tf.image.random_contrast()

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

Adjust the contrast of an image 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 set_random_seed for behavior.

Returns:

The contrast-adjusted tensor.

Raises:

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