25 search results - page 4 / 5 » A detection algorithm for zero-quantized DCT coefficients in... |
ISCAS
2002
IEEE
13 years 11 months ago
2002
IEEE
This report proposes a new coding method, which realizes lossless, near-lossless and lossy coding with a unified single algorithm. The method is based on a lifting-structured loss...
IWDW
2004
Springer
13 years 11 months ago
2004
Springer
: Invertible authentication techniques have been used in some special applications (such as medical or military) where original data can be recovered after authenticated. In this p...
ICIP
2001
IEEE
14 years 7 months ago
2001
IEEE
In this paper we propose a new watermarking technique where the watermark is embedded according to two keys. The first key is used to embed a code bit in a block of pixels. The se...
ICIP
1997
IEEE
13 years 9 months ago
1997
IEEE
A novel algorithm is described for coding objects in video compression systems which gives complete control over the bit allocation to the video objects. The method is evaluated b...
INFORMATICALT
2006
13 years 6 months ago
2006
In this paper, a digital watermarking algorithm for copyright protection based on the concept of embed digital watermark and modifying frequency coefficients in discrete wavelet tr...