related to image processing

hi, I have made the following program which is used for refinement in image coding. mark=zeros(1,4); out1=zeros(1,4); out=zeros(1,4); x=[1 3 7 8]; for n=3:-1:1; t=2^n; for i=1:4; if (x(i)>=t);

        switch mark(i)
            case 0
                out1(i)=sign(x(i));
                mark(i)=1;

            case 1
                z=dec2bin(x(i),4);
                out1(i)=z(1);
                mark(i)=2;
            case 2
                z1=dec2bin(x(i),4);
                out1(i)=z1(2);
                mark(i)=3;

            otherwise
        end
    else
        out1(i)=0;
    end

    end
end

when I run this program I get finally out1 as 0 1 48 48 . Instead I should get 0 1 0 0. Can any body tell me what is the problem with my program.

[John D'Errico]

Please don't title every post of yours exactly the same "related to image processing". This is confusing and it does not help anyone else who may be able to learn from your post.

As well, please don't ask the same question twice!

[Image Analyst]

And this will help us to help you : http://www.mathworks.com/matlabcentral/answers/13205-tutorial-how-to-format-your-question-with-markup

Answer 1

[Mischa Kim]

Aman, use

 out1(i) = str2num(z(1));

instead (and similar for the other out1(i) command. dec2bin outputs a string, which you need to convert back to numeric format.

[aman]

Thanks a lot. God bless you.