barcode detection....i wanted to draw a red box around a barcode image...showing that the barcode is detected from the image...

i wanted to draw a red box around a barcode image... showing that the barcode is detected from the image... my image is a barcode image itself... (means barcode is not a portion of my image..the full image is barcode itself...

Answer 1

[michael scheinfeild]

hold on use line command you have option of color

[Elysi Cochin]

Irgb = imread('15wmqe9.jpg');
Irgb = imread('av672a.jpg');
Iresize = imresize(Irgb,0.33);
Igray = double(rgb2gray(Iresize));

[dIx dIy] = gradient(Igray);
B = imabsdiff(abs(dIx),abs(dIy));

H = fspecial('gaussian', 20, 10);
C = imfilter(B, H);
Th = max(C(:));
D = C < Th-10;

stat = regionprops(~D,'Area','BoundingBox');
for i = 1 : numel(stat), 
    Iarea(i) = stat(i).Area;
end
[C I] = max(Iarea);
bb = stat(I).BoundingBox;

imshow(Iresize); hold on
rectangle('position',bb,'edgecolor','r');

Now my error code is:

??? Index exceeds matrix dimensions.

Error in ==> Untitled6 at 20 
bb = stat(I).BoundingBox;

Can u rectify the above error for me?

[Image Analyst]

What's the URL where you uploaded 15wmqe9.jpg?????