Randomly vary the height of a batch of images during training.
Inherits From: PreprocessingLayer
, Layer
, Module
tf.keras.layers.experimental.preprocessing.RandomHeight( factor, interpolation='bilinear', seed=None, name=None, **kwargs )
Adjusts the height of a batch of images by a random factor. The input should be a 4-D tensor in the "channels_last" image data format.
By default, this layer is inactive during inference.
Arguments | ||
---|---|---|
factor | A positive float (fraction of original height), or a tuple of size 2 representing lower and upper bound for resizing vertically. 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 with height changed by a random amount in the range [20%, 30%] . factor=(-0.2, 0.3) results in an output with height changed by a random amount in the range [-20%, +30%]. factor=0.2results in an output with height changed by a random amount in the range [-20%, +20%]. </td> </tr><tr> <td> interpolation</td> <td> String, the interpolation method. Defaults to bilinear. Supports bilinear, nearest, bicubic, area, lanczos3, lanczos5, gaussian, mitchellcubic</td> </tr><tr> <td> seed</td> <td> Integer. Used to create a random seed. </td> </tr><tr> <td> name` | A string, the name of the layer. |
4D tensor with shape: (samples, height, width, channels)
(data_format='channels_last').
4D tensor with shape: (samples, random_height, width, channels)
.
adapt
adapt( data, reset_state=True )
Fits the state of the preprocessing layer to the data being passed.
Arguments | |
---|---|
data | The data to train on. It can be passed either as a tf.data Dataset, or as a numpy array. |
reset_state | Optional argument specifying whether to clear the state of the layer at the start of the call to adapt , or whether to start from the existing state. This argument may not be relevant to all preprocessing layers: a subclass of PreprocessingLayer may choose to throw if 'reset_state' is set to False. |
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Licensed under the Creative Commons Attribution License 3.0.
Code samples licensed under the Apache 2.0 License.
https://www.tensorflow.org/versions/r2.4/api_docs/python/tf/keras/layers/experimental/preprocessing/RandomHeight