Parameter

Description

Segmentation Type

Selects the type of segmentation.

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Manual

Uses a manual threshold by clicking on the regions in the image that you want to segment, or by using the Threshold control displayed below.

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Semantic

Uses machine learning to automatically segment the structures. The use of AI-segmentation requires an installation of the 3rd party Python Tools during the installation of ZEN.

Segm. Area

Only visible if Manual is selected.
Selects which area is segmented.

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Structure

Segments the structure(s) in the image.

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Background

Segments only the background of the image.

Threshold

Only visible if Manual is selected.
Sets the threshold for the variance calculation.
If Structure is selected, it sets the threshold for the minimum variance of the structures in your image, i.e. all areas which have a variance value higher than the specified threshold will be segmented.
If Background is selected, it sets the threshold for the maximum variance of the background, i.e. all areas which have a variance value lower than the specified threshold will be segmented.

Kernel Size

Only visible if Manual is selected.
Sets the kernel size to calculate the variance value of one pixel with the neighboring pixels.

AI Model

Only visible if AI-based is selected.
Selects the model for segmentation from a dropdown which includes your own trained and imported networks.

Model Class

Only visible if AI-based is selected.
Selects the model class used for segmentation.

Min. Confidence

Only visible if AI-based is selected.
Sets the minimum confidence in % for the prediction of every object.

Min. Object Size

Sets the minimum size in pixel that an object must have to be segmented.

Fill all Holes

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On

Fills all holes in the segmented objects irrespective of their size.

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Off

Fills holes in the segmented objects only if they are smaller than the specified Min. Hole Area.

Min. Hole Size

Sets the minimum area in pixel for the holes in the detected objects. The input is synchronized with Min. Object Size, which cannot be smaller than Min. Hole Size.