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Watermarking
A watermark is a recognizable image or pattern in paper used to determine authenticity. Watermark or watermarking may also refer to: Technology * Digital watermarking, a technique to embed data in digital audio, images or video ** Audio watermark, techniques for embedding hidden information into audio signals * Watermark (data file), a method for ensuring data integrity which combines aspects of data hashing and digital watermarking * Watermark (data synchronization), directory synchronization related programming terminology * Watermarking attack, an attack on disk encryption methods Films * ''Watermark'' (film), a 2013 documentary film directed by Jennifer Baichwal and Edward Burtynsky * ''Watermarks'' (film), a 2004 documentary film about the Viennese Hakoah swim team Music * ''Watermark'' (Art Garfunkel album), a 1977 album by Art Garfunkel * ''Watermark'' (Enya album), a 1988 album by Enya * Watermark (band), the CCM singing duo Nathan and Christy Nockels * "Watermark", ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Digital Watermarking
A digital watermark is a kind of marker covertly embedded in a noise-tolerant signal such as audio, video or image data. It is typically used to identify ownership of the copyright of such signal. "Watermarking" is the process of hiding digital information in a carrier signal; the hidden information should,Ingemar J. Cox: ''Digital watermarking and steganography''. Morgan Kaufmann, Burlington, MA, USA, 2008 but does not need to, contain a relation to the carrier signal. Digital watermarks may be used to verify the authenticity or integrity of the carrier signal or to show the identity of its owners. It is prominently used for tracing copyright infringements and for banknote authentication. Like traditional physical watermarks, digital watermarks are often only perceptible under certain conditions, e.g. after using some algorithm.Frank Y. Shih: ''Digital watermarking and steganography: fundamentals and techniques''. Taylor & Francis, Boca Raton, FL, USA, 2008 If a digital watermark ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Watermark (data File)
A watermark stored in a data file refers to a method for ensuring data integrity which combines aspects of data hashing and digital watermarking. Both are useful for tamper detection, though each has its own advantages and disadvantages. Data hashing A typical data hash will process an input file to produce an alphanumeric string unique to the data file. Should the file be modified, such as if one or more bit changes occur within this original file, the same hash process on the modified file will produce a different alphanumeric. Through this method, a trusted source can calculate the hash of an original data file and subscribers can verify the integrity of the data. The subscriber simply compares a hash of the received data file with the known hash from the trusted source. This can lead to two situations: the hash being the same or the hash being different. If the hash results are the same, the systems involved can have an appropriate degree of confidence to the integrity of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Audio Watermark
An audio watermark is a unique electronic identifier embedded in an audio signal, typically used to identify ownership of copyright. It is similar to a watermark on a photograph. Watermarking is the process of embedding information into a signal (e.g. audio, video or pictures) in a way that is difficult to remove. If the signal is copied, then the information is also carried in the copy. Watermarking has become increasingly important to enable copyright protection and ownership verification. One of the most secure techniques of audio watermarking is spread spectrum audio watermarking (SSW). In SSW, a narrow-band signal is transmitted over a much larger bandwidth such that the signal energy presented in any signal frequency is undetectable. Thus the watermark is spread over many frequency bands so that the energy in one band is undetectable. An interesting feature of this watermarking technique is that destroying it requires noise of high amplitude to be added to all frequency band ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WATERMARK
A watermark is an identifying image or pattern in paper that appears as various shades of lightness/darkness when viewed by transmitted light (or when viewed by reflected light, atop a dark background), caused by thickness or density variations in the paper. Watermarks have been used on postage stamps, currency, and other government documents to discourage counterfeiting. There are two main ways of producing watermarks in paper; the ''dandy roll process'', and the more complex ''cylinder mould process''. Watermarks vary greatly in their visibility; while some are obvious on casual inspection, others require some study to pick out. Various aids have been developed, such as ''watermark fluid'' that wets the paper without damaging it. A watermark is very useful in the examination of paper because it can be used for dating documents and artworks, identifying sizes, mill trademarks and locations, and determining the quality of a sheet of paper. The word is also used for digital ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Watermark
A watermark is an identifying image or pattern in paper that appears as various shades of lightness/darkness when viewed by transmitted light (or when viewed by reflected light, atop a dark background), caused by thickness or density variations in the paper. Watermarks have been used on postage stamps, currency, and other government documents to discourage counterfeiting. There are two main ways of producing watermarks in paper; the ''dandy roll process'', and the more complex ''cylinder mould process''. Watermarks vary greatly in their visibility; while some are obvious on casual inspection, others require some study to pick out. Various aids have been developed, such as ''watermark fluid'' that wets the paper without damaging it. A watermark is very useful in the examination of paper because it can be used for dating documents and artworks, identifying sizes, mill trademarks and locations, and determining the quality of a sheet of paper. The word is also used for digital ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Watermark Inc
A watermark is an identifying image or pattern in paper that appears as various shades of lightness/darkness when viewed by transmitted light (or when viewed by reflected light, atop a dark background), caused by thickness or density variations in the paper. Watermarks have been used on postage stamps, currency, and other government documents to discourage counterfeiting. There are two main ways of producing watermarks in paper; the ''dandy roll process'', and the more complex ''cylinder mould process''. Watermarks vary greatly in their visibility; while some are obvious on casual inspection, others require some study to pick out. Various aids have been developed, such as ''watermark fluid'' that wets the paper without damaging it. A watermark is very useful in the examination of paper because it can be used for dating documents and artworks, identifying sizes, mill trademarks and locations, and determining the quality of a sheet of paper. The word is also used for digital ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Digital On-screen Graphic
A digital on-screen graphic, digitally originated graphic (DOG, bug, or network bug) is a watermark-like station logo that most television broadcasters overlay over a portion of the screen area of their programs to identify the channel. They are thus a form of permanent visual station identification, increasing brand recognition and asserting ownership of the video signal. The graphic identifies the source of programming, even if it has been time-shifted—that is, recorded to videotape, DVD, or a digital personal video recorder such as TiVo. Many of these technologies allow viewers to skip or omit traditional between-programming station identification; thus the use of a DOG enables the station or network to enforce brand identification even when standard commercials are skipped. DOG watermarking helps to reduce off-the-air copyright infringement—for example, the distribution of a current series' episodes on DVD: the watermarked content is easily differentiated from "offic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Watermarking Attack
In cryptography, a watermarking attack is an attack on disk encryption methods where the presence of a specially crafted piece of data can be detected by an attacker without knowing the encryption key. Problem description Disk encryption suites generally operate on data in 512-byte sectors which are individually encrypted and decrypted. These 512-byte sectors alone can use any block cipher mode of operation (typically CBC), but since arbitrary sectors in the middle of the disk need to be accessible individually, they cannot depend on the contents of their preceding/succeeding sectors. Thus, with CBC, each sector has to have its own initialization vector (IV). If these IVs are predictable by an attacker (and the filesystem reliably starts file content at the same offset to the start of each sector, and files are likely to be largely contiguous), then there is a chosen plaintext attack which can reveal the existence of encrypted data. The problem is analogous to that of using block ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Watermark (film)
''Watermark'' is a 2012 Canadian documentary film by Jennifer Baichwal and Edward Burtynsky. It concerns the history and use of water. Burtynsky was previously the subject of Baichwal's 2006 documentary, ''Manufactured Landscapes''. The film features water use practices around the world, including multiple scenes in China and the United States, as well as segments shot in eight other countries. In China, the film chronicles the building of the Xiluodu Dam and flooding of its reservoir. The film was recorded in various international locations using ultra-high-definition equipment, including a prototype RED Epic that was hand assembled. The film won the Rogers Best Canadian Film Award at the 2013 Toronto Film Critics Association Awards, over ''The Dirties'' and '' Gabrielle'' and was named Best Feature Length Documentary at the 2nd Canadian Screen Awards in 2014.Kate Taylor, "Gabrielle named best picture at Canadian Screen Awards". ''The Globe and Mail ''The Globe and Mail ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Watermarks (film)
''Watermarks'' is a 2004 award-winning theatrical feature documentary co-written and directed by Yaron Zilberman as his directorial debut. The film reunites the champion women swimmers of the legendary Jewish sports club, Hakoah Vienna, who were forced to disband during the rise of fascism in 1930s Austria. Synopsis ''Watermarks'' tells the story of the champion women swimmers of Hakoah Vienna. Hakoah was founded in 1909 in response to the notorious Aryan Paragraph, which forbade Austrian sports clubs from accepting Jewish athletes. Its founders were eager to popularize sport among a community renowned for such great minds as Freud, Mahler and Zweig, but traditionally alien to physical recreation. Hakoah rapidly grew into one of Europe's biggest athletic clubs, achieving astonishing success in many diverse sports. In the 1930s Hakoah's best-known triumphs came from its women swimmers, who dominated national competitions in Austria. After the Anschluss, the political unification ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Watermark (Enya Album)
''Watermark'' is the second studio album by Irish singer, songwriter and musician Enya, released on 19 September 1988 by WEA. After the release of her previous album ''Enya'' (1986), she secured a recording contract with Warner after a chance meeting with chairman Rob Dickins, who had become a fan of her music. Her contract allowed her considerable artistic and creative freedom, with minimal interference from the label and no deadlines to have albums finished. Enya recorded ''Watermark'' in ten months with her longtime collaborators, manager, producer and arranger Nicky Ryan and his wife, lyricist Roma Ryan. It was initially recorded in Ireland in demo form before production relocated to London to re-record, mix, and master it digitally. ''Watermark'' features music in different styles, displaying Enya's sound of multi-tracked vocals with keyboards, percussion instruments, and elements of Celtic, ambient, and New-age music, though Enya believes her music does not belong in the la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Watermark (band)
Watermark was a Contemporary Christian singing duo composed of husband and wife Nathan and Christy Nockels. They were under Michael W. Smith's record label, Rocketown Records. History Watermark got their start recording under the name Sons and Daughters, with longtime friends Charlie and Kimber Hall ( Charlie Hall is a known worship leader with the Passion Conferences). They released their first record, ''Holy Roar'', with this lineup in 1995. In 1997, they released ''Open Me Up'' under the same name. That same year, Nathan and Christy began leading worship at Metro Bible Study at Houston's First Baptist Church. This is where Watermark began. Rocketown heard about Watermark around 1998, and soon signed them to the label. That same year, they released their first project as a part of Rocketown, an album called ''Watermark''. This disc is almost a complete re-record of the Sons and Daughters disc ''Open Me Up'', with only a few song changes. Their second album, ''All Things New'', ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
