How to use monai for image normalization to zero-mean and unit-variance？

[AustinYuAo]

Hi:

How to use MONAI for image normalization to zero-mean and unit-variance?

[KumoLiu]

Hi @aubest, you could use NormalizeIntensity.

MONAI/monai/transforms/intensity/array.py

Lines 610 to 617 in baa17a8

	class NormalizeIntensity(Transform):
	"""
	Normalize input based on the `subtrahend` and `divisor`: `(img - subtrahend) / divisor`.
	Use calculated mean or std value of the input image if no `subtrahend` or `divisor` provided.
	This transform can normalize only non-zero values or entire image, and can also calculate
	mean and std on each channel separately.
	When `channel_wise` is True, the first dimension of `subtrahend` and `divisor` should
	be the number of image channels if they are not None.

Hope it can help you, thanks!