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Detecting cells (Cellpose-based Segmenter)

Introduction

This guide explains you how to detect cells using the pipeline with the Cellpose-based Segmenter operation. The operation allows you to run a segmentation operation using a pretrained cellpose model on any dataset. You can use this operation in an analysis pipeline and in combination with all other analysis operations in the software.

Activating the Sample Pipeline

  1. In the Shortcut Toolbar, click Analysis Panel .
  2. In the Sample Pipelines list, double-click the Detect cells Using Cellpose-based Segmenter pipeline.
  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 is displayed. When clicking on it, the option Open How to appears.

Pipeline operations layout

The following operations are part of the pipeline.

Input ROI

This operation allows to select the region of interest (ROI). ROI defines the dataset subarea that will be processed and analyzed by the pipeline.

Input ROI parameters

Parameter

Description

ROI

Sets the processing and analysis target space.

Current View

The selected Z plane and the viewer area are processed.

Current Plane

The selected Z plane is processed (XY).

Current Time Point

The selected time point is processed (XYZ).

Current Image Set

The complete dataset (XYZ and time) is processed.

Custom

Allows to mix the previous methods.
Note: Use the Custom option during the pipeline setting and testing. Set a sub volume (XY, Planes, Time Points, channels) of your dataset on which perform the trial. This will speed up the setting process.

Channels

Sets the processing and analysis target channels. Selecting a single channel, all the operations in the pipeline will be forced to use it.

Scaling

Sets the scaling of the dataset, which reduces it size. The measurements will not be modified by the scaling factor

Crop input data

Sets the limitation of the data used for the calculation to only the cropped selection defined above. If this option is not selected, the entire image set is used for the calculation.

Additional Parameters

Additional settings for Input ROI expand, when you click in the operation.

Parameter

Description

Bounds

Sets the analysis area edges. The whole XY bounds, the viewing area or a custom space can be applied.

Planes

Sets the analysis planes range. A single plane, a range of planes or the whole stack can be selected.

Time Points

Sets the analysis time points range. A single time pint, a range of time points or the whole movie can be selected.

Cellpose-Based Segmenter

This operation detects automatically cells using pretrained cellpose models.

Executing the pipeline

You can execute the pipeline step by step or in a single run. To do this, use the executing buttons in the Pipeline toolbar.

Executing Buttons in the Pipeline toolbar
Executing Buttons in the Pipeline toolbar

Executing in a single run

As alternative to executing step by step, execute the pipeline in a single run.

  1. To run the whole pipeline, click .
  2. To stop the pipeline execution, click .

Viewing the results

  1. If not already visible, open the Objects dialog. In Shortcut Toolbar, click Objects table .
  2. Measurements are now visible in the objects table.
  3. To add or remove table columns, click Feature Columns...
    For more information, refer to the Online Help (F1).

Modifying the current pipeline

You can modify the pipeline to adapt to another datasets. Therefore, all the pipeline parameters should be set according to the new dataset features.

Previewing the results

For all operations the preview is available in 2D, for some also in 3D.

  1. Switch from 2D Viewer to 4D Viewer in the Viewer Type Switch.
  2. To preview the operation results, click Preview in the Operation toolbar.

Use the Navigator panel in the Panel Sidebar to select the preview z plane and/or time points.

Adjusting the operations

The parameters of each operation are described here: Pipeline operations layout

  1. You have opened the pipeline.
  1. Go to the operation you want to change.
  2. Set the appropriate parameters as desired.
  3. Execute the pipeline (see Executing the pipeline).
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