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The THRESHOLD segmentation is conceptually simple. All pixels above the threshold are included in the segment. Sometimes it is helpful to segment at several threshold levels at once. This can easily be realized by setting the number in the Thresholds field accordingly, select More, and enter the threshold values in the appearing Set dialog.
In the example below, three segments of decreasing volume will be generated at thresholds 306.3, 561.55 and 816.8. During visualization, the user can show or hide each of the segments separately.
