Truly randon number generator from ocean events

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorFernandes, Leandro Augusto Frata-
Autor(es): dc.contributorFerreira, Marcos de Oliveira Lage-
Autor(es): dc.contributorTorreão, José Ricardo de Almeida-
Autor(es): dc.creatorMarques Netto, Gustavo-
Data de aceite: dc.date.accessioned2024-07-11T18:13:38Z-
Data de disponibilização: dc.date.available2024-07-11T18:13:38Z-
Data de envio: dc.date.issued2018-02-07-
Data de envio: dc.date.issued2018-02-07-
Data de envio: dc.date.issued2018-
Fonte completa do material: dc.identifierhttps://app.uff.br/riuff/handle/1/5735-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/766202-
Descrição: dc.descriptionRandom number are constantly present in our daily lives. They can be used in the lottery, making you rich, or in encryption algorithms, responsible for protecting billions of bytes of data every day. However, generating this numbers is not a simple process. A machine like a computer is deterministic by nature and random numbers are supposed to be the opposite, unpredictable. In this work, we propose a technique that generates truly random numbers from natural phenomena. In this case, images from the movement of the ocean water captured by a camera. We make the assumption that the wind influence over the water creates enough randomness, so the generation passes a set of statistical tests that assure the quality of the generated numbers. In fact, the normal vectors of the water surface are used to generate the numbers. We employ geometric reconstruction to minimize the image distortions introduced by to the perspective of an area of the water surface. The reconstruction also results in the viewer direction for the rectified image. This is used in a new approach for Shape from Shading. In this technique, based on the work of Shah and Ping [1], we remove the necessity for the illumination direction as we deal with outdoor scenes in this work.-
Formato: dc.formatapplication/pdf-
Idioma: dc.languageen-
Direitos: dc.rightsopenAccess-
Direitos: dc.rightshttp://creativecommons.org/licenses/by-nc-nd/3.0/br/-
Direitos: dc.rightsCC-BY-SA-
Palavras-chave: dc.subjectRandom numbers-
Palavras-chave: dc.subjectShape from shading-
Palavras-chave: dc.subjectTruly random number generation-
Palavras-chave: dc.subjectGeometric reconstruction-
Palavras-chave: dc.subjectSurface reconstruction-
Palavras-chave: dc.subjectProcessamento de imagem-
Palavras-chave: dc.subjectCriptografia-
Título: dc.titleTruly randon number generator from ocean events-
Tipo de arquivo: dc.typeTrabalho de conclusão de curso-
Aparece nas coleções:Repositório Institucional da Universidade Federal Fluminense - RiUFF

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