View source on GitHub
|
Applies random Gaussian blur to images for data augmentation.
Inherits From: Layer, Operation
tf.keras.layers.RandomGaussianBlur(
factor=1.0,
kernel_size=3,
sigma=1.0,
value_range=(0, 255),
data_format=None,
seed=None,
**kwargs
)
This layer performs a Gaussian blur operation on input images with a
randomly selected degree of blurring, controlled by the `factor` and
`sigma` arguments.
Note: This layer is safe to use inside a <a href="../../../tf/data"><code>tf.data</code></a> or `grain` pipeline
(independently of which backend you're using).
Args:
factor: A single float or a tuple of two floats.
`factor` controls the extent to which the image hue is impacted.
`factor=0.0` makes this layer perform a no-op operation,
while a value of `1.0` performs the most aggressive
blurring available. If a tuple is used, a `factor` is
sampled between the two values for every image augmented. If a
single float is used, a value between `0.0` and the passed float is
sampled. Default is 1.0.
kernel_size: Integer. Size of the Gaussian kernel used for blurring.
Must be an odd integer. Default is 3.
sigma: Float or tuple of two floats. Standard deviation of the Gaussian
kernel. Controls the intensity of the blur. If a tuple is provided,
a value is sampled between the two for each image. Default is 1.0.
value_range: the range of values the incoming images will have.
Represented as a two-number tuple written `[low, high]`. This is
typically either `[0, 1]` or `[0, 255]` depending on how your
preprocessing pipeline is set up.
seed: Integer. Used to create a random seed.
Example:
layer = keras.layers.RandomGaussianBlur(value_range=(0, 255))
images = np.random.randint(0, 255, (8, 224, 224, 3), dtype="uint8")
labels = keras.ops.one_hot(
np.array([0, 1, 2, 0, 1, 2, 0, 1]),
num_classes=3
)
segmentation_masks = np.random.randint(0, 3, (8, 224, 224, 1), dtype="uint8")
output = layer(
{
"images": images,
"labels": labels,
"segmentation_masks": segmentation_masks
},
training=True
)
Methods
convert_weight
convert_weight(
weight
)
Convert the weight if it is from the a different backend.
from_config
@classmethodfrom_config( config )
Creates an operation from its config.
This method is the reverse of get_config, capable of instantiating the
same operation from the config dictionary.
if "dtype" in config and isinstance(config["dtype"], dict):
policy = dtype_policies.deserialize(config["dtype"])
| Args | |
|---|---|
config
|
A Python dictionary, typically the output of get_config.
|
| Returns | |
|---|---|
| An operation instance. |
get_random_transformation
get_random_transformation(
data, training=True, seed=None
)
transform_bounding_boxes
transform_bounding_boxes(
bounding_boxes, transformation, training=True
)
transform_images
transform_images(
images, transformation=None, training=True
)
transform_labels
transform_labels(
labels, transformation, training=True
)
transform_segmentation_masks
transform_segmentation_masks(
segmentation_masks, transformation, training=True
)
transform_single_bounding_box
transform_single_bounding_box(
bounding_box, transformation, training=True
)
transform_single_image
transform_single_image(
image, transformation, training=True
)
transform_single_label
transform_single_label(
label, transformation, training=True
)
transform_single_segmentation_mask
transform_single_segmentation_mask(
segmentation_mask, transformation, training=True
)
View source on GitHub