Authors
Renato Villán, Sviatoslav Voloshynovskiy, Oleksiy Koval, Thierry Pun
Publication date
2006/11/20
Journal
IEEE Transactions on Information Forensics and Security
Volume
1
Issue
4
Pages
405-420
Publisher
IEEE
Description
In this paper, we deal with the design of high-rate multilevel 2-D bar codes for the print-and-scan channel. First, we introduce a framework for evaluating the performance limits of these codes by studying an intersymbol-interference (ISI)-free, synchronous, and noiseless print-and-scan channel, where the input and output alphabets are finite and the printer device uses halftoning to simulate multiple gray levels. Second, we present a new model for the print-and-scan channel specifically adapted to the problem of communications via multilevel 2-D bar codes. This model, inspired by our experimental work, assumes perfect synchronization and absence of ISI, but independence between the channel input and the noise is not assumed. We adapt the theory of multilevel coding with multistage decoding (MLC/MSD) to the print-and-scan channel. Finally, we present experimental results confirming the utility of our channel …
Total citations
Scholar articles
R Villán, S Voloshynovskiy, O Koval, T Pun - IEEE Transactions on Information Forensics and …, 2006
Multilevel 2D bar codes: toward high capacity storage modules for multimedia security and management
R Villán, S Voloshynovskiy, O Koval, T Pun - … , and Watermarking of Multimedia Contents VII, 2005