Annotation tools can be found on the Viewer Tab by selecting the Annotations button. These tools can be used to measure or highlight areas on an image. All effects that are placed on the image using these tools can be done without losing the original image.
Use this button to display or hide the Annotations toolbar.
Select
Use the Select tool to select a region of interest on an image. After clicking the Select tool, left-click and drag the mouse over the region to be highlighted.
Arrow
Use the Arrow tool to draw an arrow to a particular point on the image displayed on the screen. After clicking the Arrow tool, move the mouse to the point where the arrowhead should be. Then left-click and drag the mouse to the starting point for the arrow.
Rectangle
Use the Rectangle tool to draw a rectangle of any size on the image displayed on the screen. After clicking the Rectangle tool, move the mouse to one corner of the rectangle and then left-click and drag the mouse to the opposite corner.
Ellipse
Use the Ellipse tool to draw an ellipse of any size on the image displayed on the screen. After clicking the Ellipse tool, left-click and drag the mouse over the area where the ellipse should be.
Text
Use the Text tool to create an editable text box on the image. After clicking the Text tool, left-click and drag the mouse over the area where the text box should display. Double-click the text box to change the text appearing inside of it. When edits are complete, select an area outside of the text box to accept the changes.
Highlight
Use the Highlight tool to draw a highlighted rectangle of any size on the image displayed on the screen. After clicking the Highlight tool, left-click and drag the mouse over the area to be highlighted.
Ruler
Use the Ruler tool to measure the actual distance from one point to another point on an image. After clicking the Ruler tool, click and hold on the first point of measurement. Drag to the second point and release the mouse. The measurement is displayed in millimeters.
Poly Ruler
The Poly Ruler tool is similar to the Ruler tool, but is used for non-linear measurements. After clicking the Poly Ruler tool, click and hold on the first point of measurement, then click and drag on the second point of the measurement, then the third, and so on until you are finished. The measurement is displayed in millimeters.
Protractor
Use the Protractor tool to measure angles. After clicking the Protractor tool, click and drag starting from (1) the point where the angle will be measured to (2) the point where the first line will end. Then click and drag to (3) the point where the second line will end. The measurement of the angle appears in red.
Delete
Use the Delete tool to delete selected annotations appearing on the image. After selecting the annotation to be deleted, click the Delete tool. Then select the annotation again to confirm that it is what you want to delete.
See Also