Watermarking by numbers
Article Abstract:
A digital watermark can be seen with the help of a computer program, containing the same secret element that had been used for embedding the watermark. The watermark, bound to the original data, is resistant to common manipulations and is hard to remove. The watermark information is encoded within the original data through the rearrangement of existing noise or introduction of additional noise. Over-watermarking may lead to visible audible defects due to the high accumulation of noise. Watermarks which are dependent on the content can help in avoiding counterfeit of the original.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1996
User Contributions:
Comment about this article or add new information about this topic:
Croatie: le mois prochain a Vukovar
Article Abstract:
Heavy shelling is taking place in Krajina, territory which the Serbs took from Croatia in 1991 and the Croats have now recaptured, and life for civilians is very difficult. Serb people have left Krajina, blaming President Slobodan Milosevic for betraying them. Both the Croats and the Serbs are complaining of being provoked by the other side. Article text is in French.
Publication Name: Planning Week
Subject: Engineering and manufacturing industries
ISSN: 1352-8424
Year: 1995
User Contributions:
Comment about this article or add new information about this topic:
Puerto Vallarta's wild environs: at the Mexican resort, you can swim on a secluded beach, spy on gray whales and blue-footed boobies and sip marguerite in the evening
Article Abstract:
A woman traveling with her daughter and husband, describes their trip to the resort on Mexico's Pacific coast. They visited offshore islands, and along the way saw dolphins and whales spouting. Nesting boobies were on the islands, as well as crocodiles. Evening activities were also described.
Publication Name: The New York Times Magazine
Subject:
ISSN: 0028-7822
Year: 1997
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Limits to improvements? Fishing by numbers reveals its limits
- Abstracts: The fur fringe. Red-eyed tree frog. Joan Root
- Abstracts: Whose teeth? Humm-believable hummers. Whose eyes are on the hummingbird? The trials and tribulations of a nesting red-billed azurecrown
- Abstracts: Melted by mistakes. Trapped gas
- Abstracts: What a difference an ear makes. Biodiversity in Puerto Rico. On the slopes of Puerto Rico's Luquillo Mountains, Iguaca makes its last stand