Calibrations in XVLite only persist for the current image and are not tied to the hardware. Therefore any image requiring measurement must have an object of known size placed in it for calibrating the measurement.
Apteryx, Inc. does not guarantee the accuracy of any calibration/measurement performed in the imaging application.
Before measurements are added in an image, the image should first be calibrated. Images are calibrated by taking a measurement of an object of a known size or length in the image (as shown in the image below) and then providing the actual length or size of the object to determine the images calibration factor for a subsequent measurement to be performed. This method is useful in calibrating images from Cephalometric systems.
Select Calibrate Measurement from the menu bar. The cursor will change into a crosshair with a gear above it.
Place the calibration crosshair at the starting point of the object of known length; single-click on the left mouse button; move the cross-hair to the end-point of the object; and then double-click on the left mouse button.
Non-linear calibrations can be created by left-clicking on mid-points while moving the mouse from point to point. Double-click on the left mouse button at the final end-point.
A 'Calibrate Measurements' pop-up screen will appear. Type in the correct length of the object. Click OK.
This image is now calibrated and any measurement performed will be based off the calibration.
Article Version 1.0 2021.04.09