DAVID SLS-1, Getting Started Manual

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Scanning with
Scanning with Scanning with
Scanning with DAVID
DAVID DAVID
DAVID
Launch DAVID by starting “Start_DAVID3“ on your DAVID USB key.
On the left side you can see the expandable main menus. Each menu is dedicated to one of the following work
steps, which you will usually walk through from top to bottom.
For the individual work steps, different camera and/or projector settings may be optimal. For example,
Camera Calibration may require a different Exposure Time, or Texturing may require a darker projector
setting. The respective controls are available at all times, and DAVID will remember and restore the settings
separately for each work step – depending on which menu is currently expanded.
Our software is developed and improved continuously. Therefore, please use the automatic update. All
updates within versions 3.x are free of charge.
This printed manual refers to version 3.4 of the software and may already be out of date. Please also read our
detailed and always up-to-date online manual, which you can find on
http://www.david-laserscanner.com/ .
Calibration of the Scanner
Calibration of the Scanner Calibration of the Scanner
Calibration of the Scanner
One advantage of the SLS-1's modular setup is that its size can be adjusted to very different object sizes.
Therefore, calibration (measurement of the current hardware setup in the DAVID software) is required,
allowing the software to obtain undistorted 3D data at the correct scale. We use a calibration corner as
reference, whose properties are known precisely.
The three steps, hardware setup, camera calibration and projector calibration, must be carried out in the
following order.
1. Menu “ Hardware Setup “: Adjustment and settings of projector and camera
1. Select setup type “Structured Light Setup“.
2. Choose the correct “Screen ID“ such that the stripe pattern is projected by the projector.
3. Place the scanner in front of the scanned object and adjust the projector's position and direction so
that its projection illuminates the scanned surface – not less, but also not much more.
4. Use the projector's focus ring to adjust sharpness, such that the black and white stripes are well
focused on the object surface.
5. Below “Camera”, select your camera (DAVID-CAM-2-M). You will see the live view. If necessary,
roughly adjust the camera's mechanic aperture and focus ring.
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