Multi-marcação de vídeo baseada em marca d'água LWT-SVD usando abordagem lateral

• Ano de defesa: 2012
• Autor(a) principal: Fung, Charles Way Hun
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Tecnológica Federal do Paraná; Curitiba; Programa de Pós-Graduação em Engenharia Elétrica e Informática Industrial
• Palavras-chave em Português: Mídia digital; Marcas d'água; Sistemas de segurança; Wavelets (Matemática); Autenticação; Digital media; Watermarks; Security systems; Wavelets (Mathematics); Authentication
• Link de acesso: http://repositorio.utfpr.edu.br/jspui/handle/1/328

Digital videos have become the most used way to communicate, however these data are easily copied and distributed. That happen due the growing number of tools that are create with this goal, causing breach of copyright and illegal distribution of content. The most studied solution that can solve this problem are the digital watermarks that provide security like authentication and tamper detection. In this work, we developed a new method of embedding and extracting watermarks in a video using a process called side view. This process allows watermark a block of frames. The several watermarks embedded can be used like redundance to grow the robustness of the method against attacks. The tests followed the standard benchmarks Vidmark and Stirmark that show the performance of the method in keep the watermark even after attacks.