Source code for encord.utilities.label_utilities

#
# Copyright (c) 2020 Cord Technologies Limited
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from encord.constants.enums import DataType
from encord.constants.string_constants import *
from encord.orm.label_row import LabelRow


[docs]def construct_answer_dictionaries(label_row): """ Adds answer object and classification answer dictionaries from a label row if they do not exist. Integrity checks are conducted upon saving of labels. Args: label_row: A label row. Returns: LabelRow: A label row instance with updated answer dictionaries """ label_row = LabelRow(label_row) # Cast to label row ORM data_type = label_row.data_type data_units = label_row.data_units object_answers = label_row.object_answers classification_answers = label_row.classification_answers for du in data_units: # Iterate over data units in label row data_unit = data_units[du] if LABELS in data_unit: labels = data_unit.get(LABELS) if data_type in {DataType.IMG_GROUP.value, DataType.IMAGE.value}: # Go through images items = labels.get(OBJECTS) + labels.get(CLASSIFICATIONS) add_answers_to_items(items, classification_answers, object_answers) elif data_type in (DataType.VIDEO.value, DataType.DICOM.value): for frame in labels: # Go through frames items = labels[frame].get(OBJECTS) + labels[frame].get(CLASSIFICATIONS) add_answers_to_items(items, classification_answers, object_answers) label_row[OBJECT_ANSWERS] = object_answers label_row[CLASSIFICATION_ANSWERS] = classification_answers return label_row
# --------------------------------------------------------- # Helper functions # ---------------------------------------------------------
[docs]def add_answers_to_items(items, classification_answers, object_answers): """ If object_hash (uid) or classification_hash (uid) are not in answer dictionaries, add key entry with empty classification list. """ for item in items: if OBJECT_HASH in item: object_hash = item.get(OBJECT_HASH) if object_hash not in object_answers: object_answers[object_hash] = { OBJECT_HASH: object_hash, CLASSIFICATIONS: [], } if CLASSIFICATION_HASH in item: classification_hash = item.get(CLASSIFICATION_HASH) if classification_hash not in classification_answers: classification_answers[classification_hash] = { CLASSIFICATION_HASH: classification_hash, CLASSIFICATIONS: [], }