pretraining_imagenet.py

# coding=utf-8
# Copyright 2021 The OneFlow Authors. All rights reserved.
#
# 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
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from libai.data.datasets.imagenet import ImageNetDataset
from libai.data.structures import Instance


class PretrainingImageNetDataset(ImageNetDataset):
    """ImageNet Dataset in LiBai for Pretraining
    Return:
        images: ImageNet train set images
    """

    def __getitem__(self, index: int):
        data_sample = super().__getitem__(index)
        return Instance(images=data_sample.get("images"))