Segmentation Panel

The segmentation panel is the main panel used for segmentation. It allows creating models, modifying materials and selecting different segmentation tools.

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Contents

What are the Models

Model is a matrix with dimensions equal to those of the opened Image dataset: i.e. [ 1:imageHeight, 1:imageWidth, 1:imageThickness ]. The Model consists of Materials, each element of the Model matrix can belong only to a single material or to an exterior. So it is not possible to have several materials above the same pixel of the Image overlapping each other. Each material in the Model matrix is encrypted with own index:

Model = [1 1 0 0; 1 1 0 0; 0 0 2 2; 0 0 2 2];
Model
Model =

     1     1     0     0
     1     1     0     0
     0     0     2     2
     0     0     2     2

In this example, the shown matrix represents a Model with 2 materials encrypted with 1 (the upper left corner) and 2 (the lower right corner) for the Image of 4x4 pixels.

The Create button

Starts a new model. The existing Model layer will be removed.

Whenever is possible is is recommended to use models with 63 materials.
A short introduction about materials with more than 255 materials is available from here:
https://youtu.be/r3lpmWyvrJU
Also see more about types of model on the Menu->Models page

The Load button

Loads model from the disk. The following formats are accepted:

Alternatively it is possible to use the Menu->Models->Load model or directly drag-and-drop *.model file to the Image View panel.

The +, -, and E buttons

The Filled/Contour combo box

This combo box modifies visualization of materials in the Image View panel.

The Segmentation table

The Segmentation table displays the list of materials of the model.

A brief demonstration is available in the following video:
https://youtu.be/_iwQI2DIDjk

The segmentation table has 3 columns:

The Ctrl+A and Alt+A shortcuts can be used to highlight selected in the Segmentation table material. The Ctrl+A shortcut selects objects only on the shown slice, while Alt+A does that for the whole dataset. The selection is sensitive to the Fix selection to material and the Masked area switches.

The Fix selection to material check box

This check box ensures that all segmentation tools will be performed only for material selected in the table.

The Masked area checkbox

This check box ensures that all segmentation tools will be limited only within the masked areas of the image.

The "D" checkbox, to select fast access tools

This checkbox marks the favorite selection tools that are selected using the 'D' key shortcut. The chosen fast access tools are highlighted with orange background in the Selection type popup menu. Any tool can be selected as a favorite one.

Segmentation tools combo box

This combo box hosts different tools for the segmentation. See more here.

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