Gaussian Filter


The Gaussian Filter applies a Gaussian-weighted filter to an image. The filter may have circular symmetry or be elongated and rotated. The Elliptical Filter is similar in these regards but uses uniform weights rather than Gaussian weights.

Gaussian Filter

Profile [|>]

Selects the parameter profile for this command and allows you to save or work with existing presets.

[Select]

Opens the Select Source Images dialog to choose images from an image window, folder, files, pattern, or a file list.

Sigma

Specifies the width of the Gaussian filter in terms of the Gaussian sigma. For example, Sigma=3 creates a filter width sigma value equal to 3.0.

Symmetric

Specifies whether the Gaussian filter is circularly symmetric. If checked, then a circular filter kernel is created with Elongation equal to 0.

Elong %

Specifies the percent elongation of the filter. This property applies only if Symmetric is not checked.

Angle

Specifies the angle in degrees of the major axis of the Gaussian kernel. This property applies only if Symmetric is not checked.

Source Region

Specifies the rectangular region to be processed. The options are as follows:

Entire image: The entire image is processed.

Image Cursor: The region to be processed is selected using the Image Cursor.

Rectangle: The region specified by Min and Max limits for Column and Row coordinates is processed.

Column and Row, Min and Max: When Rectangle is selected, these values specify the column and row limits to be processed.

Related Topics

Spatial Filter Commands, Binomial Filter, Elliptical Filter