# Gauss Sampler

Choose the subsampling factor along the Sample X and Sample Y. The larger the subsampling factors you choose, the smaller the output image, while you should choose smoothing factors approximately equal to the size of the features you want to attenuate. You can also choose the smoothing factor along Smoothness X and Smoothness Y. Enter an optional Magnitude Shift to produce lighter or darker output images.

The tab displays Sigma X and Sigma Y values for the standard deviation of grey values of the Gaussian curve along the (x, y) axis.

Click the Advanced button to specify parameters for using image masking

Option | Description
--- | ---
Output Select | Whether the operator should output just an image, or an image plus a computed image mask.
Intermediate Mask Select | Decides whether to use the intermediate image mask, or use the input image mask as the intermediate image mask.
Intermediate Computation Policy | How to use the kernel and the input image mask to determine whether to compute a pixel value or copy from the input image.
Care Pels Min Frac: | Valid when Intermediate Computation Policy is set to UseCarePelsMinFraction. If the fraction of Care pixels within the kernel of the Input Image Mask are greater than or equal to this setting, use the computed value. Otherwise copy the input pixel value.

See the topic Gaussian Sampling for more information.