Vocabulary

Label is a type of an annotated object (e.g. person, car, vehicle, etc.)

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Attribute is a property of an annotated object (e.g. color, model, quality, etc.). There are two types of attributes:

• Unique: immutable and can’t be changed from frame to frame (e.g. age, gender, color, etc.)

  

• Temporary: mutable and can be changed on any frame (e.g. quality, pose, truncated, etc.)

  

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Track is a set of shapes on different frames which corresponds to one object. Tracks are created in Track mode

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Annotation is a set of shapes and tracks. There are several types of annotations:

• Manual which is created by a person
• Semi-automatic which is created mainly automatically, but the user provides some data (e.g. interpolation)
• Automatic which is created automatically without a person in the loop

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Approximation allows you to reduce the number of points in the polygon. Can be used to reduce the annotation file and to facilitate editing polygons.