Table of Contents
Image quality — Sharpness — Other IQ factors — IQ Utilities — Getting started —
Imatest Instructions – general — Troubleshooting — Knowledge Base highlights —
Sharpness modules — Tone, Color, Noise & Dynamic Range modules — Spatial & Uniformity modules —
Miscellaneous modules and utilities — Industrial Testing edition — Appendix
Offline (local) documentation Imatest documentation can now be viewed offline. Download this zip file to a convenient location, then unzip it. The Imatest site folder will contain a mirror of the Imatest documentation website (not the entire site, but including the Knowledge base and News). Double-click on index.html to open a fully navigable mirror of this page in your web browser. To open documentation directly from Imatest 5.0+, click on the Offline/Online Help button in the Help tab on the right of the Imatest main window, and follow the instructions. |
Image Quality
General — Introduction to Image Quality Factors
Sharpness

LSF (Line Spread Function) correction factor for slanted-edge MTF measurements for Imatest 4.1.2+
Chart Quality Index (CQI) – relates chart quality and size to MTF measurements; helps find the appropriate chart size for a camera with a given resolution. The Chart Finder is an interactive website for selecting chart size and media.
Other Image Quality Factors
Image quality utilities let you degrade, enhance, examine, and perform simple analyses of any image (not just test charts)
Main Window Map
SFR | Rescharts | Map of Imatest main window (4.2) with links to instructions. Click Help Mode in the Imatest main window to change buttons to open web instructions. |
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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 | 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 | Device Manager (IS only) | |||
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
The Imatest Functional Interface – A simplified interface for running tests with consistent settings
Knowledge Base highlights – Links to articles for troubleshooting, activation, and general advice on operation.
Tone, color, and spatial modules
Tone, Color, Noise, and Dynamic Range
Spatial and Uniformity modules
Miscellaneous modules and utilities