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ZEISS Microscopy Knowledge Base

Detecting small structures (Watershed)

Introduction

This guide explains you how to detect small structures using watershed using the pipeline with the Normalization and Watershed operation. The purpose of the pipeline is to detect objects having almost any shape. The pipeline can be applied to cells, nuclei, or any kind of small particles.

Workflow

Vertical flowchart of four rounded boxes labeled ROI selection → Normalization → Watershed Segmenter → Export data

Activating the Sample Pipeline

  1. In the Shortcut Toolbar, click Analysis Panel Application toolbar with menus File Edit View Data Navigation Objects Analysis Extras Window Help and icon buttons.
    Application toolbar row with menu labels 'File Edit View Data Navigation Objects Analysis Extras Window Help' and icon buttons
  2. In the Sample Pipelines list, double-click the Detect Small Structures Using Watershed Pipeline.
    Analysis panel with '+ New Pipeline' button and Sample Pipelines list highlighting 'Detect Small Structures Using Watershed'
  3. If you have activated a pipeline, it will be replaced by the new one.

You can open the appropriate How to guide. By hovering over a pipeline, this button Analysis Panel button in Shortcut Toolbar is displayed. When clicking on it, the option Open How to appears.

Viewing the results

  1. If not already visible, open the Objects dialog. In Shortcut Toolbar, click Objects table Objects window showing table of Segment # entries and Volume (µm³) column values like 0,051; Items: 743 .
  2. Measurements are now visible in the objects table.
    Objects window showing a table of Segment names (e.g., Segment #6172) and Volume, Volume (µm³) values
  3. To add or remove table columns, click Feature Columns...
    For more information, refer to the Online Help (F1).
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