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In Fig. 5.14 two bars are shown, but the number of bars can be also 3 or 4 (determined by
selecting the desired value from the “Number of bars” field). By using 3 bars one can e.g.
assign the actual grayscale range of 0…50 to be displayed on screen as grayscale range
0…150 and the actual grayscale range of 51…150 to be displayed on screen as grayscale
range 151…255. With 4 bars even more detailed adjustment of grayscale ranges is possible.
Once the adjusted image looks optimal, the settings can be saved and the window can be
closed by pressing “Set & Exit” button.
5.2.6 Guidelines
Up to four horizontal and up to four vertical guidelines can be drawn on top of the image.
These guidelines can be used for e.g. ensuring that the welding torch follows the correct path.
Together with the calibration feature (described in Section 5.2.7 in more detail) guidelines
also enable measurements from the images in real time.
In order to add horizontal guidelines, click “X” button (see Fig. 5.10H). Vertical guidelines
can be added by clicking the “Y” button, respectively. The guideline options (Move, Lock and
Delete; Delete is only available for the latest horizontal and vertical line) can be selected by
pressing the left mouse button on top of the guideline. Fig. 5.15 shows the screen with four
guidelines.
Fig. 5.15. Guidelines.
Guideline properties can be adjusted by selecting “Guideline and grid properties…” under
“Settings” menu. This will open the guideline and grid properties window (Fig. 5.16).