72 search results - page 9 / 15 » A DCT Domain Visible Watermarking Technique for Images |
MTA
2007
13 years 10 months ago
2007
This paper addresses a geometrically invariant watermarking method for digital images. Most previous watermarking algorithms perform weakly against geometric distortions, which des...
ICPR
2006
IEEE
14 years 4 months ago
2006
IEEE
This paper presents a technique, which determines whether an edge is visible for a human eye or not. First, a threshold function is built according to the optical characteristics ...
ICIP
2000
IEEE
14 years 12 months ago
2000
IEEE
Digital Watermarking is seen as a viable solution to authentication of multimedia data and hence its security, especially in a networked environment. In this paper we present a ne...
TCSV
2008
13 years 10 months ago
2008
In this correspondence, we describe a robust and effective content descriptor based on block edge patterns extracted directly in DCT domain, which is suitable for applications in J...
IVC
2006
13 years 10 months ago
2006
As most of MPEG and JPEG compression standards are DCT-based, we propose a simple, low-cost and fast algorithm to extract dominant colour features directly in DCT domain without i...