Chapter 12 On-Screen Measurement147Adding Annotationsand Measuring12.2 Measuring on an ImageMeasurement allows you to measure distance, angle, a diameter of a circle or area of a polygon on an image.Configuring calibrationBefore starting the measurement, make sure that you have selected the right calibration setting. If you change the currentsetting to another after starting the measurement, the results obtained to that point are lost.Measuring on an live imageWhen measurement is performed on a live image, the image and measurement result may be misaligneddepending on the status of the object. In this case, use the [FREEZE] button to take a still image and startmeasurement.12.2.1 Measuring Distance between Two PointsYou can measure the distance between the two points specified on an image.1 Display the toolbar.2 Press the [COLOR] button to select color ofmeasurement results.3 Press the [2-POINT DISTANCE MEASUREMENT] button.A blue frame appears around the button.4 Specify two arbitrary points (A and B on the figure) andcheck distance between the two points.If you specify the starting and end points, a measurementline is drawn between them and the distance between thetwo points are shown.5 Repeat step 4 if you want to continue measurement.6 To display or hide the measured result, switch todisplay or hide overlay.You cannot selectively display or hide only the measuredresult. Switch to display or hide the entire overlay.7 To end measurement, press the [2-POINT DISTANCEMEASUREMENT] button to deselect the tool. Measuring Distance between Two PointsUndoing and redoing measurementYou can cancel and redo measurement by pressing the [UNDO MEASUREMENT] or [REDO MEASUREMENT]button respectively.Measurement result display• If the setting of calibration is changed, all measured results are cleared.• The line width and character size of measurement result can be changed on the [TOOL SET: MAIN] screen.• When stylus operation is not easy or accurate positioning is required, mouse operation is recommended. Use acommercially available USB mouse for operation.213, 764
