Labelbox documentation

Images

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The Tools menu contains all of the object classes available in the ontology. For large ontologies, it can be useful to filter the object classes. You can do so by typing the object name in the search bar.

The Objects menu lists every annotation instance. For example, if there are two birds in the image and you would like to label them both as "bird", you can create multiple instances of the "bird" annotation by selecting the annotation type from the Tools menu and drawing the annotation on the image. Doing so would create two separate "bird" annotations in the Objects menu.

Bounding box

Bounding boxes are created by marking the two opposite corners of a box.

bounding-box-images.png

To create a Bounding box annotation, click once to create one corner and click again to complete the annotation.

To adjust the size of the Bounding box, drag any of the corners.

To adjust the position of the annotation, simply drag and drop it anywhere on the image.

The easiest way to remove the Bounding box annotation from the image is to select it and hit the backspace key.

Polygon

The Polygon tool is used to create geometric annotations by drawing lines between points.

polygon-images.png

To create a Polygon annotation, create as many points as you need and click the first point again to complete the shape.

To adjust the shape of the Polygon, simply drag any of the points.

The easiest way to delete a Polygon is to select the shape then use the backspace key to remove.

Polyline

Polyline annotations are continuous lines made of one or more line segments and the entire line is treated as one object. Polylines are typically used to annotate open shapes since they don’t have to be closed as polygons do.

polyline-images.png

To create a Polyline annotation, draw a series of points then click the last point again to complete the shape.

To adjust the shape of the annotation, drag any of the points.

The easiest way to remove a Polyline annotation from the image is to select the annotation and hit the backspace key.

When you select a polyline annotation, any nested classifications will appear in the left panel.

Point

The point tool is used to annotate a single x, y coordinate in an image.

point-images.png

To create a Point annotation, select the Point class from the Tools menu and click anywhere on the image.

To adjust the position of the Point, simply drag and drop the annotation.

The easiest way to remove a Point annotation is to select it and hit the backspace key.

Image classification

The 4 classification types are Radio, Checklist, Dropdown, and Free-form text. Classifications can be at the global level or nested within an object depending on how your project's ontology is configured.

classification-types.png

The easiest way to delete a classification annotation is to click on the x that appears when you hover over the classification answer in the left panel.