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Perform the opening operation on the image shown. Use the structuring element Image is of size 10 x 10.
written 6.0 years ago by gravatar for teamques10 teamques10 ★ 68k •   modified 4.5 years ago

enter image description here

Figure 41
digital image processing
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written 6.0 years ago by gravatar for teamques10 teamques10 ★ 68k

The image raw data is shown.

Opening is basically Erosion followed by Dilation.

Open = D (E(A))

A  B = (A  B)  B

enter image description here

Step 1: Remember, Erosion is minimum

{A(x  i, y  j) × B (i, j)}

Eroding A with B, we get

enter image description here

We now dilating this image

enter image description here

The modified image looks like

enter image description here

Figure 42

  • The original image had two white blocks which were connected by a thin white strip.
  • Opening this image got rid of this strip.
  • The size of the white blocks remain unchanged.
  • Hence we see that opening breaks down narrow bridges or isolates objects which may just be touching one another.
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