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,
...
)What to compose the new Layer instance with. Typically a
Sequential model or a Tensor (e.g., as returned by layer_input()).
The return value depends on object. If object is:
missing or NULL, the Layer instance is returned.
a Sequential model, the model with an additional layer is returned.
a Tensor, the output tensor from layer_instance(object) is returned.
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%].
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.
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 mode. Supported values: "nearest",
"bilinear".
Integer. Used to create a random seed.
a float represents the value to be filled outside the boundaries
when fill_mode="constant".
standard layer arguments.
Other image augmentation layers:
layer_random_brightness(),
layer_random_contrast(),
layer_random_crop(),
layer_random_flip(),
layer_random_height(),
layer_random_rotation(),
layer_random_translation(),
layer_random_width()
Other preprocessing layers:
layer_category_encoding(),
layer_center_crop(),
layer_discretization(),
layer_hashing(),
layer_integer_lookup(),
layer_normalization(),
layer_random_brightness(),
layer_random_contrast(),
layer_random_crop(),
layer_random_flip(),
layer_random_height(),
layer_random_rotation(),
layer_random_translation(),
layer_random_width(),
layer_rescaling(),
layer_resizing(),
layer_string_lookup(),
layer_text_vectorization()