Imatest Documentation

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Imatest Documentation recommend saving them in subfolder IT of the Imatest installation folder: C:\Program files\Imatest\IT (in English language installations) or in the equivalent in other languages (for example, C:\Programme\... in German). For testing we recommend setting the first parameter in the DOS call to -4 (keep the DOS window open and display the error log if an error occurs). Downloadable test images Module Image file INI & BAT files Description SFR Colorcheck Stepchart Distortion Uniformity (Light Falloff) To use these test files, 64kB SFR_webcam_A_custom_80cm.jpg 125 kB SFR_webcam_A_ISO_80cm.jpg 77 kB GMB_Q-14_webcam.jpg 248 kB Stepchart_DR_Canon_G2.JPG (image in Colorcheck, above) GMB_Q-14_webcam.jpg 1.68 MB Stepchart_OECF_1159.JPG 1.72 MB Stepchart_Can_TS90_8_1869.JPG 204 kB distortion_webcam_a.jpg 185 kB uniformity_1600_JPEG80.jpg stepchart_DR_canon_G2.ini stepchart_DR_canon_G2.bat 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. Webcam image of ISO 12233 chart. At this distance the available regions of interest are very small. Webcam image of the Kodak Q-14 grayscale and GretagMacbeth ColorChecker. Image of the Stouffer T4110 transmission test chart taken with the Canon Powershot G2. Excellent dynamic range measurement. Webcam image of the Kodak Q-14 grayscale and GretagMacbeth ColorChecker. 12-patch OECF chart (for IT and Imatest Master only ). Available from Applied Image. Image of Kodak Q-14 chart with "black hole" cavity for measuring veiling glare (susceptibility to lens flare) Webcam image of distortion grid. Image of nearly uniformly illuminated surface taken with the Canon 10-22mm lens on the EOS-20D, f/4.5, 22mm, ISO 1600. Make any necessary changes to the saved ini and bat files using a text editor. You'll need to update folder names if Imatest is installed in a folder other than C:\Program files\Imatest or the test files (above) have been saved in a folder other than C:\Program files\Imatest\IT. You only need to edit folder names in the appropriate section of the ini file, which follows the module name enclosed in brackets: [sfr], [colorcheck], [q13] (for Stepchart), [distortion], or [uniformity] (for Light Falloff). Open a DOS window (Start, Run..., cmd; Start, All Programs >, Accessories >, Command Prompt). 400 of 451
Imatest Documentation Change to the directory where the files are located. Typically, enter cd C:\Program files\Imatest\IT. Run the bat file by entering the file name, omitting the bat-extension. For example, stepchart_DR_canon_G2 Verify the results by looking in the folder where resuts are stored, typically subfolder Results of the folder that contains the image, ini, and bat files. If you found errors that aren't obvious and aren't covered in the Troubleshooting page, please contact us. Error handling Imatest IT/EXE modules return a value of 0 if they terminate correctly or 1 or larger if they terminate in error. If an error is detected, a message is appended to the error log file, which has the name of the form module.log (sfr.log, colorcheck.log, stepchart.log, distortion.log, or uniformity.log), and is is located in %APPDATA%\Imatest. written to the CSV and/or XML file that would otherwise contain the results of the run. For the example above, "c:\program files\imatest\stepchart.exe" -1 "c:\program files\imatest\IT\Stepchart_DR_Canon_G2.JPG" "c:\program files\imatest" "c:\program files\imatest\IT\stepchart_DR_canon_G2.ini" "c:\program files\imatest\IT\Results" if a CSV output file were called for, it would be c:\program files\imatest\IT\Results\Stepchart_DR_Canon_G2_summary.csv ; if an XML output file were called for, it would be c:\program files\imatest\IT\Results\Stepchart_DR_Canon_G2.xml . APPDATA is a DOS environment variable whose value can be found by opening a DOS window (you can double-click start-dos.bat in the Imatest folder), and typing set APPDATA (Returns the folder name corresponding to APPDATA) --or-dir "%APPDATA%\Imatest" APPDATA has values of the form C:\Users\your name\AppData\Roaming in Windows Vista. C:\Documents and Settings\your name\Application Data in Windows XP. To facilitate debugging, the log file will be opened in Notepad if an error is detected and the first parameter of the IT/EXE DOS call is -3 or -4. Lines in the log file have the format, Example: [Date Time], file_name, error_message [05-May-2007 23:34:08], c:\Imatest\data_distortion\distgrid101.jpg, Inconsistent Vert lines 17 det.; 18 avg. Incomplete line? We are constantly working to improve the robustness of Imatest algorithms to minimize the occurrences of errors, which are typically caused by poor region (ROI) selections or poor quality images. 401 of 451
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Imatest Documentation © 2009 Imate
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Imatest Documentation Using SFRplus
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Imatest Documentation Image Quality
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Imatest Documentation tilted (about
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Imatest Documentation MTF50 in Line
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Imatest Documentation SQF Subjectiv
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Imatest Documentation RAW converter
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Imatest Documentation P_Rm = O_Rm*A
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Imatest Documentation CSV files- Ex
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Imatest Documentation RAW files RAW
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Imatest Documentation SFR results:
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Imatest Documentation Right column
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Imatest Documentation Right: Input
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Imatest Documentation Multi-ROI 2D
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Imatest Documentation Using Reschar
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Imatest Documentation Log F-Contras
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Imatest Documentation Rescharts SFR
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Imatest Documentation Figures (.PNG
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Imatest Documentation QA-61 ISO-160
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Imatest Documentation ISO-15739 Noi
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Imatest Documentation You can enter
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Imatest Documentation Results If RA
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Imatest Documentation Dynamic range
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Imatest Documentation Using Colorch
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Imatest Documentation horizontal fi
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Imatest Documentation Colorcheck in
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Imatest Documentation The first fig
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Imatest Documentation Color correct
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Imatest Documentation Options: Colo
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Imatest Documentation The Labsphere
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Imatest Documentation Scaling butto
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Imatest Documentation Using Distort
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Imatest Documentation 11. GENERAL T
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