/
User-guided Classifier

Aivia Software

User-guided Classifier

Owned by Tuan Phan
Mar 28, 2025

The Object Classifier supports multiple classification types, including User-guided Classifier, Automatic Classifier, and Phenotyper. This page describes how to use the User-guided Classifier. This type of classifier uses a random forest algorithm to identify unique features (i.e. measurements) for classification.

On this page:

Interface

The User-guided classifier view has two sections: the Gallery and the Classifier bar.


The gallery shows a thumbnail of all objects on the image as well as the thumbnails of any objects that are taught during the current session. The gallery separates the thumbnails by classes indicated by a colored header. You can expand/collapse each class separately.

In the collapsed view, a generic icon (on the right) indicates the number of additional thumbnails/objects that are in the class. Clicking on the generic icon will fully expand the current class and collapse all others.


Classifier bar

The Classifier bar is located at the bottom of the gallery and provides a number of actions for teaching and applying the classifier on the image. 


General usage

Apply a classifier

To apply a classifier, select the classifier to run from the Classifier dropdown menu and click the Apply button in the lower-right corner of the gallery. If the data has existing classifications, applying a classifier will remove the existing classifications and create new ones.

On apply, the classifier will look at each object and assign a class. If you have Color by Class turned on in the Object Settings, the colors of the objects will change in accordance with their assigned categories.

You can also view the objects by class in the Spreadsheet panel as subsets.








Create a new classifier

You will need to have analysis results, such as outlines and surfaces, to use Classifier View. You can generate results using one of the recipes or through manual editing. Tracks are currently not supported.

You can create a new classifier from scratch by clicking on the Create New Classifier  button in the Classifier View toolbar. You will be prompted to enter a name and specify the object type (see right). The general workflow for creating a classifier from scratch is as follows:

  1. Select the object type you wish to analyze using the Classifier View.

  2. Create classes of objects as needed for identifying each phenotype.
  3. Teach the classifier by selecting a few representative objects from each category and adding them to the relevant class gallery; click Teach when you have provided examples from each class.
  4. Update the classifier as needed by adding additional object examples.
  5. Select measurements to use or exclude from the classifier.
  6. Apply the classifier to the image.

More information on how to use the Classifier View can be found in the How to classify objects page.





Related content