In a Project, Categories are the individual objects, features, or characteristics you want to build a computer vision model to identify. So, for example, if you were building a model to differentiate cats vs. dogs in pictures, your Project would have two Categories: cat, dog.
Create and View Categories in a Project
To create a new Category:
Go to the Annotate page of the Project and scroll down to the What's Being Annotated box. From here, you can see any Categories that you've already attached to this Project and add new ones.
Click the Manage categories link, in green box, to open the Category Manager.
Within the Category Manager, you can see the list of all Categories created within your account. This list includes all Categories across all Projects.
Click Add Category to create a new Category.
Give your Category a name. Keep it short, but clear and descriptive.
Note: If what you're creating is actually a subcategory of another Category, use the Category Nesting field to select the "parent" Category this new one will fall under.
Next, select a label type and color. Each Category can have only one label type (e.g. polygon).
Each label type corresponds to the type of computer vision architecture you selected for your project so make sure to create label types for your categories that correspond to the CV architecture.
CV & Label Type Key:
Segmentation Architecture | Polygon, Polyline, or Rotated Rectangle |
Object Detection Architecture | Rectangle or Rotated Rectangle |
Classification Architecture | Classification |
KeyPoint Architecture | Keypoint |
7. Then, you'll want to enter instructions for this particular Category. Use the rich text editor to add bullets, numbered lists, or even images to help illustrate how someone should annotate this Category when they come across it in your media!
9. Press create!
10. Your new category has been created and now you’ll need to add it to your project by searching the name in the search bar of the “What’s Being Annotated Box”
11. Then press Update, and your category will be added to your project.
Note: if you want to add a category mid-way through annotation, you will erase everything labeled thus far. To avoid this, add all your categories before you start your project.
**However, we understand that mid-way through a project, mission objectives may change, and you need to add in new categories. If you need to do this, you will need to export your current labels and build a new project, we cover this more in-depth in another article.