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Adjust the contrast of one or more images.

images is a tensor of at least 3 dimensions. The last 3 dimensions are interpreted as [height, width, channels]. The other dimensions only represent a collection of images, such as [batch, height, width, channels].

Contrast is adjusted independently for each channel of each image.

For each channel, the Op first computes the mean of the image pixels in the channel and then adjusts each component of each pixel to (x - mean) * contrast_factor + mean.

images A Tensor. Must be one of the following types: half, float32. Images to adjust. At least 3-D.
contrast_factor A Tensor of type float32. A float multiplier for adjusting contrast.
name A name for the operation (optional).

A Tensor. Has the same type as images.