DAVID SLS-2 Manuel d'utilisateur télécharger pdf (Page 9)

2. Menu “ Calibration “

1. Select a calibration pattern size which fits to the object (see table on page 3). Set up the calibration

corner at precisely 90°, using the mounting tracks. For starters, the pattern should be flapped to

the inside, while advanced users may be able to reduce reflections with a concave corner setup.

2. Remove the object and set up the scanner and the calibration corner in front of each other, with

approx. the same distance as the object before. The projection and camera image should be well

focused.

The camera image must show at least the 6 ring markers and a few dot markers. The whole camera

image should be filled with around 15 to 70 calibration markers, and the camera should not able to

look past the calibration boards.

You can move, rotate and tilt the scanner as a whole, but you should not change anything above the

red mounting rack.

3. Enter the scale size of the calibration pattern at “Calibr. Scale”. You can find the number printed on

the panels right next to the respective pattern.

4. Check the camera image again. In those areas that show the wave patterns, the red intensity curves

must not be cut off at the blue borders.

If the scanned object is significantly darker than the white calibration panels, the sine waves will be

distorted now. Reduce the “Projector Brightness” slider to correct this.

The camera image should look approx. like the following:

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DAVID SLS-2 Manuel d'utilisateur Page 9