tf.keras.preprocessing.image.random_zoom

tf.keras.preprocessing.image.random_zoom(
    x,
    zoom_range,
    row_axis=1,
    col_axis=2,
    channel_axis=0,
    fill_mode='nearest',
    cval=0.0
)

Defined in tensorflow/python/keras/preprocessing/image.py.

Performs a random spatial zoom of a Numpy image tensor.

Arguments:

  • x: Input tensor. Must be 3D.
  • zoom_range: Tuple of floats; zoom range for width and height.
  • row_axis: Index of axis for rows in the input tensor.
  • col_axis: Index of axis for columns in the input tensor.
  • channel_axis: Index of axis for channels in the input tensor.
  • fill_mode: Points outside the boundaries of the input are filled according to the given mode (one of {'constant', 'nearest', 'reflect', 'wrap'}).
  • cval: Value used for points outside the boundaries of the input if mode='constant'.

Returns:

Zoomed Numpy image tensor.

Raises:

  • ValueError: if zoom_range isn't a tuple.