tf.keras.layers.RandomRotation

A preprocessing layer which randomly rotates images during training.

Inherits From: Layer, Operation

tf.keras.layers.RandomRotation(
    factor,
    fill_mode='reflect',
    interpolation='bilinear',
    seed=None,
    fill_value=0.0,
    value_range=(0, 255),
    data_format=None,
    **kwargs
)

Used in the notebooks

Used in the guide	Used in the tutorials
Working with preprocessing layers	Image classification Data augmentation Transfer learning and fine-tuning Retraining an Image Classifier

This layer will apply random rotations to each image, filling empty space according to fill_mode.

By default, random rotations are only applied during training. At inference time, the layer does nothing. If you need to apply random rotations at inference time, pass training=True when calling the layer.

Input pixel values can be of any range (e.g. [0., 1.) or [0, 255]) and of integer or floating point dtype. By default, the layer will output floats.

Note: This layer is safe to use inside a tf.data pipeline (independently of which backend you're using).

Input shape
3D	unbatched) or 4D (batched) tensor with shape (..., height, width, channels), in "channels_last" format

Output shape
3D	unbatched) or 4D (batched) tensor with shape (..., height, width, channels), in "channels_last" format

Args
factor	a float represented as fraction of 2 Pi, or a tuple of size 2 representing lower and upper bound for rotating clockwise and counter-clockwise. A positive values means rotating counter clock-wise, while a negative value means clock-wise. When represented as a single float, this value is used for both the upper and lower bound. For instance, factor=(-0.2, 0.3) results in an output rotation by a random amount in the range [-20% * 2pi, 30% * 2pi]. factor=0.2 results in an output rotating by a random amount in the range [-20% * 2pi, 20% * 2pi].
fill_mode	Points outside the boundaries of the input are filled according to the given mode (one of {"constant", "reflect", "wrap", "nearest"}). reflect: (d c b a | a b c d | d c b a) The input is extended by reflecting about the edge of the last pixel. constant: (k k k k | a b c d | k k k k) The input is extended by filling all values beyond the edge with the same constant value k = 0. wrap: (a b c d | a b c d | a b c d) The input is extended by wrapping around to the opposite edge. nearest: (a a a a | a b c d | d d d d) The input is extended by the nearest pixel.
interpolation	Interpolation mode. Supported values: "nearest", "bilinear".
seed	Integer. Used to create a random seed.
fill_value	a float represents the value to be filled outside the boundaries when fill_mode="constant".

Attributes
input	Retrieves the input tensor(s) of a symbolic operation. Only returns the tensor(s) corresponding to the first time the operation was called.
output	Retrieves the output tensor(s) of a layer. Only returns the tensor(s) corresponding to the first time the operation was called.

Methods

from_config

View source

@classmethod
from_config(
    config
)

Creates a layer from its config.

This method is the reverse of get_config, capable of instantiating the same layer from the config dictionary. It does not handle layer connectivity (handled by Network), nor weights (handled by set_weights).

Args
config	A Python dictionary, typically the output of get_config.

Returns
A layer instance.

symbolic_call

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symbolic_call(
    *args, **kwargs
)