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Eclipse Help Reference |
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This tool is used to outline a box on an image.
The drawn box can be used for measuring (see measure) objects within the box
created, for selecting color threshold values for the selected region (see threshold), cropping the selected region of an image
(see crop),
or cutting an area out of an image (see cut). To
measure objects with this tool, threshold an image and then objects within the image
can be outlined with this tool for measuring. It is also possible to create
many boxes on an image (and/or combine with traced regions) before measurements
are executed. (Regions may be removed by selecting Remove all selections or Remove last selection.)
All objects completely within the outline, those
touching the line, or all objects that have a center of gravity within the
outline can be measured depending on how the data options have been set (See Data Options).
Example: When the Trace Tool
has been chosen, move the mouse cursor while holding down the left mouse button,
tracing an object of interest. Releasing the mouse button will close the
object. The line will fly back to the starting point of the trace.
Threshold the image
and then Measure. At this point all of the selected objects
in the field outlined by the ellipse will be measured and a Data Results
dialog box will come up. In the Data Results menu, click on LOG to DDE to send the data to Excel or
the currently connected program supporting Dynamic Data Exchange (see DDE).
This tool will make measurements (without
thresholding) of all the regions placed on an image as long as in the Data Options
section, under Object Policies, Objects Partially inside selection are
set to Cut by selection.
If this function is used as a Visual Basic
routine, Visual C++ routine or macro, the same size box may be applied to new
images repetitively as a mask (or template). Selected regions can be saved as
regions (*.msk files) with the use of the Save current selections option.
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