error in evalfis..

this FIS takes 4 inputs...this is the following code:

 a=imread('Lenna.png');
 gg=rgb2gray(a);
 h=imresize(gg,[50 50]);
 [m,n]=size(h);
 figure, imshow(h)

 t=readfis('ed2.fis');
%z=zeros([m n]);
for i=2:m
    for j=2:n

            p4=g(i,j);
            p1=g(i-1,j-1);
            p2=g(i,j-1);
            p3=g(i-1,j);

           g(i,j)=evalfis([p1 p2 p3 p4],t);

    end
end
 imshow(g)

the error is: The first input must be a defined DOUBLE matrix

Error in ==> evalfis at 84 [output,IRR,ORR,ARR] = evalfismex(input, fis, numofpoints);

Error in ==> ed2x2 at 18 g(i,j)=evalfis([p1 p2 p3 p4],t);

but the problem is i dont want to convert the image to class double.. what do i do?

Answer 1

[Geoff]

Why don't you want to convert it to double? It's not like it's going to be huge.

You don't have to replace your uint8 image either:

h = imresize(gg,[50 50]);
dh = double(h);

By the way, in your loop you are using p4 as an input but it hasn't been calculated yet. Did you mean to take the p-values from your h-matrix, rather than your g-matrix?

Anyway, if that was the intent, just take p from dh instead of h

[Geoff]

Oh, and of course, convert back to uint8 to store in g. And it would pay to preallocate g:

g = uint8(zeros(m,n))

[mideas]

oh ya..m actually taking the p-values from the h-matrix. (i wrote it wrong out here...sorry). and thanx a lot..its working now..