finding the co-ordinates

I have a matrix as 

S=[0 0 0 0 0 0 0  0 0 0 0
0 0 0 1 1 1 1 0 0 0 0
0 0 0 1 1 1 1 0 0 0 0
0 0 0 1 1 1 1 0 0 0 0
0 0 0 1 1 1 1 0 0 0 0
0 0 0 1 1 1 1 0 0 0 0]

in this i want to find the position of ones so that i can draw the bounding box over ones please help how to processs

Answer 1

[Andrei Bobrov]

st = regionprops(S, 'BoundingBox' )

eg:

z = randi(15,size(S))
ij = ceil(st.BoundingBox);
out = z(ij(2) + (0:ij(4)-1),ij(1) + (0:ij(3)-1))

added after the Kash's comment

Img = imread('Q8vjJ.png');
BW = im2bw(Img,graythresh(Img));
BW(:,1) = false;
BW2 = cumsum(BW,2) & fliplr(cumsum(BW(:,end:-1:1),2));
BW2 =  cumsum(BW2) & flipud(cumsum(BW2(end:-1:1,:)));
st = regionprops(SBW2, 'BoundingBox' );
imcrop(Img,st.BoundingBox + [-1 -1 1 1]);

[kash]

Thanks andrei i get as

st =

BoundingBox: [3.5000 1.5000 4 5]

S is an matrix of an image i have just given few rows and columns ,now hoew to draw the boundingbox over thode region i.e white region in image

[kash]

Andrei i get error

Error using ==> ceil

Too many input arguments.

for my image

http://imgur.com/Q8vjJ

please help

[kash]

I need just a bounding box over the white regions (i.e) the text,but the image is cropped .i dont want to crop the image just a bounding box over it