DAVID SLS-2 Manual de usuario descargar pdf (Pagina 8)

5. Below “Camera”, select your camera (DAVID-CAM-3-M). You will see the live view. If necessary,

roughly adjust the camera's mechanic aperture and focus ring.

6. Aim the camera so that it can see the projected pattern on the object. Then fix the ball joint.

If the camera view and/or projector beam obtains much more than the scanned surface, you should

reduce the distance between scanner and object (step 3).

7. The Exposure Time should be set to the same value as the projector frame rate (usually 1/60s),

otherwise the camera image might flicker or pulse when looking at the projection. If it flickers,

adjust the Exposure time.

8. The “Projector Brightness” control should be at maximum in most cases. Only reduce it if a clean,

undistorted sine wave cannot be obtained otherwise.

Adjust the mechanic aperture at the camera's lens. Regard only those image regions that show the

wave patterns: The red intensity curves must be sinusoidal and must not be over- or under-

saturated. In other words, the red sine curve must not be cut off at the blue borders.

Too dark.

→ Increase aperture size

Perfectly adjusted,

sine wave nearly reaches the

blue borders.

Too bright,

Sine wave is cut off (overdriven).

→ Decrease aperture size

9. Look at the object in the camera image. Adjust camera focus (mechanic focus ring) so that the

object and the projected black&white stripes are depicted as sharp as possible.

10. Fasten all screws (projector, ball joint of camera) so that nothing can be dislocated from now on.

The scanner is now optimized for your object (size of scan region, working distance, surface

brightness) and has to calibrated like this.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Sin comentarios

DAVID SLS-2 Manual de usuario Pagina 8