Digital image watermarking approach based on lapped orthogonal transform

Author

Wang, Feng-Hsing ; Pan, Jeng-Shyang ; Jain, Lakhmi C. ; Huang, Hsiang-Cheh

Author_Institution

Sch. of Electr. & Inf. Eng., South Australia Univ., The Levels, SA, Australia

Volume

2

fYear

2004

fDate

6-9 Dec. 2004

Firstpage

1133

Abstract

A new watermarking approach based on lapped orthogonal transform (LOT) is proposed. It provides better imperceptibility by reducing the blocking effects which exist in most block-based image coding transforms like JPEG. The proposed scheme performs the LOT to the cover image, modifies the LOT coefficients to hide the watermark bits according to the given user-key, and executes the inverse LOT to generate a watermarked image. It requires no original cover image to be introduced during extraction, and it has strong robustness under the JPEG attacks.

Keywords

block codes; feature extraction; image coding; transform coding; transforms; watermarking; JPEG attacks; block based image coding transforms; blocking effects; digital image watermarking; feature extraction; inverse lapped orthogonal transform; watermark bits; Australia; Digital images; Discrete cosine transforms; Discrete transforms; Displays; Image coding; Image generation; Internet; Robustness; Watermarking;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2004. Proceedings. The 2004 IEEE Asia-Pacific Conference on

Print_ISBN

0-7803-8660-4

Type

conf

DOI

10.1109/APCCAS.2004.1413084

Filename

1413084