User manual

2.1 Optical set-up 23

• the approximate framed area;

• the type of master he/she wants to use.

Figure 2.10: Optical head calibration settings.

Once conﬁrmed these choices IDEA starts the Calibration mode as shown in Figure 2.11.The purpose of the

calibration is to acquire a sequence of images to elaborate in order to produce entry data for the procedure

that calculates the scanner’s operational parameters.

Figure 2.11: Calibration mode.

The calibration panel (Figure 2.12) is shown at the center-bottom of the page, and offers the following

features:

• Calibration/ recalibration mode

: allows to carry out either a complete calibration or a recalibration;

the complete calibration determines all the operational parameters and uses at least 9 images; the

recalibration only determines the parameters regarding the orientation of the camera and uses at least

3 images. Recalibration cannot be used if the scanner’s optical setup has been changed.

•

Turn on / Turn off live

: allows to activate and deactivate the visualization of the master

framed by the two cameras;

• Initialize calibration

: starts the acquisition procedure of 3 images of the calibration plate, which

allows to extract the light intensity and framed ﬁeld parameters;

• Grab image pair: captures and elaborates on a pair of images of the calibration master;

• Next pair: goes to the next image pair that needs to be captured;

• Previous pair: goes to the previous image pair that needs to be acquired;