Cross-reference tables

Tables to help you navigate Imatest

Imatest is a complex, rich application involving a great many image quality factors, modules, and test charts. The tables below, sorted by Quality Factor, Module, and Test chart are designed to help navigate the site. A Table of contents is also available.

Suppliers

Sorted by image quality factors

Image quality factors have their own page. A brief list of recommended test charts is given in the FAQ.

Sorted by module

Modules are listed on the Tour page.

Sorted by test chart

This list is primarily commercially-available test charts. You can print out additional charts from files generated by the Test Charts module.

Chart	Quality factor	Module	Comments
Christophe Metairie Photographie DigitaL TargeT 003 (CMP DT003)	Color accuracy, Tonal response	Multicharts
Custom "pie" charts	Color accuracy, Tonal response	Multicharts (Special charts)	Imatest Master only.
GretagMacbeth ColorChecker SG	Color accuracy, Tonal response	Multicharts	Imatest Master only.
GretagMacbeth ColorChecker (24-patch)	Color accuracy, Tonal response, Noise	Colorcheck, Multicharts	Widely available; consistent pigments. A compatible chart is available from Danes-Picta.
ISO 12233, Applied Image QA-77	Sharpness, Lateral chromatic aberration, Subjective Quality Factor (SQF)	SFR	Printed on high resolution photographic media. Slanted-edge charts printed on a high quality inkjets can perform the same function, but aren't as fine.
IT8.7	Color accuracy, Tonal response	Multicharts	Requires reference file
Monochrome charts: ISO-16067-1, QA-62, EIA Grayscale, ISO-14524 OECF, ISO-15739 Noise, 20-patch OECF charts	Dynamic range, Tonal response, Contrast	Stepchart, Multicharts (Special charts)	Imatest Master only. Most are available from Applied Image.
QPcard 201	Color accuracy, Tonal response	Multicharts	Inexpensive chart
Step charts (reflective): Kodak Q-13, Q-14, etc.	Tonal response, Contrast, Noise, Exposure accuracy, Veiling glare	Stepchart, Multicharts. Dynamic Range	Veiling glare is measured with "black hole" next to the Q-13. May be purchased from professional camera stores or Danes-Picta.
Step charts (transmissive): Stouffer T4110, etc.	Dynamic range, Tonal response, Contrast, Noise	Stepchart	Best for measuring dynamic range
Log Frequency, Log F-Contrast (sine or bar)	Sharpness, Color moiré, Detail lost to software noise reduction	Rescharts Log Frequency, Log F-Contrast	MTF is a check on the slanted-edge method; more direct but less accurate.
Siemens star chart	Sharpness	Star chart	Imatest Master only. May be created for printing by Test Charts or purchased from Image Engineering.

Test images

These images were put online for testing Imatest API/EXE, but they are generally useful for testing Imatest. This is not a comprehensive list of charts, which can be found in the above table.

Module	Image file	Description
SFR	64kB SFR_webcam_A_custom_80cm.jpg	Webcam image of high and medium contrast custom charts created by Test Charts and printed on an Epson R2400 printer: these can have larger regions of interest (ROIs) than the ISO 12233 chart below.
	125 kB SFR_webcam_A_ISO_80cm.jpg	Webcam image of ISO 12233 chart. At this distance the available regions of interest are very small.
Colorcheck	77 kB GMB_Q-14_webcam.jpg	Webcam image of the Kodak Q-14 grayscale and GretagMacbeth ColorChecker.
Stepchart	248 kB Stepchart_DR_Canon_G2.JPG	Image of the Stouffer T4110 transmission test chart taken with the Canon Powershot G2. Excellent dynamic range measurement.
	(image in Colorcheck, above) GMB_Q-14_webcam.jpg	Webcam image of the Kodak Q-14 grayscale and GretagMacbeth ColorChecker.
	1.68 MB Stepchart_OECF_1159.JPG	12-patch OECF chart (for API and Imatest Master only ). Available from Applied Image.
	1.72 MB Stepchart_Can_TS90_8_1869.JPG	Image of Kodak Q-14 chart with "black hole" cavity for measuring veiling glare (susceptibility to lens flare)
Distortion	204 kB distortion_webcam_a.jpg	Webcam image of distortion grid.
Uniformity (Light Falloff)	185 kB uniformity_1600_JPEG80.jpg	Image of nearly uniformly illuminated surface taken with the Canon 10-22mm lens on the EOS-20D, f/4.5, 22mm, ISO 1600.
Log F-Contrast	92 kB Rescharts Log Frequency-Contrast jpeg	Image Log-Frequency-Contrast chart (cropped), acquired by the EOS-20D camera, 24-70mm f/2.8L lens set at 42mm, f/5.6, ISO 100. Can also be used with Log Frequency.

Algorithms