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How to make a rectangular shape with inner boundary having the value of 1 and outer boundary a value of 0?

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waqas
waqas 2021-12-20
评论： waqas 2021-12-21
Hi,
I am trying to make a rectangular shape with inner boundary value set as one and outer boundary value set as zero. Ideally a smoother transition from inner boundary to put boundary would be really helpful for my case. Following figure can explain the problem better:
In my implementation, I am struggling with the corners in particular with a linear transition from inner to outer boundary.
Following line should run the function to reproduce the the results of figure 2:
jQvals(Trow,Tcol,ouc,our,inc,inr,ptAbvCrk,ptBlwCrk,gridElems);
Relevant variable are in the attached mat file.
Looking forward to the feedback.
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Matt J
Matt J 2021-12-20
编辑：Matt J 2021-12-20
Ran in:
For example,
A=zeros(100);
A(30:70,30:70)=1;
A=max(0, 1-bwdist(A)/10);
A( abs( conv2(A,ones(3)/9,'same')-1)<=1e-6)=0;
imshow(A)
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Matt J
Matt J 2021-12-20
编辑：Matt J 2021-12-20
Ran in:
load mask
mask0=finalMask;
mask=imclose(mask0,ones(15,1));
A=bwconvhull(mask)&~mask; %deliberate here, but unnecessary. Just start with inner rectangle.
A=max(0, 1-bwdist(A)/5);
A( abs( conv2(A,ones(3)/9,'same')-1)<=1e-6)=0;
A=A.*mask0;
imshow(A)

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