Rulers, Scanning images – UVP Doc-It Life Science User Manual

Page 53

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Using Image Filters

48

Align an Image

Align tool rotates the grid overlaid on the image so that it can be aligned with vertical/horizontal features
of the image to make it easy for the user to select the # of degrees rotation.


Rulers

Rulers are located at the top and left of each Image window.

The rulers show the width and height of the visible portion of the image either in metric units (if calibrated)
or in pixels (if un-calibrated). When zooming in and out of the image the, software updates the rulers to
show the actual size and position of the visible portion of the image. As the user moves the mouse over
the image, markers show the position on each ruler.

The units are shown in the upper-left corner (see the image above). Pixels (uncalibrated) are abbreviated
"px;" all other values use standard abbreviations. When the rulers are calibrated to a standard measure,
they may change units as zoom is applied to the image detail. For example, an image calibrated in
centimeters may switch to millimeters when zoom is used. The measurements are still completely
accurate; the rulers switch units because they are designed to show a useful number of units at every
point.

Note:

The scale information used by the rulers also is used by

measurement annotations

.

Length measure annotations can be used to see the length of a feature that is not
square to the rulers.

Showing or Hiding the Rulers

Rulers may be hidden or shown individually for each Image window. Hiding the rulers provides
slightly more space in which to view the image.

On the View menu, click View Rulers.

Scanning Images

LS software can acquire images from scanners that supply a TWAIN interface. (Almost all scanners
support TWAIN.) TWAIN helps scanners provide their own software interface during scanning.

Select the Desired Scanner

Choose Image > Scan > Select Scanning Source. The Select Source window will appear.

Select the desired device from the list.

Click Select.

Tip:

The device you select will remain the default until it is changed, even after
rebooting. Generally, if you have only one TWAIN device, it will already be the
default.

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