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Imatest Documentation Vectorscope preview The vectorscope duplicates the display in hardware vectorscopes, used for adjusting and calibrating broadcast and cinema cameras. It is designed to work optimally with the DSC Labs ChromaDuMonde 28 chart. (Other DSC charts will be added as customer demand warrants.) There are several display options, including background color, reference and input display color. Llight input colors (circles) and dark reference colors (squares) are shown on a dark background. HDTV, SDTV, and NTSC/PAL vectorscope patterns can be displayed. The recommended color space for these signals is sRGB. At the present time the vectorscope omits the standard target rectangles because the RGBCMY primaries in the CDM chart are different from the standard color bars. This image is a preview of a full-featured vectorscope function that will be included in an upcoming broadcast/cinema version of Imatest that continuously refreshes frames from a video stream using the Reload button instead of reading individual images from files. Vectorscope preview GretagMacbeth TM and ColorChecker ® are trademarks of X-Rite, Incorporated, which is not affiliated with Imatest. ColorChecker L*a*b* values are supplied courtesy of X-Rite. 316 of 451
Imatest Documentation Multicharts Special Charts Additional charts, including circles arranged on a square 7-patch pie chart Instructions Special Charts (a part of Multicharts, available with Imatest Pro) analyzes — patterns consisting of 7 to 12 squares uniformly distributed around a circle, including portions of monochrome or color "pie" charts similar to the one shown on the left. These charts are useful for microscopy and for systems with significant light falloff (vignetting). — any of the monochrome test charts shown below, which can also be analyzed by Stepchart. They are described in detail in Applied Image and ISO charts for Stepchart. QA-61 ISO-16067-1 Scanner ISO-15739 Noise target QA-62 20-patch OECF targets ST-51 EIA Grayscale ST-52 ISO-14524 12-patch OECF target ITE Grayscale These illustrations show how the monochrome charts should be cropped. Photograph or scan the chart, taking care to avoid glare, which can be problematic with charts with semigloss and glossy surfaces, especially with wide angle lenses. A recommended lighting setup is described here and in the page on the Imatest testing lab. To start Special Charts, run Imatest and click the Multicharts button on the left side of the Imatest window. The Multicharts window will appear with brief instructions. Select Special Charts from the Read image file. Chart type: popup menu in the middle-right of the Multicharts window. The contents of this window is highlighted (brown text, yellow background) when Multicharts starts. 317 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 samples (fold
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Imatest Documentation Figures (.PNG
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Imatest Documentation SVG SFR chart
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Imatest Documentation Instructions
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Imatest Documentation 7. 8. Mask im
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Imatest Documentation 9. Corr Image
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Imatest Documentation Appendix Cros
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Imatest Documentation Jan. 6, 2007
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Imatest Documentation Sept. 11, 200
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Imatest Documentation XML Changes N
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Imatest Documentation License The I
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