couldn't find what's wrong

this is my code

clc; clear all; close all;

im=imread('images.jpg');

size(im);

fid=fopen('document.txt','r');

c = fread(fid, 'uint8=>char')';

bin=dec2bin(c);

a=size(bin,1)*size(bin,2);

b=1

delta=20

wi=bin(3)

f=im(3,3)

m=floor(f/((2^b)*delta))

r=f-(2^b)*m*delta

f1=(2^b)*m*delta+wi*delta+r/(2^b)

in execution

b =

       1

delta =

      20

wi =

1

f =

      7

m =

      0

r =

      7

f1 =

    255

the value of f1 should be 24

I think the problem is in saving wi=bin(3) value in matlab because when I put wi=1; manually in my code it gives me 24 but my main code involves a loop and every time wi will take a new value from bin table

why is f1=255??

thank you

Answer 1

[Walter Roberson]

dec2bin returns '1' not 1.'1' is char(49)

[amira hl]

thank you Walter Roberson