tf.keras.layers.ZeroPadding3D

Zero-padding layer for 3D data (spatial or spatio-temporal).

Inherits From: Layer, Operation

tf.keras.layers.ZeroPadding3D(
    padding=((1, 1), (1, 1), (1, 1)), data_format=None, **kwargs
)

Example:

input_shape = (1, 1, 2, 2, 3)
x = np.arange(np.prod(input_shape)).reshape(input_shape)
y = keras.layers.ZeroPadding3D(padding=2)(x)
y.shape
(1, 5, 6, 6, 3)

Args
`padding`	Int, or tuple of 3 ints, or tuple of 3 tuples of 2 ints. If int: the same symmetric padding is applied to depth, height, and width. If tuple of 3 ints: interpreted as three different symmetric padding values for depth, height, and width: `(symmetric_dim1_pad, symmetric_dim2_pad, symmetric_dim3_pad)`. If tuple of 3 tuples of 2 ints: interpreted as `((left_dim1_pad, right_dim1_pad), (left_dim2_pad, right_dim2_pad), (left_dim3_pad, right_dim3_pad))`.
`data_format`	A string, one of `"channels_last"` (default) or `"channels_first"`. The ordering of the dimensions in the inputs. `"channels_last"` corresponds to inputs with shape `(batch_size, spatial_dim1, spatial_dim2, spatial_dim3, channels)` while `"channels_first"` corresponds to inputs with shape `(batch_size, channels, spatial_dim1, spatial_dim2, spatial_dim3)`. When unspecified, uses `image_data_format` value found in your Keras config file at `~/.keras/keras.json` (if exists). Defaults to `"channels_last"`.

Args

padding

Int, or tuple of 3 ints, or tuple of 3 tuples of 2 ints.

If int: the same symmetric padding is applied to depth, height, and width.
If tuple of 3 ints: interpreted as three different symmetric padding values for depth, height, and width: (symmetric_dim1_pad, symmetric_dim2_pad, symmetric_dim3_pad).
If tuple of 3 tuples of 2 ints: interpreted as ((left_dim1_pad, right_dim1_pad), (left_dim2_pad, right_dim2_pad), (left_dim3_pad, right_dim3_pad)).

data_format A string, one of "channels_last" (default) or "channels_first". The ordering of the dimensions in the inputs. "channels_last" corresponds to inputs with shape (batch_size, spatial_dim1, spatial_dim2, spatial_dim3, channels) while "channels_first" corresponds to inputs with shape (batch_size, channels, spatial_dim1, spatial_dim2, spatial_dim3). When unspecified, uses image_data_format value found in your Keras config file at ~/.keras/keras.json (if exists). Defaults to "channels_last".

Input shape
5D tensor with shape: If `data_format` is `"channels_last"`: `(batch_size, first_axis_to_pad, second_axis_to_pad, third_axis_to_pad, depth)` If `data_format` is `"channels_first"`: `(batch_size, depth, first_axis_to_pad, second_axis_to_pad, third_axis_to_pad)`

Input shape

5D tensor with shape:

If data_format is "channels_last": (batch_size, first_axis_to_pad, second_axis_to_pad, third_axis_to_pad, depth)
If data_format is "channels_first": (batch_size, depth, first_axis_to_pad, second_axis_to_pad, third_axis_to_pad)

Output shape
5D tensor with shape: If `data_format` is `"channels_last"`: `(batch_size, first_padded_axis, second_padded_axis, third_axis_to_pad, depth)` If `data_format` is `"channels_first"`: `(batch_size, depth, first_padded_axis, second_padded_axis, third_axis_to_pad)`

Output shape

5D tensor with shape:

If data_format is "channels_last": (batch_size, first_padded_axis, second_padded_axis, third_axis_to_pad, depth)
If data_format is "channels_first": (batch_size, depth, first_padded_axis, second_padded_axis, third_axis_to_pad)

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.

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`

View source

symbolic_call(
    *args, **kwargs
)