Binomial Filter

The Binomial Filter applies a rectangular filter whose weights are given by binomial coefficients. For large size, n, the binomial filter approaches a Gaussian Filter as the limiting case. The weights are determined by the number of pixels in the width and height of the filter kernel and may be different in each direction.

The Binomial Filter command opens from the Image Window > Process > Filters menu and button on the Main Toolbar. The "immediate" form, shown first, opens when an image or image set is displayed in the top-most window. The general form can be used to select source images from folders, windows, or by matching templates.

Binomial Filter Properties

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, name template, or a Mira File List.
Width	Specifies the width of the binomial filter in terms of pixels along the horizontal (row) direction. For example, Width=3 gives uses the binomial expansion for n=3 to set weights of 1,2,1.
Height	Specifies the height of the binomial filter in terms of pixels along the vertical (column) direction. For example, Height=4 gives uses the binomial expansion for n=4 to set weights of 1,3,3,1.
Source Region	Specifies the rectangular region to be processed: 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.

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