7 search results - page 1 / 2 » An image fragile watermark scheme based on chaotic image pat... |
AMC
2007
13 years 4 months ago
2007
Fragile watermarking techniques for digital content have been studied in the past few years. Fragile watermarks are used to determine if a piece of watermarked digital content has...
ICMCS
2006
IEEE
13 years 10 months ago
2006
IEEE
The distribution of the wavelet coefficients in 2-D discrete wavelet transform (DWT) subspaces can be well described by a Gaussian mixture statistical model. In this paper, a secr...
PCM
2001
Springer
13 years 9 months ago
2001
Springer
In video communications over error introducing channels, error concealment techniques are widely applied in video decoder for good subjective images output. However, a damaged MB ...
DICTA
2003
13 years 5 months ago
2003
Imperfect transmission of block-coded images often causes lost blocks. These blocks may contain very important information of image. In this paper a new error concealment scheme is...
IJIT
2004
13 years 5 months ago
2004
In this paper we investigate the watermarking authentication when applied to medical imagery field. We first give an overview of watermarking technology by paying attention to frag...