tf.image.random_contrast

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

tf.image.random_contrast(
    image, lower, upper, seed=None
)

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.

Returns:

The contrast-adjusted image(s).

Raises:

• ValueError: if upper <= lower or if lower < 0.