This layer will randomly zoom in or out on each axis of an image independently, filling empty space according to fill_mode.

layer_random_zoom(
  object,
  height_factor,
  width_factor = NULL,
  fill_mode = "reflect",
  interpolation = "bilinear",
  seed = NULL,
  fill_value = 0,
  ...
)

Arguments

object

What to call the new Layer instance with. Typically a keras Model, another Layer, or a tf.Tensor/KerasTensor. If object is missing, the Layer instance is returned, otherwise, layer(object) is returned.

height_factor

a float represented as fraction of value, or a list of size 2 representing lower and upper bound for zooming vertically. When represented as a single float, this value is used for both the upper and lower bound. A positive value means zooming out, while a negative value means zooming in. For instance, height_factor = c(0.2, 0.3) result in an output zoomed out by a random amount in the range [+20%, +30%]. height_factor = c(-0.3, -0.2) result in an output zoomed in by a random amount in the range [+20%, +30%].

width_factor

a float represented as fraction of value, or a list of size 2 representing lower and upper bound for zooming horizontally. When represented as a single float, this value is used for both the upper and lower bound. For instance, width_factor = c(0.2, 0.3) result in an output zooming out between 20% to 30%. width_factor = c(-0.3, -0.2) result in an output zooming in between 20% to 30%. Defaults to NULL, i.e., zooming vertical and horizontal directions by preserving the aspect ratio.

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".

...

standard layer arguments.

See also