Performance Analysis of Text Halftone Modulation

Author

Borges, Paulo Vinicius Koerich ; Mayer, Joceli ; Izquierdo, Ebroul

Author_Institution

Fed. Univ. of Santa Catarina, Florianopolis

Volume

3

fYear

2007

fDate

Sept. 16 2007-Oct. 19 2007

Abstract

This paper analyzes the use of text halftone modulation (THM) as a text hardcopy watermarking method. Using THM, text characters in a document have their luminances modified from the standard black to a gray level generated with a given halftone screen, according to a message to be transmitted. The application of THM has been discussed in ((R. Villan et al., 2006), (K. Matsuit and K. Tanaka, 1994)). In this paper, a spectral metric is proposed to detect the embedded message. Based on this metric, an error rate analysis of halftone modulation is presented considering the effects of the print and scan channel. Experiments validate the analysis and the applicability of the method.

Keywords

document image processing; error statistics; image coding; text analysis; watermarking; document text characters; embedded message detection; error rate analysis; performance analysis; spectral metric; text halftone modulation; text hardcopy watermarking method; Authentication; Character generation; Data structures; Error analysis; Humans; Information analysis; Internet telephony; Performance analysis; Shape; Watermarking; Watermarking; print-scan; spectral detection;

fLanguage

English

Publisher

ieee

Conference_Titel

Image Processing, 2007. ICIP 2007. IEEE International Conference on

Conference_Location

San Antonio, TX

ISSN

1522-4880

Print_ISBN

978-1-4244-1437-6

Electronic_ISBN

1522-4880

Type

conf

DOI

10.1109/ICIP.2007.4379302

Filename

4379302