Classes
Step 2 Classes
This step allows the user to create classes that are needed to be used during annotation.
Name
Name of the class to be shown in the output data.
Display Name
This is the display name that is shown to the annotators on the tool.
Abbreviated Name
Abbreviated name of the class to be shown in the visualization tool, especially if the name of the class is too long.
Drawing Tool
Drawing tool(s) to be used to select areas or points of the object belonging to this class. This is a multiselect dropdown.
Available drawing tools are:
Polygon (3D)
Draw a boundary with more than 3 sides around the points of an object in the point cloud. For example, Buildings
Polyline
Draw a line having a start and an endpoint with infinite joints/ nodes. For example, Lane markings
Cuboid
Draw a 3D Cuboid to define the dimension and volume of an object. For example, Car
Dynamic Dimension (Cuboid)
Annotation dimension is same across the batch or can vary frame by frame. This option is available when the cuboid class' Has Instance is toggled on.
Polygon2D
Draw a boundary with more that 3 sides around an object in an image
Rectangle
Draw a rectangle around an object in an image
Truncate
The 2D box that extends beyond the image is auto-truncated. Hence when disabled, the dimension output does not change when the object is partially visible
Keypoint with vertical line
Allows annotator to mark a keypoint within a 2D Box
Edge Length Constraint
Add restrictions like min and max length of the 2D Box
Has Instances
Instance to be toggled on if there are more than 1 objects under the same class name present in a frame. Each instance of the class is represented by a unique identifier. For example, car_1, car_2, etc.
Color
Color to be used to draw objects of this class. Users can select from the color palette or provide a HEX code.
All the created classes show up on the left rail as shown below:
Note: The classes can be deleted and edited as required. This modification can be done only when the recipe is still in draft and has not been published yet.
Click on ‘Save Changes’ at the bottom right for each class once details have been added/modified, before moving onto the next class.
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