Significant Barcode (or Graphical Barcode) differs from the
traditional two-dimensional (2-D) barcodes such as PDF-417
in that it has the appearance of a graphical image. A PDF-417 consists of
seemingly random dots that do not resemble anything graphical.
Visually Significant Barcode (VSB) is a binary image which looks
like an iconic image or an acronym of a company logo. A Visually
Significant Barcode is generated by modulating the halftoning
methods according to a base image and the input bit string .
The bit string can be compressed, error-corrected and secured by any
An extension of the
VSB is the Image Barcode (IBC) . The encoding and decoding
of information using the VSB, uses a base image with very few
graylevels (typically only two). This typically requires the image
histogram to be bi-modal. This is indeed the case for the class of
logo images or icons. For continuous-tone images such as digital
photographs, we extend the concept of a VSB to an image bar code
(IBC) that is able to render shades of gray.
For the technical details, please refer to the following
 D. Shaked, Z.
Baharav, A. Levy, J. Yen and N. Saw "Graphical Indicia", Proc.
IEEE International Conference on Image Processing, vol. 1, pp.
485-488, Barcelona, Spain, Sept. 14-17, 2003. (PDF)
Damera-Venkata and J. Yen, “Image Barcodes”, Proc. SPIE Color
Imaging VIII: Processing, Hardcopy and Applications, vol. 5008,
pp. 493--503, Santa Clara, CA January 20-24, 2003. (PDF)
For more information about the
technology, please contact Jonathan Yen (email@example.com),
Doron Shaked (firstname.lastname@example.org),
or Niranjan Damera-Venkata (email@example.com).