# nvidia.dali.fn.water¶

nvidia.dali.fn.water(*inputs, **kwargs)

Performs a water augmentation, which makes the image appear to be underwater.

Supported backends
• ‘cpu’

• ‘gpu’

Parameters

input (TensorList ('HWC')) – Input to the operator.

Keyword Arguments
• ampl_x (float, optional, default = 10.0) – Amplitude of the wave in the x direction.

• ampl_y (float, optional, default = 10.0) – Amplitude of the wave in the y direction.

• bytes_per_sample_hint (int or list of int, optional, default = [0]) –

Output size hint, in bytes per sample.

If specified, the operator’s outputs residing in GPU or page-locked host memory will be preallocated to accommodate a batch of samples of this size.

• fill_value (float, optional, default = 0.0) – Color value that is used for padding.

• freq_x (float, optional, default = 0.049087) – Frequency of the wave in the x direction.

• freq_y (float, optional, default = 0.049087) – Frequence of the wave in the y direction.

• interp_type (nvidia.dali.types.DALIInterpType, optional, default = DALIInterpType.INTERP_NN) – Type of interpolation used.

• mask (int or TensorList of int, optional, default = 1) –

Determines whether to apply this augmentation to the input image.

Here are the values:

• 0: Do not apply this transformation.

• 1: Apply this transformation.

• phase_x (float, optional, default = 0.0) – Phase of the wave in the x direction.

• phase_y (float, optional, default = 0.0) – Phase of the wave in the y direction.

• preserve (bool, optional, default = False) – Prevents the operator from being removed from the graph even if its outputs are not used.

• seed (int, optional, default = -1) –

Random seed.

If not provided, it will be populated based on the global seed of the pipeline.