Line watermark embedding method for affine transformed images

Pantuwong, Natapon; Chotikakamthorn, Nopporn

doi:10.1109/ISSPA.2007.4555481

Line watermark embedding method for affine transformed images

Author(s)

Pantuwong, Natapon

Chotikakamthorn, Nopporn

Date Issued

December 1, 2007

Type

Conference Paper

DOI

10.1109/ISSPA.2007.4555481

Abstract

This paper describes a new content-based affine-invariant digital watermarking technique. With the proposed embedding and detecting scheme, the watermark patterns are located along the lines constructed from pairs of image's salient points. By using a pair of feature points, the method can perform a search for a watermark faster than other schemes that require at least three correspondence points. The problem of limited embedding capacity, which results in weak robustness, is addressed. A solution to increase the method robustness using multiple line averaging is described. In addition, by utilizing a certain constraint on cropping pattern, the method can be used to provide an estimation of a cropping boundary. ©2007 IEEE.

Citation

2007 9th International Symposium on Signal Processing and Its Applications Isspa 2007 Proceedings, 2007