Interactive measurements enable you to measure the properties of a sample, for example, angles, area, and intensities of pixels. The tools can be classified as follows (the available tools depend on your hardware setup and licenses):
- Annotations
- Enable you to add text labels to an image, mark objects of interest, or determine the coordinates of a point in the standard or relative coordinate system.
- Areas/Contours
- The majority of these tools enable you to calculate the area (in pixels) enclosed by various shapes. Furthermore, the mean intensity of the enclosed pixels is also calculated. Some Area Tools are used to calculate the length of curves, such as the Spline Curve tool.
- Distances
- Enable you to measure angles and distances between lines, curves and points.
The software offers the possibility to use a magnetic cursor in your image. This cursor detects edges/contrast changes and automatically moves to them, which can help you to add measurements or annotations. Note that this cursor only works reliably on one channel, so for multi-channel images only activate one channel in the view options. The magnetic cursor can be activated and deactivated via the right-click context menu of your image, or with the shortcut Alt + C.
For more information on an individual tool, see the tool reference.