Defining labels

Overview

Creating high-quality training data requires clean and well-thought labels.

AnnoStation supports the following two types of labels:

Type	Description
Segmentation	Segmentation is typically used to train the model to recognize the precise shape of an object. It is used to label each pixel of an image with a corresponding class of what is being represented.
Vector	Vector is often used to detect a certain object within an image. It is used to label the outline of shapes of an object with a corresponding class of what is being represented. AnnoStation supports the following types of vector objects: Point Bounding Box Polygon Path

For vector labels, you can also define custom attributes for additional classification.

Create a new label

1. Go to the Annotation Labels tab.

2. Click on Add label.

3. Provide a name and choose a color.

4. Select if the label is Segmentation or Vector.

   • For vector labels, you can define custom attributes.

5. Select Create Label.

Custom attributes

When you want to classify an annotated object, using custom attributes is a powerful way.

AnnoStation supports the following types of custom attributes:

Type	Description
Single Text	Annotators classify an object using free texts.
Radio button	Annotators choose between a set of options. Annotators can choose one option. You can include "Other" as an option, and Annotators can type a short answer.
Checkbox	Annotators choose between a set of options. Annotators can choose more than one option. You can include "Other" as an option, and Annotators can type a short answer.
Dropdown	Annotators choose between a set of options. Annotators can choose one option. You can include "Other" as an option, and Annotators can type a short answer.

To add custom attributes:

1. Against vector labels, select Add attribute.

2. Provide a name of the attribute, and select the type.

3. Add response options (if applicable for your attribute type).

4. Include "Other" as an option if desired by selecting Write-in Choice.

5. To add more attribute, click Add attribute.

Modify Labels

You can modify labels, however make sure you are certain about the action as it will impact all existing annotation associated with the label.

To modify a label, go to the label you want to modify, and select the pencil icon on the left.

• Changing the name or color will update the existing annotations.

• Deleting attributes or options will remove existing attributes or values.

• Changing the type of an attribute may result in removing existing values if it is not possible to preserve.

Delete Labels

You can delete labels, however make sure you are certain about the action as it will delete all existing annotations associated with the label and it cannot be reversed.

To delete a label, go to the label you want to delete, and select the trash bin icon on the left.