2D Padding Layer

pad2d_layer_type

pad2d_layer_type(
  padding,
  method,
  input_shape=...
)

The pad2d_layer_type derived type provides a 2D padding layer that adds padding to the input tensor along the spatial dimensions.

Arguments

  • padding (integer, dimension(:)): Padding sizes [pad_width, pad_height]. Required argument.

  • method (character(*)): Padding method. Required argument.

    • "none"/"valid": No padding is applied.

    • "same"/"constant"/"zero": Pad with a constant value (zeros).

    • "full": Same as “same” but assumes padding such that each element has equal contributions and the output size is increased accordingly.

    • "circular": Wrap around the input values.

    • "reflection": Reflect the values at the boundaries.

    • "replication": Replicate the edge values.

  • input_shape (integer, dimension(:)): Shape of the input data (width, height, channels).

Shape:

  • Input: (width, height, channels, batch_size).

  • Output: (width + 2*padding(1), height + 2*padding(2), channels, batch_size).