Digital Watermarking of Natural Images Based on LPTV Filters

Author

Martin, V. ; Chabert, M. ; Lacaze, B.

Author_Institution

ENSEEIHT, Nat. Polytech Inst. of Toulouse

Volume

2

fYear

2007

fDate

15-20 April 2007

Abstract

In this paper, linear periodically time varying (LPTV) filters are used as an alternative to direct sequence modulation in spread spectrum watermarking techniques. Due to their periodicity, LPTV filters combined with a Peano-Hilbert scan in the spatial domain of natural images offer good decoding performance. Specific LPTV filters are proposed to reject the low-pass host noise and to shape the watermark spectrum. Extensions to improved spread spectrum and quantization in a subspace projection are also investigated.

Keywords

image coding; image denoising; modulation; time-varying filters; watermarking; LPTV filters; Peano-Hilbert scan; digital watermarking; direct sequence modulation; linear periodically time varying filters; low-pass host noise rejection; natural images; spread spectrum watermarking techniques; subspace projection; Additive white noise; Decoding; Digital filters; Interference; Noise robustness; Nonlinear filters; Pulse modulation; Quantization; Spread spectrum communication; Watermarking; Image processing; Spread spectrum communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech and Signal Processing, 2007. ICASSP 2007. IEEE International Conference on

Conference_Location

Honolulu, HI

ISSN

1520-6149

Print_ISBN

1-4244-0727-3

Electronic_ISBN

1520-6149

Type

conf

DOI

10.1109/ICASSP.2007.366206

Filename

4217379