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Rollout Panorama
Hardware Setup
For a rollout, the camera is fixed to a tripod and the stepper stage unit is placed on a firm, non-
skid surface in such a manner that it will not turn as the motor is activated. A flat platform is attached
to the stage armature then mounted to the stepper motor stage. e subject is positioned in the
center of the platform such that the center of the object is in line with the center of the stepper motor
stage. e camera is adjusted to put the center of the object in the exact center of the camera’s image
area.
Software Operation
A rollout image is very dependent on the
setup to maintain a square aspect ration in the
final image. ere are several ways to accomplish
this. e first method is to enter the appropriate
values into the Object Height and Object Diam
-
eter fields. is method depends on the object
filling the vertical field of view exactly.
If the object does not completely fill the
field of view, then a way to specify the vertical
image height must be used. is can be accom
-
plished by using the crop tool to set a cropped
region whose height exactly corresponds to the
height of the object in the preview and whose width is the entire width of the prescan. en check
the Crop box. e aspect ratio will be calculated and the preview image resized to the calculated
aspect ratio.
Another technique for calculating the rollout values is to perform a prescan, then select a region
with the crop tool that is square on the object. en click the Square-It-Up button (the fancy button
below the Crop checkbox). e preview image will be resized and the parameters will be calculated to
make the selected region square in the final image.