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Most of these are self-describing and don't require a detailed description. Generally, you can can create these ROIs by choosing the corresponding tool and then clicking and dragging within the viewing area, once or multiple times. Certain ROI types are actually composite objects, defined by multiple points that you reposition in order to obtain the desired measurement.
Tools
The choice done in the Tools toolbar item defines what action is applied when you interact with the viewer using the mouse.
The following tools are available:
- WL/WW, to adjust the contrast and brightness windowing applied to the image;
- Pan, to move the image in the viewer;
- Zoom, to magnify the image;
- Rotate, to rotate the image;
- Stack, to switch between the loaded images;
- ROI, to create new ROIs and interact with them.
The actual function of the ROI tool can be further defined through the pop-up menu available in the down arrow of the Tools toolbar item. You may choose between the aforementioned ROI types and the extra Selector and Repulsor tools.
Calibration
To calibrate a viewer, create a distance ROI and double-click it to open its information panel. Click the Recalibrate button and you'll be able to redefine the ROI length. The app scales the viewer pixel size to match the entered value. All measurements done in this viewer are consequently updated.
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