Add Measurement Tool

Measurement tools include points, lines, polylines, rectangles, ellipses, polygons and delta tools. Add one or more measurement tools on the image for temperature analysis. Measurement results are displayed in an independent measurement results table window or overlaid on the image.

Figure 1 Measurement Tool Toolbar

Note

Up to 32 measurement tools can be added in total.

Add Measurement Tool

Click on a tool in the toolbar to start drawing on the image. You can keep drawing the same type tools until you press the ESC key or click the tool icon again.

Table 1 Drawing Methods of Measurement Tools
Tool Type	Drawing Method
Point	Click , then click anywhere on the image to add a measurement point.
Line	Click , then drag the mouse anywhere on the image to draw a straight line. Note Hold the Shift key while drawing to create a vertical or horizontal line.
Polyline	Click to expand the list, select to enter drawing mode. Left-click on the image to add nodes of the polyline, right-click to end drawing. Note Up to 10 nodes are allowed.
Rectangle	Click , left-click on the image and drag the mouse to draw a rectangle.
Ellipse/Circle	Click to expand the list, select , then left-click on the image and drag the mouse to draw an ellipse. Note Hold the Shift key while drawing to create a circle.
Polygon	Click to expand the list, select , then left-click on the image to add nodes of the polygon. Right-click to end drawing. Note Up to 10 nodes can be added.

Note

The client supports entering different tool drawing states through shortcut keys. Go to the shortcut key page to view and modify. See View and Edit Shortcut Keys for instructions.

Add Delta Tool

Delta tools are used to calculate temperature differences. For example, the difference between the highest temperature measured by a point measurement tool and the lowest temperature measured by a line measurement tool.

Click on the toolbar, and set relevant parameters in Delta Tool Settings. Alternatively, select a measurement tool or temperature point, hold the Ctrl key, and click another measurement tool or temperature point to quickly create a delta tool.

Select Measurement

Set the calculation formula. Select the measurement tool and temperature type.

Note

Constant refers to a custom temperature value that must be manually entered.
Image refers to the temperature of the image (highest, lowest, average, and center temperature).

Result

Displays the calculated temperature difference.

Note

Up to 4 delta tools can be set.
The temperature difference results between measurement tools are also displayed on the image as dashed connecting lines. However, when Constant or Average Temperature are selected, dashed lines will not be displayed.
Right-click the dashed connecting line to edit or delete the delta tool.

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