immorphology.q

Summary

immorphology.q
Functions
morph_filter	Generic prototype for ANY morphological filter in this module
imerode	Mathematical erosion computes for every pixel (i,j) the minimum over all pixels in the window centered at (i,j), according to the given mask.
imdilate	Mathematical dilation computes for every pixel (i,j) the maximum over all pixels in the window centered at (i,j), according to the given mask.
imopen	The morphological opening on an image is defined as an erosion followed by a dilation.
imclose	The morphological closing on an image is defined as an dilation followed by a erosion.

Functions

morph_filter

Generic prototype for ANY morphological filter in this module

function y = morph_filter[T](x : cube[T], mask : mat[T], ctr : ivec2,
                         init : T, morph_op : [__device__ (T, T) -> T])

Parameters

x	the input image
mask	the morphology mask (should be binary!)
ctr	the center of the mask
morph_op	the operation (e.g. minimum or maximum)
init	the value to be used when the mask is empty

Remarks

Gray scale morphology is performed. However, when the input is binary, binary morphology is correctly obtained.
For color images, the filter processes each channel individually.

imerode

Mathematical erosion computes for every pixel (i,j) the minimum over all pixels in the window centered at (i,j), according to the given mask.

y = imerode(x : cube, mask : mat, ctr : ivec2)

Parameters

x	the input image
mask	the mask to use
ctr	the coordinates of the center of the mask (typically floor(size(mask)/2))

imdilate

Mathematical dilation computes for every pixel (i,j) the maximum over all pixels in the window centered at (i,j), according to the given mask.

y = imdilate(x : cube, mask : mat, ctr : ivec2)

Parameters

x	the input image
mask	the mask to use
ctr	the coordinates of the center of the mask (typically floor(size(mask)/2))

imopen

The morphological opening on an image is defined as an erosion followed by a dilation. Opening can remove small bright intensities and connect small dark regions.

function y = imopen(x : cube, mask : mat, ctr : ivec2)

Parameters

x	the input image
mask	the mask to use
ctr	the coordinates of the center of the mask (typically floor(size(mask)/2))

imclose

The morphological closing on an image is defined as an dilation followed by a erosion. Opening can remove small dark intensities and connect small bright regions.

function y = imclose(x : cube, mask : mat, ctr : ivec2)

Parameters

x	the input image
mask	the mask to use
ctr	the coordinates of the center of the mask (typically floor(size(mask)/2))