Documentation

Table of Contents

Image qualityGetting started — Imatest Instructions – generalTroubleshooting
  Sharpness modulesTone, Color, Noise & Dynamic Range modulesSpatial & Uniformity modules
Miscellaneous modules and utilities
Industrial Testing editionAppendix

Image Quality

General

Image quality factors – Overview and Imatest measurements

Sharpness

Sharpness – What is it and how is it measured?
Sharpening - and Standardized Sharpening for comparing cameras
Chart Quality Index (CQI) – relates chart quality and size to MTF measurements;
          lets you find the appropriate chart size for a camera with a given resolution
MTF curves and Image appearance – Correlating measurement with appearance

Other

Chromatic Aberration - AKA Color fringing
IntroductionModulesEquationsRAW files -Related documents
Shannon information capacity - information that can pass through a channel without error

Main Window Map

 
SFR Rescharts Map of Imatest main
window (4.0) with
links to instructions.
Click Help Mode in the Imatest main
window to change buttons to open
web instructions.

   
SFRplus auto  SFRplus setup Help guide
Random/Dead Leaves   Manage settings
Log F-Contrast Batchview   Error handling
Star MTF Compare    
Wedge OIS/Image Compare View/Rename Files
Any img sharpness  

imatest_main_320WImatest 4.0 window

Find Sharp Files
Colorcheck Multicharts Test Charts
Stepchart Dynamic Range Screen Patterns
Multitest (Multitest) Setup dcraw Rawview
Uniformity Uniformity Interactive  Read Raw EXIF
Blemish Detect Fixed vs. Interactive Pass/Fail Monitor
Distortion Last module    
Dot pattern Exit Close Figures    Help mode  Options I ROIs… Options II

Imatest Instructions — Getting started

 
Please note:  Each Imatest license can be activated on only one computer at a time, but the activation can be easily moved between computers, especially if they’re online. You can install Imatest– and keep it installed– on as many computers as you like (Macintosh as well as Windows– your license works for both; you never have to uninstall it). To move the activation to another computer, you’ll need to deactivate it on the old computer then activate it on the new one, following the instructions above. You may do this as often as you like.

Imatest Instructions — general

Skype video specification support - Instructions and suggestions
The Imatest Functional Interface - A simplified interface for running tests with consistent settings
Building a Low-Cost Test Lab – How to build a testing lab
Saved settings - Imatest.ini and INI files for use with Imatest IT
Pass/Fail Monitor - Realtime display and update of pass/fail results (useful with Imatest IT)
Troubleshooting - What to do when Imatest doesn’t work

Sharpness modules

SFR

Using SFR Part 1 - Setting up and photographing SFR targets
Using SFR Part 2 - Running Imatest SFR
SFR results: - Chromatic Aberration, Noise, and Shannon capacity plot

SFRplus

Using SFRplus Part 1 – The SFRplus chart: features and how to photograph it
Using SFRplus Part 2 – Running Imatest SFRplus
Using SFRplus Part 3 – Imatest SFRplus results
sfrplus_predistort_200WPre-distorted SFRplus charts for Fisheye Lenses
          with many applications such as automotive rear view cameras


eSFR ISO: Automated analysis of the ISO 12233:2014 Edge SFR chart

Using eSFR ISO Part 1 – The ISO 12233:2014 E-SFR chart: features and how to photograph it
Using eSFR ISO Part 2 – Running Imatest eSFR ISO
Using eSFR ISO Part 3 – Imatest eSFR ISO results

Rescharts modules– Log F-Contrast, Star, Random, Wedge

Using Rescharts – Analysis of resolution-related charts
Log Frequency – Analysis of log frequency-varying charts
Log F-Contrast – Analysis of charts that vary in log frequency and contrast
Star Chart – Analysis of the Siemens star chart
Random/Dead Leaves – Scale-invariant test charts
          (including Imatest Spilled Coins) for measuring texture sharpness
Texture examples – More details of Imatest Spilled Coins texture sharpness measurements
Dead Leaves measurement issue – Illustrates challenges posed by extreme signal processing
Wedge – Analysis of hyperbolic or trapezoidal wedge patterns

Sharpness utilities & postprocessors

MTF Compare – Compare MTFs of different cameras and lenses
Image Stabilization/Sharpness Compare – SFRplus postprocessor for analyzing (Optical) Image Stabilization
          and comparing sharpness of different images
Batchview – Postprocessor for viewing summaries of SFR, SFRplus results
Find Sharpest Files – Find thre sharpest files in a batch
How to Test Lenses with SFR – (old page: Imatest SFRplus recommended)
 

Tone, color, and spatial modules

Tone, Color, Noise, and Dynamic Range

Colorcheck/Multitest Appendix – Algorithms and reference formulas
New Imatest Dynamic Range film chart with Dmax = base+3.4Dynamic Range – Calculate Dynamic Range from several Stepchart images
Using Multicharts – Interactive analysis of color & grayscale test charts
Using Multitest – Fixed (batch-capable) analysis of color & grayscale test charts
Multicharts/Multitest/eSFR ISO Noise – including chroma, sensor (RAW), and visual noise
Multicharts/Multitest Special Charts – Additional charts, including ISO OECF and noise chats and circles arranged on a square
Measuring test chart patches – with a Spectrophotometer and one of two software packages

Spatial and Uniformity modules

Light Falloff contour plotUsing Uniformity, Part 1(formerly Light Falloff) Measure lens vignetting and image nonuniformity
Using Uniformity-Interactive – Interactive measurement of vignetting and sensor nonuniformity
          (can be used with Image Sensor edition)
Using Uniformity, Part 2 – Features in Imatest Master and IS (not in Studio)
Using Blemish Detect – Measure visible sensor defects
Testing flat screen displays – with Imatest Blemish Detect
Dot Pattern – Analysis of a grid of circular dots
 

Miscellaneous modules and utilities

Using Test Charts – Creates test charts for high quality inkjet printers
SVG Test Charts – Scalable Vector Graphics charts for MTF measurements
Using Screen Patterns – Monitor patterns for Light Falloff, SFR, Distortion, and monitor calibration
View/Rename Files – using EXIF data
Composite Chart – Create a synthetic test chart from several individual image files.
Using Print Test – Measure print quality factors: color response, tonal response, and Dmax
IntroductionInstructions – Results

Imatest IT— Industrial Testing (non-GUI)

Imatest IT/EXE instructions - Running Imatest IT (Industrial Testing)/EXE
Imatest IT/DLL instructions - Running Imatest IT (Industrial Testing)/DLL
Imatest INI file reference - Reference to INI files for IT/EXE and IT/DLL users (sections used in several modules)
Implementing Pass/Fail – Setting up Pass/Fail criteria and Pass/Fail Reference. For Imatest IT and GUI versions.

Appendix

FAQ – Frequently Asked Questions
Cross-reference tables - Tables to help you navigate Imatest
Troubleshooting - What to do when Imatest doesn’t work
Imatest Change Log - Imatest release history
XML Changes - New XML improvements in Imatest 3.5.1+
Complete PDF documentation – Separate PDF files in a downloadable zip file- 36 MB, October 4, 2012
Complete PDF documentation (old) – 14 MB and almost 500 pages, updated October 2009 (Imatest 3.5.2)
License - The Imatest End User License Agreement (EULA)