why imerode and imdilate make matlab stopped every time ?

after write imerode function

i=imread('\cameraman.jpg');
B=im2bw(1,0.3);
K3=ones(3);
K5=ones(5);
K7=ones(7);
K9=ones(9);
B3=imerode(B,K3);
B5=imerode(B,K5);
B7=imerode(B,K7);
B9=imerode(B,K9);

imshow(B)
figure, imshow(B3), title('by 3');
figure, imshow(B5), title('by 5');
figure, imshow(B7), title('by 7');
figure, imshow(B9), title('by 9');

matlab stop and popup msg with matlab must be debug ?

what can i do ?

function imdilate show msg matlab has encountered an internal problem and need to close .

so how solve this problem ?

[Walter Roberson]

Does your MATLAB also stop working as soon as you draw any graphics? For example, does plot(3,5) cause problems?

[Amith Kamath]

FYI: The crash can be observed by doing this:

 imerode(true, ones(3,3));

There is no crash observed for other strel sizes.

Answer 1

[Amith Kamath]

Alaa:

You've probably found a bug in imerode. However, I believe you really meant to do this instead:

 B = im2bw(i, 0.3); % in this case, B is indeed the 256x256 matrix.

rather than

 B = im2bw(1,0.3); % in this case, B is a scalar logical value of 1.

Doing so will not make MATLAB crash, but provide you the results you were originally looking for.

Hope this helps!

[alaa adel]

thank you for your help

this

B= im2bw(i);

solve my problem as not make MATLAB crash

but i don't know the reason

[Walter Roberson]

This is one of the reasons to avoid using i as a variable name.