Comparação de técnicas de esteganografia aplicadas a marca d'água digital

Detalhes bibliográficos
Ano de defesa: 2016
Autor(a) principal: ROMERO, Bruno Alves lattes
Orientador(a): JORGE, David Calhau lattes
Banca de defesa: Não Informado pela instituição
Tipo de documento: Dissertação
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: Universidade Federal do Triângulo Mineiro
Programa de Pós-Graduação: Programa de Mestrado Profissional em Inovação Tecnológica
Departamento: Instituto de Ciências Tecnológicas e Exatas - ICTE::Programa de Mestrado Profissional em Inovação Tecnológica
País: Brasil
Palavras-chave em Português:
Esteganografia
Marca d’agua digital
Imagem
Palavras-chave em Inglês:
Steganography
Digital watermark
Image
Área do conhecimento CNPq:
Metodologias e Técnicas da Computação
Link de acesso: http://bdtd.uftm.edu.br/handle/tede/347
Resumo: Steganography comes from the Greek, meaning, "hidden writing", for centuries, people have pursued ways to communicate securely. The digital watermark makes use of steganography techniques to ensure the authenticity and authorship of a picture or other digital media, through its incorporation. However, the use of watermarks in images suffers with attacks and characteristics by itself, such as compression. This study aims to use different steganographics algorithms applied and adapted to work with digital watermark in color images. The objective is to find the most efficient way to ensure the authenticity of a digital image, focusing on robustness. This work have submitting various algorithms to several attacks and situations, getting as a result the watermark previously incorporated and metrics to evaluate objectively and subjectively the performance of each process. The algorithms were subjected to a variety of different images and watermarks allowing an overview of the each one’s behavior in several environments. None of the attacks was capable to destroy the watermark without affecting image quality. The Fusion and DCT AC algorithms presented the best overall performance, while the JPEG format is a challenge for steganography.
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spelling JORGE, David Calhauhttp://lattes.cnpq.br/2966842034513863http://lattes.cnpq.br/2064055859130745ROMERO, Bruno Alves2016-08-05T20:14:05Z2016-02-15ROMERO, Bruno Alves. Comparação de técnicas de esteganografia aplicadas a marca d'água digital. 2016. 67f. Dissertação (Mestrado em Inovação Tecnológica) - Programa de Mestrado Profissional em Inovação Tecnológica, Universidade Federal do Triângulo Mineiro, Uberaba, 2016.http://bdtd.uftm.edu.br/handle/tede/347Steganography comes from the Greek, meaning, "hidden writing", for centuries, people have pursued ways to communicate securely. The digital watermark makes use of steganography techniques to ensure the authenticity and authorship of a picture or other digital media, through its incorporation. However, the use of watermarks in images suffers with attacks and characteristics by itself, such as compression. This study aims to use different steganographics algorithms applied and adapted to work with digital watermark in color images. The objective is to find the most efficient way to ensure the authenticity of a digital image, focusing on robustness. This work have submitting various algorithms to several attacks and situations, getting as a result the watermark previously incorporated and metrics to evaluate objectively and subjectively the performance of each process. The algorithms were subjected to a variety of different images and watermarks allowing an overview of the each one’s behavior in several environments. None of the attacks was capable to destroy the watermark without affecting image quality. The Fusion and DCT AC algorithms presented the best overall performance, while the JPEG format is a challenge for steganography.Esteganografia vem do grego, significando “a escrita oculta”, e durante séculos as pessoas têm buscado meios de se comunicar de maneira segura. A marca d’água digital faz uso de técnicas de esteganografia para garantir a autenticidade e autoria de uma imagem ou outra mídia digital, por meio de sua incorporação. Entretanto, o uso de marcas d’água em imagens sofre com ataques e características próprias, como a compressão. O presente trabalho visa utilizar distintos algoritmos esteganográficos aplicados e adaptados para trabalhar com marca d’água digital em imagens coloridas. Objetiva-se encontrar o meio mais eficiente para garantir a autenticidade de uma imagem digital, com foco na robustez. Faz-se aqui um estudo de caso submetendo algoritmos variados a situações de ataques diversos, recebendo como resultado a marca d’água previamente incorporada e métricas que permitam avaliar de maneira objetiva e subjetiva o desempenho de cada processo. Os algoritmos foram submetidos a imagens variadas e marcas d’água diversas possibilitando uma visão geral do comportamento dos algoritmos em ambientes diversos. Nenhum dos ataques destruiu a marca d’água sem afetar a qualidade da imagem. Os algoritmos Fusion e DCT AC apresentaram a melhor performance geral, enquanto o formato JPEG se mostrou desafiador para a esteganografia.application/pdfhttp://bdtd.uftm.edu.br/retrieve/1739/Dissert%20Bruno%20A%20Romero2.pdf.jpghttp://bdtd.uftm.edu.br/retrieve/1741/Dissert%20Bruno%20A%20Romero3.pdf.jpghttp://bdtd.uftm.edu.br/retrieve/1743/Dissert%20Bruno%20A%20Romero4.pdf.jpghttp://bdtd.uftm.edu.br/retrieve/1745/Dissert%20Bruno%20A%20Romero5.pdf.jpgporUniversidade Federal do Triângulo MineiroPrograma de Mestrado Profissional em Inovação TecnológicaUFTMBrasilInstituto de Ciências Tecnológicas e Exatas - ICTE::Programa de Mestrado Profissional em Inovação TecnológicaAKAR, F.; YALMAN, Y.; VAROL, H. S. Data hiding in digital images using a partial optimization technique based on the classical LSB method. Turk. J. Electr. Eng. Comput. Sci., v. 21, p. 2037-2047, 2013. ISSN 1300-0632. ALTAAY, A. A. 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dc.title.por.fl_str_mv Comparação de técnicas de esteganografia aplicadas a marca d'água digital
title Comparação de técnicas de esteganografia aplicadas a marca d'água digital
spellingShingle Comparação de técnicas de esteganografia aplicadas a marca d'água digital
ROMERO, Bruno Alves
Esteganografia
Marca d’agua digital
Imagem
Steganography
Digital watermark
Image
Metodologias e Técnicas da Computação
title_short Comparação de técnicas de esteganografia aplicadas a marca d'água digital
title_full Comparação de técnicas de esteganografia aplicadas a marca d'água digital
title_fullStr Comparação de técnicas de esteganografia aplicadas a marca d'água digital
title_full_unstemmed Comparação de técnicas de esteganografia aplicadas a marca d'água digital
title_sort Comparação de técnicas de esteganografia aplicadas a marca d'água digital
author ROMERO, Bruno Alves
author_facet ROMERO, Bruno Alves
author_role author
dc.contributor.advisor1.fl_str_mv JORGE, David Calhau
dc.contributor.advisor1Lattes.fl_str_mv http://lattes.cnpq.br/2966842034513863
dc.contributor.authorLattes.fl_str_mv http://lattes.cnpq.br/2064055859130745
dc.contributor.author.fl_str_mv ROMERO, Bruno Alves
contributor_str_mv JORGE, David Calhau
dc.subject.por.fl_str_mv Esteganografia
Marca d’agua digital
Imagem
topic Esteganografia
Marca d’agua digital
Imagem
Steganography
Digital watermark
Image
Metodologias e Técnicas da Computação
dc.subject.eng.fl_str_mv Steganography
Digital watermark
Image
dc.subject.cnpq.fl_str_mv Metodologias e Técnicas da Computação
description Steganography comes from the Greek, meaning, "hidden writing", for centuries, people have pursued ways to communicate securely. The digital watermark makes use of steganography techniques to ensure the authenticity and authorship of a picture or other digital media, through its incorporation. However, the use of watermarks in images suffers with attacks and characteristics by itself, such as compression. This study aims to use different steganographics algorithms applied and adapted to work with digital watermark in color images. The objective is to find the most efficient way to ensure the authenticity of a digital image, focusing on robustness. This work have submitting various algorithms to several attacks and situations, getting as a result the watermark previously incorporated and metrics to evaluate objectively and subjectively the performance of each process. The algorithms were subjected to a variety of different images and watermarks allowing an overview of the each one’s behavior in several environments. None of the attacks was capable to destroy the watermark without affecting image quality. The Fusion and DCT AC algorithms presented the best overall performance, while the JPEG format is a challenge for steganography.
publishDate 2016
dc.date.accessioned.fl_str_mv 2016-08-05T20:14:05Z
dc.date.issued.fl_str_mv 2016-02-15
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dc.identifier.citation.fl_str_mv ROMERO, Bruno Alves. Comparação de técnicas de esteganografia aplicadas a marca d'água digital. 2016. 67f. Dissertação (Mestrado em Inovação Tecnológica) - Programa de Mestrado Profissional em Inovação Tecnológica, Universidade Federal do Triângulo Mineiro, Uberaba, 2016.
dc.identifier.uri.fl_str_mv http://bdtd.uftm.edu.br/handle/tede/347
identifier_str_mv ROMERO, Bruno Alves. Comparação de técnicas de esteganografia aplicadas a marca d'água digital. 2016. 67f. Dissertação (Mestrado em Inovação Tecnológica) - Programa de Mestrado Profissional em Inovação Tecnológica, Universidade Federal do Triângulo Mineiro, Uberaba, 2016.
url http://bdtd.uftm.edu.br/handle/tede/347
dc.language.iso.fl_str_mv por
language por
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repository.name.fl_str_mv Biblioteca Digital de Teses e Dissertações da UFTM - Universidade Federal do Triangulo Mineiro (UFTM)
repository.mail.fl_str_mv bdtd@uftm.edu.br||bdtd@uftm.edu.br
_version_ 1854401111623991296

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