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STARPVD - Uma nova técnica melhorada de esteganografia de imagem PVD

STARPVD - Uma nova técnica melhorada de esteganografia de imagem PVD

Sachin Arun Thanekar

71,96 €
IVA incluido
Disponible
Editorial:
KS OmniScriptum Publishing
Año de edición:
2026
Materia
Informática: cuestiones generales
ISBN:
9786630228830
71,96 €
IVA incluido
Disponible

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Sobre IBD

Atualmente, a ocultação de mensagens secretas numa imagem digital é a técnica mais amplamente utilizada e comum. Esta técnica aproveita as fraquezas do Sistema Visual Humano (HVS). Existe uma vasta gama de abordagens para ocultar informação em imagens. A investigação para desenvolver técnicas robustas de esteganografia e esteganálise é um processo contínuo. O método de esteganografia Pixel Value Differencing (PVD) incorpora dados secretos em imagens com base nas diferenças entre píxeis vizinhos. Nos métodos de esteganografia Pixel Value Differencing e Tri Pixel Value Differencing (TPVD), os dados são ocultados em blocos quadrados de 2 x 2. Os métodos PVD e TPVD são vulneráveis a ataques baseados em histogramas. Na abordagem STARPVD, são utilizados blocos de 3 x 3 píxeis. Devido a isto, formam-se oito pares de píxeis. Assim, esta abordagem permite ocultar mais dados com melhor qualidade visual e maior segurança.

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