mindspore.dataset.vision.AutoAugment

class mindspore.dataset.vision.AutoAugment(policy=AutoAugmentPolicy.IMAGENET, interpolation=Inter.NEAREST, fill_value=0)[源代码]

Apply AutoAugment data augmentation method based on AutoAugment: Learning Augmentation Strategies from Data. This operation works only with 3-channel RGB images.

Parameters

  • policy (AutoAugmentPolicy, optional) –

    AutoAugment policies learned on different datasets (default=AutoAugmentPolicy.IMAGENET). It can be any of [AutoAugmentPolicy.IMAGENET, AutoAugmentPolicy.CIFAR10, AutoAugmentPolicy.SVHN]. Randomly apply 2 operations from a candidate set. See auto augmentation details in AutoAugmentPolicy.

    • AutoAugmentPolicy.IMAGENET, means to apply AutoAugment learned on ImageNet dataset.

    • AutoAugmentPolicy.CIFAR10, means to apply AutoAugment learned on Cifar10 dataset.

    • AutoAugmentPolicy.SVHN, means to apply AutoAugment learned on SVHN dataset.

  • interpolation (Inter, optional) –

    Image interpolation mode for Resize operator (default=Inter.NEAREST). It can be any of [Inter.NEAREST, Inter.BILINEAR, Inter.BICUBIC, Inter.AREA].

    • Inter.NEAREST: means interpolation method is nearest-neighbor interpolation.

    • Inter.BILINEAR: means interpolation method is bilinear interpolation.

    • Inter.BICUBIC: means the interpolation method is bicubic interpolation.

    • Inter.AREA: means the interpolation method is area interpolation.

  • fill_value (Union[int, tuple], optional) – Pixel fill value for the area outside the transformed image. It can be an int or a 3-tuple. If it is a 3-tuple, it is used to fill R, G, B channels respectively. If it is an integer, it is used for all RGB channels. The fill_value values must be in range [0, 255] (default=0).

Raises

  • TypeError – If policy is not of type AutoAugmentPolicy.

  • TypeError – If interpolation is not of type Inter.

  • TypeError – If fill_value is not an integer or a tuple of length 3.

  • RuntimeError – If given tensor shape is not <H, W, C>.

Supported Platforms:

CPU

Examples

>>> from mindspore.dataset.vision import AutoAugmentPolicy, Inter
>>>
>>> transforms_list = [vision.Decode(), vision.AutoAugment(policy=AutoAugmentPolicy.IMAGENET,
...                                                        interpolation=Inter.NEAREST,
...                                                        fill_value=0)]
>>> image_folder_dataset = image_folder_dataset.map(operations=transforms_list,
...                                                 input_columns=["image"])