MATLAB Answers

Morphological Transformation, remove border border of a closed image

6 views (last 30 days)
Hello
I need to remove the upper border (red highligth) of this binarized image without affecting the bottom section, i haven't been able to figure out exactly which functions of the Image Processing Toolbox could help me.

  0 Comments

Sign in to comment.

Accepted Answer

Mahesh Taparia
Mahesh Taparia on 27 Mar 2020
Hi
Using morphological operations and connected components algorithm, the problem can be solved with the minor loss of bottom pixels.For example:
a=imread('imag.jpeg');
figure;imshow(a)
se = strel('line',8,90);
eroded = imerode(a,se);
b=logical(eroded);
st=regionprops('Table',b(:,:,1),'Area');
m=maxk(st.Area,2);
biggest = bwareafilt(b(:,:,1),[m(2) m(1)]);
figure;imshow(biggest)
dil=imdilate(biggest,se);
figure;imshow(dil)
The above code results in the below image. You can try with some other parameters of morphological processing and check if it will be more clear.
Hope it will helps.

  1 Comment

Daniel Tofino
Daniel Tofino on 29 Mar 2020
Thank you,
I obtained similar results using:
a=imread('imag.jpeg');
figure;imshow(a)
se = strel('rectangle',[4 3]);
open = imopen(a,se);
figure;imshow(open)

Sign in to comment.

More Answers (0)

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by