def from_json(cls, data, project_meta: ProjectMeta):
'''
The function from_json convert Label from json format to Label class object. If there is no ObjClass from
input json format in ProjectMeta, it generate RuntimeError error.
:param data: input label in json format
:param project_meta: ProjectMeta class object
:return: Label class object
'''
obj_class_name = data[LabelJsonFields.OBJ_CLASS_NAME]
obj_class = project_meta.get_obj_class(obj_class_name)
if obj_class is None:
raise RuntimeError(
f'Failed to deserialize a Label object from JSON: label class name {obj_class_name!r} '
f'was not found in the given project meta.')
if obj_class.geometry_type is AnyGeometry:
geometry_type_actual = GET_GEOMETRY_FROM_STR(
data[GEOMETRY_TYPE] if GEOMETRY_TYPE in
data else data[GEOMETRY_SHAPE])
geometry = geometry_type_actual.from_json(data)
else:
geometry = obj_class.geometry_type.from_json(data)
return cls(geometry=geometry,
obj_class=obj_class,
tags=TagCollection.from_json(data[LabelJsonFields.TAGS],
project_meta.tag_metas),
description=data.get(LabelJsonFields.DESCRIPTION, ""))
def from_json(cls,
data,
project_meta: ProjectMeta,
key_id_map: KeyIdMap = None):
'''
The function from_json convert PointcloudObject from json format to PointcloudObject class object. Raise error if object class name is not found in the given project meta
:param data: input PointcloudObject in json format
:param project_meta: ProjectMeta class object
:param key_id_map: KeyIdMap class object
:return: PointcloudObject class object
'''
obj_class_name = data[LabelJsonFields.OBJ_CLASS_NAME]
obj_class = project_meta.get_obj_class(obj_class_name)
if obj_class is None:
raise RuntimeError(
f'Failed to deserialize a object from JSON: class name {obj_class_name!r} '
f'was not found in the given project meta.')
object_id = data.get(ID, None)
existing_key = None
if object_id is not None and key_id_map is not None:
existing_key = key_id_map.get_object_key(object_id)
json_key = uuid.UUID(data[KEY]) if KEY in data else None
if (existing_key
is not None) and (json_key
is not None) and (existing_key != json_key):
raise RuntimeError(
"Object id = {!r}: existing_key {!r} != json_key {!r}".format(
object_id, existing_key, json_key))
if existing_key is not None:
key = existing_key
elif json_key is not None:
key = json_key
else:
key = uuid.uuid4()
if key_id_map is not None and existing_key is None:
key_id_map.add_object(key, object_id)
class_id = data.get(CLASS_ID, None)
labeler_login = data.get(LABELER_LOGIN, None)
updated_at = data.get(UPDATED_AT, None)
created_at = data.get(CREATED_AT, None)
return cls(obj_class=obj_class,
key=key,
tags=VideoTagCollection.from_json(
data[LabelJsonFields.TAGS], project_meta.tag_metas),
class_id=class_id,
labeler_login=labeler_login,
updated_at=updated_at,
created_at=created_at)
def from_imgaug(cls,
img,
ia_boxes=None,
ia_masks=None,
index_to_class=None,
meta: ProjectMeta = None):
if ((ia_boxes is not None) or (ia_masks is not None)) and meta is None:
raise ValueError("Project meta has to be provided")
labels = []
if ia_boxes is not None:
for ia_box in ia_boxes:
obj_class = meta.get_obj_class(ia_box.label)
if obj_class is None:
raise KeyError(
"Class {!r} not found in project meta".format(
ia_box.label))
lbl = Label(
Rectangle(top=ia_box.y1,
left=ia_box.x1,
bottom=ia_box.y2,
right=ia_box.x2), obj_class)
labels.append(lbl)
if ia_masks is not None:
if index_to_class is None:
raise ValueError(
"mapping from index to class name is needed to transform masks to SLY format"
)
class_mask = ia_masks.get_arr()
# mask = white_mask == 255
(unique, counts) = np.unique(class_mask, return_counts=True)
for index, count in zip(unique, counts):
if index == 0:
continue
mask = class_mask == index
bitmap = Bitmap(data=mask[:, :, 0])
restore_class = meta.get_obj_class(index_to_class[index])
labels.append(Label(geometry=bitmap, obj_class=restore_class))
return cls(img_size=img.shape[:2], labels=labels)
def from_json(cls,
data,
project_meta: ProjectMeta,
key_id_map: KeyIdMap = None):
'''
The function from_json convert VideoObject from json format to VideoObject class object. Raise error if object class name is not found in the given project meta
:param data: input VideoObject in json format
:param project_meta: ProjectMeta class object
:param key_id_map: KeyIdMap class object
:return: VideoObject class object
'''
obj_class_name = data[LabelJsonFields.OBJ_CLASS_NAME]
obj_class = project_meta.get_obj_class(obj_class_name)
if obj_class is None:
raise RuntimeError(
f'Failed to deserialize a object from JSON: class name {obj_class_name!r} '
f'was not found in the given project meta.')
key = uuid.UUID(data[KEY]) if KEY in data else uuid.uuid4()
if key_id_map is not None:
key_id_map.add_object(key, data.get(ID, None))
class_id = data.get(CLASS_ID, None)
labeler_login = data.get(LABELER_LOGIN, None)
updated_at = data.get(UPDATED_AT, None)
created_at = data.get(CREATED_AT, None)
return cls(obj_class=obj_class,
key=key,
tags=VideoTagCollection.from_json(
data[LabelJsonFields.TAGS], project_meta.tag_metas),
class_id=class_id,
labeler_login=labeler_login,
updated_at=updated_at,
created_at=created_at)