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STARPVD - nowa, ulepszona metoda steganografii obrazowej oparta na różnicach wartości pikseli (PVD)

STARPVD - nowa, ulepszona metoda steganografii obrazowej oparta na różnicach wartości pikseli (PVD)

Sachin Arun Thanekar

71,90 €
IVA incluido
Disponible
Editorial:
KS OmniScriptum Publishing
Año de edición:
2026
Materia
Informática: cuestiones generales
ISBN:
9786630213478
71,90 €
IVA incluido
Disponible

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Sobre IBD

Obecnie ukrywanie tajnych wiadomości w obrazach cyfrowych jest najpowszechniej stosowaną techniką. Wykorzystuje ona słabości ludzkiego systemu wzrokowego (HVS). Istnieje szeroki wachlarz podejść do ukrywania informacji w obrazach. Badania nad opracowaniem skutecznych technik steganograficznych i steganalizy to proces ciągły. Metoda steganografii oparta na różnicowaniu wartości pikseli (PVD) polega na osadzaniu tajnych danych w obrazach w oparciu o różnice między sąsiednimi pikselami. W metodach steganografii opartych na różnicowaniu wartości pikseli (PVD) oraz różnicowaniu wartości trzech pikseli (TPVD) dane są ukrywane w blokach o wymiarach 2 x 2. Metody PVD i TPVD są podatne na ataki oparte na histogramie. W podejściu STARPVD wykorzystuje się bloki o wymiarach 3 x 3 pikseli. Dzięki temu powstaje osiem par pikseli. Dzięki temu w ramach tego podejścia ukrywa się więcej danych przy zachowaniu lepszej jakości wizualnej i wyższego poziomu bezpieczeństwa.

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