translate

Translate structuring element

Syntax

SE2 = translate(SE,v)

Description

example

SE2 = translate(SE,v) translates the structuring element SE in N-D space. v is an N-element vector containing the offsets of the desired translation in each dimension.

Examples

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Read an image into the workspace.

I = imread('cameraman.tif');

Create a structuring element and translate it down and to the right by 25 pixels.

se = translate(strel(1), [25 25]);

Dilate the image using the translated structuring element.

J = imdilate(I,se);

Display the original image and the translated image.

figure
imshow(I), title('Original')

figure
imshow(J), title('Translated');

Create an offset structuring element.

SE = offsetstrel('ball', 5, 6.5)
SE = 
offsetstrel is a ball shaped offset structuring element with properties:

            Offset: [11x11 double]
    Dimensionality: 2

SE.Offset
ans = 11×11

      -Inf      -Inf         0    0.8123    1.6246    2.4369    1.6246    0.8123         0      -Inf      -Inf
      -Inf    0.8123    1.6246    2.4369    3.2492    3.2492    3.2492    2.4369    1.6246    0.8123      -Inf
         0    1.6246    2.4369    3.2492    4.0615    4.0615    4.0615    3.2492    2.4369    1.6246         0
    0.8123    2.4369    3.2492    4.0615    4.8738    4.8738    4.8738    4.0615    3.2492    2.4369    0.8123
    1.6246    3.2492    4.0615    4.8738    5.6861    5.6861    5.6861    4.8738    4.0615    3.2492    1.6246
    2.4369    3.2492    4.0615    4.8738    5.6861    6.4984    5.6861    4.8738    4.0615    3.2492    2.4369
    1.6246    3.2492    4.0615    4.8738    5.6861    5.6861    5.6861    4.8738    4.0615    3.2492    1.6246
    0.8123    2.4369    3.2492    4.0615    4.8738    4.8738    4.8738    4.0615    3.2492    2.4369    0.8123
         0    1.6246    2.4369    3.2492    4.0615    4.0615    4.0615    3.2492    2.4369    1.6246         0
      -Inf    0.8123    1.6246    2.4369    3.2492    3.2492    3.2492    2.4369    1.6246    0.8123      -Inf
      ⋮

Translate the structuring element.

V = [2 2];
SE2 = translate(SE,V)
SE2 = 
offsetstrel is a ball shaped offset structuring element with properties:

            Offset: [15x15 double]
    Dimensionality: 2

SE2.Offset
ans = 15×15

      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf
      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf
      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf
      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf
      -Inf      -Inf      -Inf      -Inf      -Inf      -Inf         0    0.8123    1.6246    2.4369    1.6246    0.8123         0      -Inf      -Inf
      -Inf      -Inf      -Inf      -Inf      -Inf    0.8123    1.6246    2.4369    3.2492    3.2492    3.2492    2.4369    1.6246    0.8123      -Inf
      -Inf      -Inf      -Inf      -Inf         0    1.6246    2.4369    3.2492    4.0615    4.0615    4.0615    3.2492    2.4369    1.6246         0
      -Inf      -Inf      -Inf      -Inf    0.8123    2.4369    3.2492    4.0615    4.8738    4.8738    4.8738    4.0615    3.2492    2.4369    0.8123
      -Inf      -Inf      -Inf      -Inf    1.6246    3.2492    4.0615    4.8738    5.6861    5.6861    5.6861    4.8738    4.0615    3.2492    1.6246
      -Inf      -Inf      -Inf      -Inf    2.4369    3.2492    4.0615    4.8738    5.6861    6.4984    5.6861    4.8738    4.0615    3.2492    2.4369
      ⋮

Input Arguments

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Structuring element, specified as a strel or offsetstrel object.

Translation offsets, specified as a numeric vector. Each element specifies the amount of desired translation in the corresponding dimension.

Output Arguments

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Translated structuring elements, returned as a strel or offsetstrel object.

See Also

Introduced before R2006a