6
Scanning Operation with Color
6.1
Range and Color Scanning Overview
This section describes a list of typical steps to scan a scene both for range and for color. Details
for acquiring color are covered in section 6.2.
Please read Section 4 fully before scanning.
6.1.1
Scan for range
Place the system in position – connected and running – as discussed in section 4.
Using the ‘geared-column’ on your tripod, elevate the scanner 8 inches (20.3cm).
Note: The camera mount positions the camera’s focal point precisely 8 inches
above the origin point of the laser. By moving the column up 8” for range
scanning, and down 8 inches for image acquisition, all the data is captured from
the same viewpoint. Marking your tripod, or using the supplied 8 inch measuring
bar, will make this procedure quick and easy.
Note: Be sure to tighten the geared-column locking-screw after each change in
position to prevent the scanner or camera from wobbling during acquisition.
Note: Always wear protective eyewear when scanning for range with the
DeltaSphere.
Do the initial scan to acquire range data as described in section 4.
Note: If you are doing multiple scans of the object or scene from different
viewpoints, you must scan both color and range from each tripod position before
moving the tripod to the next location. It doesn’t matter whether you do range or
color first – as long as they are both from the same tripod position.
6.1.2
Adjust and Connect the Camera
Note: These instructions apply to the current shipping camera and lens – the
FujiFilm FinePix S2Pro and Nikon AF Nikkor 14mm lens. Please refer to the
original documentation for your camera and lens set up.
It may be easier to do the first three steps before mounting the camera.
Set the camera to Manual Mode with the dial on the top-left of the camera.
Set the aperture to f22 using the manual ring on the lens so that the ‘22’ lines up with the
dot on the silver ring. (Note: The camera will actually be set to f11 by the SceneVision
software.)
Set the focus by positioning the infinity symbol on the lens’s focus ring so that it lines up
with the color-coded f4 tick mark (the mark should be aligned with the center of the infinity
symbol). In all following steps, be careful not to turn the lens or the images may be out of
focus. You will want to periodically check the focus to see that it hasn’t moved.
Note: This focus will work for most situations. You may wish to adjust the focus
for very close objects.
Lower the tripod 8 inches (and tighten the geared-column locking screw).
Mount the camera on the DeltaSphere as described in Section 5.1.2.
DeltaSphere-3000 3D Scene Digitizer
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