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Unit tool


Unit button


Use this tool to calibrate your measurements.

  • Click the Unit tool Unit tool button.
  • Identify a line in the image of which the length is known, and then click one end of that line.
  • Click the other end of the line.
  • Enter the real length and select the unit in the dialog box that appears.

    Unit dialog

  • Click the option "Use this as the default calibration" if you want to use this calibration for next images.
  • Click OK.

The length (in pixels) is displayed in the Measurements list window.

When the option Show result after finalizing measurement is selected, then the length is displayed in a small window next to the object.

After you have defined the unit, all previous measurements are recalculated.

A default calibration can also be defined in the options box.



See also