Share Email Print
cover

Proceedings Paper

Chrominance watermark for mobile applications
Author(s): Alastair Reed; Eliot Rogers; Dan James
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

Creating an imperceptible watermark which can be read by a broad range of cell phone cameras is a difficult problem. The problems are caused by the inherently low resolution and noise levels of typical cell phone cameras. The quality limitations of these devices compared to a typical digital camera are caused by the small size of the cell phone and cost trade-offs made by the manufacturer. In order to achieve this, a low resolution watermark is required which can be resolved by a typical cell phone camera. The visibility of a traditional luminance watermark was too great at this lower resolution, so a chrominance watermark was developed. The chrominance watermark takes advantage of the relatively low sensitivity of the human visual system to chrominance changes. This enables a chrominance watermark to be inserted into an image which is imperceptible to the human eye but can be read using a typical cell phone camera. Sample images will be presented showing images with a very low visibility which can be easily read by a typical cell phone camera.

Paper Details

Date Published: 27 January 2010
PDF: 8 pages
Proc. SPIE 7542, Multimedia on Mobile Devices 2010, 75420V (27 January 2010); doi: 10.1117/12.839134
Show Author Affiliations
Alastair Reed, Digimarc Corp. (United States)
Eliot Rogers, Digimarc Corp. (United States)
Dan James, Digimarc Corp. (United States)


Published in SPIE Proceedings Vol. 7542:
Multimedia on Mobile Devices 2010
Reiner Creutzburg; David Akopian, Editor(s)

© SPIE. Terms of Use
Back to Top
PREMIUM CONTENT
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?
close_icon_gray