How to smoothen edges found in a image using matlab

Question

How to smoothen two line in below image using matlab ? So that it will look like 2 smooth curves.

Edge

I have try using imdilate and imclose functon as below

 imdilate(im_edge,strel('disk', 2))
 imclose(im_edge,strel('square', 2))

But edges just become delate or pixels become closer

Have you tried using a filter? Please show us what you tried. — Suever, Jul 16 '16 at 18:16
You can start by searching the matlab documentation for "filter image" — Suever, Jul 16 '16 at 18:18
i tried with this one [link](http://www.mathworks.com/help/vision/ref/integralfilter.html) and it just blur then image and resize the image aswell — Le Truong Sinh, Jul 16 '16 at 18:41
Please define exactly what you mean with *smoothen*. Your question is not really clear enough. Please [edit] your question to include what you have tried already and add the missing details. — Matt, Jul 16 '16 at 21:42
The image is too low quality to allow us see the pixels and local details. Can't answer. — , Aug 01 '16 at 07:12

Rotem · Accepted Answer · 2016-07-17T16:18:58.683

1

I was trying to find a way to make it look like a curve.
I think using morphological operations in the right directions.
Example for morphological operations:

dilate:

I = imread('Rx1wSm.jpg');
se = strel('disk',3);
J = imdilate(I, se);

close:

se = strel('disk',3);
J = imclose(I, se);

close with threshold:

se = strel('disk',3);
J = imclose(I, se);
J(J > 50) = 255;
J(J<50)=0;

There are many more morphological operations supported by Matlab.
Type doc bwmorph in Matlab command windows to view documentation.

There is still a room for improvement, but you need to find a better expert.

edited Jul 17 '16 at 16:18

answered Jul 16 '16 at 21:31

Rotem

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I want to make it look like a curve – Le Truong Sinh Jul 17 '16 at 01:41
@Le Truong Sinh There are many more morphological operations supported by Matlab. Type `doc bwmorph` in Matlab command windows to view documentation. – Rotem Jul 17 '16 at 16:20

How to smoothen edges found in a image using matlab

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