tf.image.random_contrast

Adjust the contrast of an image or images by a random factor.

Equivalent to adjust_contrast() but uses a contrast_factor randomly picked in the interval [lower, upper).

Args
image An image tensor with 3 or more dimensions.
lower float. Lower bound for the random contrast factor.
upper float. Upper bound for the random contrast factor.
seed A Python integer. Used to create a random seed. See tf.compat.v1.set_random_seed for behavior.

Usage Example:

x = [[[1.0, 2.0, 3.0],
      [4.0, 5.0, 6.0]],
    [[7.0, 8.0, 9.0],
      [10.0, 11.0, 12.0]]]
tf.image.random_contrast(x, 0.2, 0.5)
<tf.Tensor: shape=(2, 2, 3), dtype=float32, numpy=...>
Returns
The contrast-adjusted image(s).
Raises
ValueError if upper <= lower or if lower < 0.

© 2020 The TensorFlow Authors. All rights reserved.
Licensed under the Creative Commons Attribution License 3.0.
Code samples licensed under the Apache 2.0 License.
https://www.tensorflow.org/versions/r2.4/api_docs/python/tf/image/random_contrast