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Class ZeroPadding2D
Zero-padding layer for 2D input (e.g. picture).
Inherits From: Layer
Aliases:
This layer can add rows and columns of zeros at the top, bottom, left and right side of an image tensor.
Arguments:
padding
: Int, or tuple of 2 ints, or tuple of 2 tuples of 2 ints.- If int: the same symmetric padding is applied to height and width.
- If tuple of 2 ints:
interpreted as two different
symmetric padding values for height and width:
(symmetric_height_pad, symmetric_width_pad)
. - If tuple of 2 tuples of 2 ints:
interpreted as
((top_pad, bottom_pad), (left_pad, right_pad))
data_format
: A string, one ofchannels_last
(default) orchannels_first
. The ordering of the dimensions in the inputs.channels_last
corresponds to inputs with shape(batch, height, width, channels)
whilechannels_first
corresponds to inputs with shape(batch, channels, height, width)
. It defaults to theimage_data_format
value found in your Keras config file at~/.keras/keras.json
. If you never set it, then it will be "channels_last".
Input shape:
4D tensor with shape:
- If data_format
is "channels_last"
:
(batch, rows, cols, channels)
- If data_format
is "channels_first"
:
(batch, channels, rows, cols)
Output shape:
4D tensor with shape:
- If data_format
is "channels_last"
:
(batch, padded_rows, padded_cols, channels)
- If data_format
is "channels_first"
:
(batch, channels, padded_rows, padded_cols)
__init__
__init__(
padding=(1, 1),
data_format=None,
**kwargs
)