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Utvärdering utav benfintliga metoder för synlig digital vattenmärkning av statiska bilder

Bengtsson, Tobias (2012)
Computer Science and Engineering (BSc)
Abstract
Digital watermarking is done by adding a piece of data to a signal, which depending on the target media type, may be a picture, audio or video signal. The purpose of this additional signal is to provide a consistent signature linked to the original source which then remains through the act of copying. This allows the author to obstruct the act of theft by adding this signal to his or her creation. This report will focus on information regarding the visual watermarking of static visual images. Visual digital watermarking on this particular form of media is applied through adding an addional image structure on top of the original source. However there is several aspects to be considered when applying this kind of watermarking.
First off,... (More)
Digital watermarking is done by adding a piece of data to a signal, which depending on the target media type, may be a picture, audio or video signal. The purpose of this additional signal is to provide a consistent signature linked to the original source which then remains through the act of copying. This allows the author to obstruct the act of theft by adding this signal to his or her creation. This report will focus on information regarding the visual watermarking of static visual images. Visual digital watermarking on this particular form of media is applied through adding an addional image structure on top of the original source. However there is several aspects to be considered when applying this kind of watermarking.
First off, there are two kinds of watermarking, robust and fragile. Despite the fact that both of these types are intended to work with the same purpose in mind they achieve this through different means.
Detection is also a vital factor when speaking of digital water marking. This is because if you lack the possibility to detect your watermark, it might not be enough in legal disputes for you to be proclaimed the author.
Malicious attacks will always exist, making attempts to alter your watermark or perhaps even remove it entirely. To prevent these kinds of attacks, it is vital to have knowledge about how these attacks work, how to prevent them or if that is not possible, add an obstruction that makes the process of removing considerbly harder.
Returning to the subject of legal disputes, there are many issues that needs to be addressed in order to make sure that the mark you added is enough to provide evidence significant enough to prove your ownership. Knowing just what is needed to prove this is key to success.
In order to successfully provide a visual digital watermarking which considers all the above, this report will contain an analysis of several method used today to ensure that the method used is the method properly suited for the occasion, and also that it achieves the protection that is sought after. In addition to the aspects above the report will also contain information regarding the quality and colouration of pictures and watermarks as these subjects are crucial for making a secure watermark. (Less)
Please use this url to cite or link to this publication:
author
Bengtsson, Tobias
organization
year
type
M2 - Bachelor Degree
subject
keywords
synlig digital vattenmärkning bilder
language
Swedish
id
2518120
alternative location
http://portal.ch.lu.se/Campus.NET/Services/Publication/Export.aspx?id=1899&type=doc
date added to LUP
2012-04-26
date last changed
2012-06-28 11:21:06
@misc{2518120,
  abstract     = {Digital watermarking is done by adding a piece of data to a signal, which depending on the target media type, may be a picture, audio or video signal. The purpose of this additional signal is to provide a consistent signature linked to the original source which then remains through the act of copying. This allows the author to obstruct the act of theft by adding this signal to his or her creation. This report will focus on information regarding the visual watermarking of static visual images. Visual digital watermarking on this particular form of media is applied through adding an addional image structure on top of the original source. However there is several aspects to be considered when applying this kind of watermarking.
First off, there are two kinds of watermarking, robust and fragile. Despite the fact that both of these types are intended to work with the same purpose in mind they achieve this through different means.
Detection is also a vital factor when speaking of digital water marking. This is because if you lack the possibility to detect your watermark, it might not be enough in legal disputes for you to be proclaimed the author.
Malicious attacks will always exist, making attempts to alter your watermark or perhaps even remove it entirely. To prevent these kinds of attacks, it is vital to have knowledge about how these attacks work, how to prevent them or if that is not possible, add an obstruction that makes the process of removing considerbly harder.
Returning to the subject of legal disputes, there are many issues that needs to be addressed in order to make sure that the mark you added is enough to provide evidence significant enough to prove your ownership. Knowing just what is needed to prove this is key to success.
In order to successfully provide a visual digital watermarking which considers all the above, this report will contain an analysis of several method used today to ensure that the method used is the method properly suited for the occasion, and also that it achieves the protection that is sought after. In addition to the aspects above the report will also contain information regarding the quality and colouration of pictures and watermarks as these subjects are crucial for making a secure watermark.},
  author       = {Bengtsson, Tobias},
  keyword      = {synlig digital vattenmärkning bilder},
  language     = {swe},
  note         = {Student Paper},
  title        = {Utvärdering utav benfintliga metoder för synlig digital vattenmärkning av statiska bilder},
  year         = {2012},
}