Operating Instructions
Chapter
4
IVC-3D
8011007
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23
Getting Started
The next step is to calculate the total volume of the loaf of bread. In order to do that we
need to have the following:
A Region of Interest (ROI) that defines where in the 3D image the loaf is located
A surface that defines the conveyor belt on which the loaf is placed. This surface is used
as the zero-level when calculating the volume from the height data in the 3D image.
ROI for
the loaf
ROIs for the
conveyor belt
The ROI for the loaf is created by adding a ROI Rectangle tool to the program. We will set
the parameters specifying the ROI later.
25.
Click the
ROI Rectangle
tool on the
ROI
toolbar.
26.
In the dialog box that is displayed, choose
...before current step
and click
OK
.
The ROI Rectangle step is added to the program list.
27.
Add a description to the step, such as “ROI for the loaf”.
The conveyor belt can be found by fitting a surface to areas outside the ROI for the loaf.
This can be done with the following steps:
Two ROI Rectangle tools that specify areas to the left and to the right of the loaf. If the
conveyor belt is not exactly planar we can compensate for this by using two areas.
A ROI Union tool that makes one (discontinuous) ROI out of the two rectangular ROIs.
A Fit Surface tool that creates a surface from the height data inside the two rectangular
ROIs.
28.
Add the following program steps at the end of the program and give them suitable
descriptions:
(ROI Rectangle)
(ROI Union)
(Fit Surface)
(Volume)
We will add the second ROI, specifying the surface to the right, after we have set the
necessary parameters.
Summary of Contents for IVC-3D 200
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