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?
Introduction - MTF - MTF equation - Slanted-edge measurements - Spatial frequency units - Results - Interpreting MTF50 - Calculation details - Links
Sharpening - and Standardized Sharpening for comparing cameras
MTF curves and Image appearance - Correlating measurement with appearance
Introduction - The Slanted-edge test - Reference image - Sharpened images - Blurred images - Sharpened + blurred images - Observations - Sharpness ranking - Links
SQF - Subjective Quality Factor
Introduction - Appearance - Noise measurements - Noise summary - F-stop noise - The mathematics of noise - Links
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
Imatest Instructions -- General
Installation - and getting started
Using Imatest - Introduction and general instructions
Running Imatest - Multi file read - RAW files - Other controls - Options I - Options II - EXIF data & ExifTool - Pulldown menus - Figures - .CSV and XML output - Use of Imatest
Introduction - Using RAW files - Bayer RAW - dcraw demosaicing - Rawview utility - Generalized Read Raw
The Imatest Test Lab - How to build a testing lab
Introduction - Hardware - Lighting - Easel - Light measurement - Tripod - Clamps - Putting it together - Targets - Aligning target & camera
Troubleshooting - What to do when Imatest doesn't work
Imatest Instructions -- Sharpness modules
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
SFR results: - Chromatic Aberration, Noise, and Shannon capacity plot
Using SFRplus Part 1 - The SFRplus chart: features and how to photograph it
Slanted-edge test - Advantages - Obtain chart - Framing - Lighting - Distance - Exposure - Tips - Links
Using SFRplus Part 2 - Running Imatest SFRplus
Running SFRplus - Rescharts - SFRplus settings windows - Parameters & setup window - Settings & options window - Gamma - Warnings - SFRplus summary
Using SFRplus Part 3 - Imatest SFRplus results
SFRplus results - Multi ROI - Edge & MTF display - Chromatic Aberration display - SQF display - Tonal response & gamma - Histograms & noise - Tonal response & gamma - Uniformity profiles - Image & geometry - 3D Plots - Lens-style MTF plot - Edge roughness plot - Color analysis - Excel CSV & XML output - Links
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
Random Scale-invariant - Analysis of a Random Scale-invariant pattern
Introduction - Creating, photographing, running - Output - MTF - MTFnn, MTFnnP - Power Spectral Density - Equations
Wedge - Analysis of hyperbolic or trapezoidal wedge patterns
Introduction - Recommendations - Instructions - Results - Limitations & Comparisons - Calculation details - MTF/Nyquist & Aliasing
MTF Compare - Compare MTFs of different cameras and lenses
Batchview - Postprocessor for viewing summaries of SFR, SFRplus results
Introduction - Test chart - Photograph - Run SFRplus - Rescharts SFRplus - SFRplus settings - Auto run options - Display options - Secondary readout - Interpret the results - Batches - Checklist - Links
Find Sharpest Files - Find thre sharpest files in a batch
How to Test Lenses with SFR - (old page: Imatest SFRplus recommended)
Imatest Instructions -- Tone, color, and spatial modules
Dynamic Range - Calculate Dynamic Range from several Stepchart images
What Colorcheck does - Colorchecker colors - Photographing target - Photographing target - Colorchecker reference sources - Output - Saving - 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 Light Falloff - Measure lens vignetting and sensor nonuniformity
Using Uniformity-Interactive - Interactive measurement of vignetting and sensor nonuniformity
Light Falloff: Imatest Master - Features in Imatest Master-only
Input dialog box - Hot and dead pixels - Color shading - Uniformity profiles - Polynomial fit - Histograms - Noise detail - Spot detection
Using Blemish Detect - Measure visible sensor defects
Imatest Instructions -- Miscellaneous modules and utilities
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 Test Charts - Scalable Vector Graphics charts for MTF measurements
Introduction: m x n squares - Squares and wedges - USAF 1951 chart - Operation - Options - Output figure - Printing
View/Rename Files - using EXIF data
Imatest IT/EXE instructions - Running Imatest IT (Industrial Testing)/EXE
Introduction - Installation - Setup - INI files - DOS call - Calling from Matlab - Testing - Error handling
Using Print Test - Measure print quality factors: color response, tonal response, and Dmax
Maskfill - Removes features that interfere with Imatest measurements
Appendix
Cross-reference tables - Tables to help you navigate Imatest
Version comparisons - Differences between versions. Which is right for you?
Troubleshooting - What to do when Imatest doesn't work
Installation problems - Problems after install - Missing DLLs - Runtime problems - INI files - Command (DOS) window - Diagnostics runs - Path conflicts
Imatest Change Log - Imatest release history
XML Changes - New XML improvements in Imatest 3.5.1+
Complete PDF documentation - The whole docs 14 MB and almost 500 pages, updated occasionally
License - The Imatest End User License Agreement (EULA)
