ImageFilter—Wolfram Mathematica 9 Documentation

Details and Options Details and Options

ImageFilter[f, image, r] replaces the value of each pixel by the result of applying the function f to the × array of values around that pixel.
ImageFilter operates separately on each channel in an image.
ImageFilter[f, image, {r_row, r_col}] uses range in the vertical direction, and in the horizontal direction.
ImageFilter[f, image, {{r_top, r_bottom}, {r_left, r_right}}] picks out neighborhoods that extend rows up, rows down, columns to the left, and columns to the right.
The channel values supplied to f are normally in the range 0 to 1, regardless of the underlying type used in the Image object. The function f is assumed to return channel values that are normally in the range 0 to 1.
ImageFilter returns an image of the same type as image.
The following options can be given:

Padding	"Fixed"	what values to assume beyond the image
Interleaving	False	whether to supply f lists of channel values
Masking	All	region of interest

With the default setting Interleaving->False, the elements in the arrays to which f is applied are individual channel values for the pixels.
With Interleaving->True, the elements are instead the list of all channel values for a particular pixel.
ImageFilter[f, image, ...] by default gives an image of the same dimensions as image.
With a setting Padding->None, ImageFilter[f, image, ...] normally gives an image smaller than image.
ImageFilter works with Image3D object.