the GretagMacbeth ColorChecker
Stepchart - Measures tonal response, noise, and dynamic range using step charts
SFR - Measures image sharpness using a slanted-edge target
Uniformity (Light Falloff) - Measures light falloff (lens vignetting) and sensor uniformity
Distortion - Measures radial lens distortion
Print Test - Measures print quality factors: color response, tonal response, and Dmax
Test Charts - Creates test charts for high quality inkjet printers
Multicharts - Interactive analysis of several test charts
Rescharts - Analysis of resolution-related charts
Introduction - Getting started - The Rescharts window - Displays and options - Slanted-edge SFR - Log frequency (simple) - Log frequency-contrast
Imatest API - Executable programs for automated testing
Image Quality
Image quality factors - Overview and Imatest measurements
Introduction - Summary table - Image quality factors - Sharpness - Noise - Dynamic range - Color accuracy - Distortion - Uniformity - Lateral chromatic aberration - Veiling glare - Color moire - Sofware artifacts - Data compression - Printer quality factors - Print Dmax - Print color gamut
Sharpness - What is it and how is it measured?
SQF - Subjective Quality Factor
Introduction - Appearance - Noise measurements - Noise summary - F-stop noise - The mathematics of noise - Links
Sharpening - Why standardized sharpening is needed for comparing cameras
Sharpness comparisons - for several digital cameras
Introduction - Explanation of results - Tables of results - Interpretation of MTF - Some observations - Links
Chromatic Aberration - AKA Color fringing
Shannon information capacity - information that can pass through a channel without error
The Imatest Test Lab - How to build a testing lab
Training
Two-day training - July 10-11 in Boulder, Colorado)
Imatest Instructions
Installation - and getting started
Running Imatest - RAW files - Other controls - Pulldown menus - Figures - .CSV and XML output - Use of Imatest
Using SFR Part 1 - Setting up and photographing SFR targets
Using SFR Part 2 - Running Imatest SFR
Image file - ROI - Additional input - Equations - Gamma - Warnings - Saving - Repeated runs - Excel CSV output
MTF Compare - Compare MTFs of different cameras and lenses
Dynamic Range - Calculate Dynamic Range from several Stepchart images
What Colorcheck does - Colorchecker colors - Photographing target - Colorchecker reference sources - Output - Saving - Algorithm - Links
Colorcheck Appendix - Algorithms and reference formulas
Using Multicharts - Interactive analysis of several test charts
Multicharts Special Charts - Additional charts, including circles arranged on a square
Using Rescharts - Analysis of resolution-related charts
Introduction - Getting started - The Rescharts window - Rescharts modules - Slanted-edge SFR - Log frequency (simple) - Log frequency-contrast
Log Frequency - Analysis of log frequency-varying charts
Introduction - Photographing, running - Color moire - Output - Pattern - MTF - Comparisons - Calculation details - Nyquist, aliasing
Log F-Contrast - Analysis of charts that vary in log frequency and contrast
Introduction - Creating, printing - Photographing, running - Output - Pattern - MTF - MTF/contrast contours - MTFnn
Star Chart - Analysis of the Siemens star chart
Introduction - Creating, photographing, running - Output - MTF - MTFnn, MTFnnP - MTF contours - Equations
Using Uniformity (Light Fallof) - Measures light falloff (lens vignetting) and sensor nonuniformity
Uniformity (Light Falloff): Imatest Pro - Instructions for Imatest Pro
Input dialog box - Hot and dead pixels - Color shading - Uniformity profiles - Polynomial fit - Histograms - Noise detail - Spot detection
Introduction - Instructions - Results - Main figure - Decentering - Corrected image - Intersection figure - Radius correction fig - Links - Algorithm
Using Print Test - Measure print quality factors: color response, tonal response, and Dmax
Using Test Charts - Creates test charts for high quality inkjet printers
Using Screen Patterns - Monitor patterns for Light Falloff, SFR, Distortion, and monitor calibration
Introduction - Light Falloff - SFR - Distortion - Monitor calibration - Monitor gamma - Zone plate - SMPTE color bars - Slanted edges - Colorchecker-Stepchart - Squares (checkerboard)
SVG (Structured Vector Graphics) Test Charts - for improved MTF measurements
Imatest API/EXE instructions - Running Imatest API/EXE
Introduction - Installation - Setup - INI files - DOS call - Calling from Matlab - Testing - Error handling
Maskfill - Removes features that interfere with Imatest measurements
Appendix
FAQ - Frequently Asked Questions
Version comparisons - Differences between versions. Which is right for you?
Customers and publications - A list of better-known customers and publications
Troubleshooting - What to do when Imatest doesn't work
Contact - About Imatest, and how to reach us
Imatest Change Log - Imatest release history
Complete PDF documentation - The whole website, over 8 MB and 215 pages, updated occasionally
License - The Imatest End User License Agreement (EULA)
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