Standard Library function that performs image smoothing by applying theLee Filter algorithm.
A 1D, 2D, or 3D array containing a signal; signal-interleaved signals; an image; image-interleaved images; or a volume. n
(optional) The value of 2n + 1 is used for the side of the filter box. The side of the filter box must be smaller than the smallest dimension of image. (Default: 5)sigma
(optional) The estimate of the standard deviation. The value must be a positive. (Default: 5)
NOTE: If sigma is negative, you will be prompted for a value to be typed in, the value will be displayed, and the filtered image will be displayed with the TVSCL command. This cycle will continue until a zero value of sigma is entered.
A two-dimensional array containing the smoothed image.
A scalar string indicating how edge effects are handled. (Default: 'copy') Valid strings are:
'zero' Sets the border of the output image to zero.
'copy' Copies the border of the input image to the output image. (Default)
A scalar string indicating the type of interleaving of 2D input signals containing signal-interleaved signals; and 3D input arrays containing image-interleaved images, or a volume. Valid strings and the corresponding interleaving methods are:
'signal' The 2D input image array arrangement is (x, p) for p signal-interleaved signals of length x.
'image' The 3D image array arrangement is (x, y, p) for p image-interleaved images of x-by-y.
'volume' The input image array is treated as a single entity.
Since LEEFILT is not very computationally expensive, it can be used for near real-time image processing. It can be used on signals as well as images.
