Q:

How to smoothen edges found in a image using matlab

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

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

A:

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.

