tf.keras.layers.RandomHeight
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A preprocessing layer which randomly varies image height during training.
Inherits From: Layer, Module
tf.keras.layers.RandomHeight(
factor, interpolation='bilinear', seed=None, **kwargs
)
This layer adjusts the height of a batch of images by a random factor.
The input should be a 3D (unbatched) or 4D (batched) tensor in the
"channels_last" image data format. Input pixel values can be of any range
(e.g. [0., 1.) or [0, 255]) and of interger or floating point dtype. By
default, the layer will output floats.
By default, this layer is inactive during inference.
For an overview and full list of preprocessing layers, see the preprocessing
guide.
Args |
|---|
factor
|
A positive float (fraction of original height), or a tuple of size
2 representing lower and upper bound for resizing vertically. When
represented as a single float, this value is used for both the upper and
lower bound. For instance, factor=(0.2, 0.3) results in an output with
height changed by a random amount in the range [20%, 30%].
factor=(-0.2, 0.3) results in an output with height changed by a
random amount in the range [-20%, +30%]. factor=0.2 results in an
output with height changed by a random amount in the range
[-20%, +20%].
|
interpolation
|
String, the interpolation method. Defaults to "bilinear".
Supports "bilinear", "nearest", "bicubic", "area",
"lanczos3", "lanczos5", "gaussian", "mitchellcubic".
|
seed
|
Integer. Used to create a random seed.
|
|
|---|
3D
|
unbatched) or 4D (batched) tensor with shape
(..., height, width, channels), in "channels_last" format.
|
Output shape |
|---|
3D
|
unbatched) or 4D (batched) tensor with shape
(..., random_height, width, channels).
|
Attributes |
|---|
auto_vectorize
|
Control whether automatic vectorization occurs.
By default the call() method leverages the tf.vectorized_map()
function. Auto-vectorization can be disabled by setting
self.auto_vectorize = False in your __init__() method. When
disabled, call() instead relies on tf.map_fn(). For example:
class SubclassLayer(BaseImageAugmentationLayer):
def __init__(self):
super().__init__()
self.auto_vectorize = False
|
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Last updated 2023-10-06 UTC.
[null,null,["Last updated 2023-10-06 UTC."],[],[],null,["# tf.keras.layers.RandomHeight\n\n\u003cbr /\u003e\n\n|-----------------------------------------------------------------------------------------------------------------------------------------|\n| [View source on GitHub](https://github.com/keras-team/keras/tree/v2.11.0/keras/layers/preprocessing/image_preprocessing.py#L1767-L1890) |\n\nA preprocessing layer which randomly varies image height during training.\n\nInherits From: [`Layer`](../../../tf/keras/layers/Layer), [`Module`](../../../tf/Module)\n\n#### View aliases\n\n\n**Main aliases**\n\n[`tf.keras.layers.experimental.preprocessing.RandomHeight`](https://www.tensorflow.org/api_docs/python/tf/keras/layers/RandomHeight)\n\n\u003cbr /\u003e\n\n tf.keras.layers.RandomHeight(\n factor, interpolation='bilinear', seed=None, **kwargs\n )\n\nThis layer adjusts the height of a batch of images by a random factor.\nThe input should be a 3D (unbatched) or 4D (batched) tensor in the\n`\"channels_last\"` image data format. Input pixel values can be of any range\n(e.g. `[0., 1.)` or `[0, 255]`) and of interger or floating point dtype. By\ndefault, the layer will output floats.\n\nBy default, this layer is inactive during inference.\n\nFor an overview and full list of preprocessing layers, see the preprocessing\n[guide](https://www.tensorflow.org/guide/keras/preprocessing_layers).\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n| Args ---- ||\n|-----------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| `factor` | A positive float (fraction of original height), or a tuple of size 2 representing lower and upper bound for resizing vertically. When represented as a single float, this value is used for both the upper and lower bound. For instance, `factor=(0.2, 0.3)` results in an output with height changed by a random amount in the range `[20%, 30%]`. `factor=(-0.2, 0.3)` results in an output with height changed by a random amount in the range `[-20%, +30%]`. `factor=0.2` results in an output with height changed by a random amount in the range `[-20%, +20%]`. |\n| `interpolation` | String, the interpolation method. Defaults to `\"bilinear\"`. Supports `\"bilinear\"`, `\"nearest\"`, `\"bicubic\"`, `\"area\"`, `\"lanczos3\"`, `\"lanczos5\"`, `\"gaussian\"`, `\"mitchellcubic\"`. |\n| `seed` | Integer. Used to create a random seed. |\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n| Input shape ----------- ||\n|------|----------------------------------------------------------------------------------------------------------------------|\n| `3D` | `unbatched) or 4D (batched) tensor with shape` \u003cbr /\u003e `(..., height, width, channels)`, in `\"channels_last\"` format. |\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n| Output shape ------------ ||\n|------|------------------------------------------------------------------------------------------------|\n| `3D` | `unbatched) or 4D (batched) tensor with shape` \u003cbr /\u003e `(..., random_height, width, channels)`. |\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n| Attributes ---------- ||\n|------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| `auto_vectorize` | Control whether automatic vectorization occurs. \u003cbr /\u003e By default the `call()` method leverages the [`tf.vectorized_map()`](../../../tf/vectorized_map) function. Auto-vectorization can be disabled by setting `self.auto_vectorize = False` in your `__init__()` method. When disabled, `call()` instead relies on [`tf.map_fn()`](../../../tf/map_fn). For example: class SubclassLayer(BaseImageAugmentationLayer): def __init__(self): super().__init__() self.auto_vectorize = False \u003cbr /\u003e |\n\n\u003cbr /\u003e"]]
View source on GitHub