In many cases, it is useful to have more human-judged metadata on top of each annotation for a given task, for example, measuring the occlusion-level of all vehicles in an image.
To achieve this, we support
annotation_attributes, an object representing additional attributes that you'd like to capture per image annotation.
You may use
annotation_attributes to define categorical attributes, numerical attributes, angle attributes, or text attributes for each annotation. You define the type of the attribute using the
type property of the attribute, which is either
text. It defaults to
category. See Annotation Attribute Types below for more details.
The format for
annotation_attributes is an object whose key-value pairs all specify attributes of each annotation that you want to capture. The schema differs slightly based on the type of the attribute: