PatchTool PatchReader-File as Ref.
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In this mode you select a file already opened in PatchTool. The file layout is shown in a preview window; if required, you can enlarge the tool window to see the complete layout. Click on the "Start" button when ready. The reference patches of the currently selected row are shown in a separate display, on top of the layout, as shown below. The measurements will also be shown in the top display when done. You can select any patch to make individual measurements, or use a timer to automatically make measurements at fixed time intervals. It is also possible to take measurements one row at a time, by scanning the instrument from one side of the chart to the other. Select the Strip mode with the menu within the “Measurement mode” box; the contrast between neighboring patches must be high enough so that the instrument automatically detects a transition OR the patches must be separated by contrast markers consisting of thin black and/or white bars before and after each patch (Note: Targets with contrast bars can easily be created with PatchTool). Click the “Stop” button at any time. The measurements are saved in a CGATS type file which can be readily opened by PatchTool and most programs which can read color files. For the measurements of the screenshot below we selected the M0/M1/M2 measurement conditions. We see that the i1Pro 2 ruler is required (and selected) and the low resolution target is not available; both checkboxes are disabled. Please consult the Help manual for more information on the various measurement modes available. Please note that to get the data corresponding to all all three measurement conditions, we need to do two scans for each target row. Because we use the i1Pro 2 ruler, we can start the first scan in any direction, as indicated in the screenshot; the second scan will be done in the reverse direction.
Screenshots of the "Unconstrained" and "Custom chart" measurements modes are shown on the previous pages. The CGATS file options dialog which opens after PatchReader measurements is shown on the next page. |
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