9.58. ITK Normalize Image Filter

Normalize an image by setting its mean to zero and variance to one.

Group (Subgroup)

ITKImageIntensity (ImageIntensity)

Description

NormalizeImageFilter shifts and scales an image so that the pixels in the image have a zero mean and unit variance. This filter uses StatisticsImageFilter to compute the mean and variance of the input and then applies ShiftScaleImageFilter to shift and scale the pixels.

NB: since this filter normalizes the data such that the mean is at 0, and \f$-\sigma\f$ to \f$+\sigma\f$ is mapped to -1.0 to 1.0, output image integral types will produce an image that DOES NOT HAVE a unit variance due to 68% of the intensity values being mapped to the real number range of -1.0 to 1.0 and then cast to the output integral value.* NormalizeToConstantImageFilter

Input Cell Data

Parameter Name

Parameter Type

Parameter Notes

Description

Image Geometry

Geometry Selection

Image

Select the Image Geometry Group from the DataStructure.

Input Cell Data

Array Selection

Allowed Types: int8, uint8, int16, uint16, int32, uint32, int64, uint64, float32, float64

The image data that will be processed by this filter.

Output Cell Data

Parameter Name

Parameter Type

Parameter Notes

Description

Output Cell Data

DataObjectName

The result of the processing will be stored in this Data Array inside the same group as the input data.

Example Pipelines

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