Simple interpolation inside matrix

Simple question, I have matrix A=

[1 1 1  1 1]
[1 1 60 1 1]
[1 1 1  1 1]
and i want to interpolate values inside the matrix to get sometgink like

[1  15 30 15  1]
[15 30 60 30 15]
[1  15 30 15  1]

I know that i have to use interp2 but it is just not working for me...

Answer 1

[Andrei Bobrov]

A =[ 1     1     1     1     1
     1     1    60     1     1
     1     1     1     1     1];

bw = A>1;
B = bwdist(bw,'cityblock');
v = [60./pow2(0:max(B(:))-1),1];
out = v(B+1);

ADD

use scatteredInterpolant:

A = [40 1  1 1 60
1  1 20 1  1
15 1  1 1  1];

[ii,jj] = find(A > 1);
ii = [ii;size(A,1)];
jj = [jj;size(A,2)];
F = scatteredInterpolant(ii,jj,[A(A>1);A(end)]);
[x,y]=ndgrid(1:size(A,1),1:size(A,2));
out = F(x,y);

[Jakub]

This works fine but what if i want to make it more generally. For example to interpolate matrixes like:

[40 1  1 1 60]
[1  1 20 1  1]
[15 1  1 1  1]

and to somehow interpolate between pixels in matrix.

[Andrei Bobrov]

see ADD

[Jakub]

what is ADD?

[Andrei Bobrov]

see code after word ADD in my answer

[Jakub]

Thank you very much!