gblur {EBImage}R Documentation

Low-pass Gaussian filter

Description

Filters an image with a low-pass Gaussian filter.

Usage

gblur(x, sigma, radius = 2 * ceiling(3 * sigma) + 1)

Arguments

x

An Image object or an array.

sigma

A numeric denoting the standard deviation of the Gaussian filter used for blurring.

radius

The radius of the filter in pixels. Default is 2*ceiling(3*sigma)+1).

Details

The Gaussian filter is created with the function makeBrush.

Value

An Image object or an array, containing the filtered version of x.

Author(s)

Oleg Sklyar, osklyar@ebi.ac.uk, 2005-2007

See Also

filter2, makeBrush

Examples

  x = readImage(system.file("images", "lena.png", package="EBImage"))
  if (interactive()) display(x)

  y = gblur(x, sigma=8)
  if (interactive()) display(y, title='gblur(x, sigma=8)')
[Package EBImage version 4.4.0 Index]