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Técnicas de Esteganografia Para Sinais de ECG
Paperback
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ISBN10: 6206812065
ISBN13: 9786206812067
Publisher: Edicoes Nosso Conhecimento
Published: Apr 30 2025
Pages: 104
Weight: 0.33
Height: 0.25 Width: 6.00 Depth: 9.00
Language: Portuguese
ISBN13: 9786206812067
Publisher: Edicoes Nosso Conhecimento
Published: Apr 30 2025
Pages: 104
Weight: 0.33
Height: 0.25 Width: 6.00 Depth: 9.00
Language: Portuguese
Os serviços de cuidados de saúde à distância são práticas médicas modernas que utilizam as telecomunicações para efetuar o diagnóstico, o tratamento e o acompanhamento dos doentes à distância. O acesso a estes serviços de cuidados de saúde a nÃvel local e mundial através de redes públicas não seguras representa uma enorme ameaça para a segurança das informações confidenciais dos doentes. Este trabalho tem por objetivo proteger as informações confidenciais dos pacientes. Entre as várias técnicas de ocultação de dados existentes, como a encriptação, a esteganografia, a marca de água, etc., a esteganografia é adoptada para ocultar as informações confidenciais dos doentes em caraterÃsticas menos sensÃveis do sinal de cobertura sem perturbar a sua morfologia. Para além de várias imagens médicas e sinais fisiológicos como hospedeiros eficazes para ocultar informações confidenciais, o sinal de eletrocardiograma (ECG) é utilizado como sinal de cobertura para esteganografia. São propostas três técnicas diferentes, cada uma no domÃnio espacial, no domÃnio da frequência e num domÃnio combinado espaço-frequência, para ocultar informações confidenciais no sinal ECG. Todas as três técnicas alcançaram com êxito os atributos básicos da esteganografia, ou seja, robustez, impercetibilidade e capacidade de incorporação.
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