Rotation

tomni.json_operations.rotate_json(json_object: dict, angle: int, img_shape: Union[list, tuple]) → dict[source]

Rotate a JSON object (ellipse or polygon) by 0, 90, 180, or 270 degrees.

Parameters

  • json_object (dict) – JSON object following the standard AxionBio format (ellipse or polygon).

  • angle (int) – The angle of rotation. Choose from 0, 90, 180, or 270 degrees.

  • img_shape (list or tuple) – The shape of the image related to the JSON object, represented as (width, height).

Returns

A new JSON object with the specified rotation.

Return type

dict

Raises

ValueError – If the angle is not one of 0, 90, 180, or 270 degrees.