Portugues
Ao contrário das informações de domínio de espaço oculto, o domínio de transformação esconde informações secretas no domínio de transformação vetorial de imagem. Os algoritmos de ocultação de informação baseados em domínio de transformação incluem ocultação de espectro difuso, ocultação discreta de transformação de cosseno (DCT), ocultação de transformação de onda (DWT) e assim por diante. A invenção tem o efeito benéfico de que o sinal de conversão de energia embutido oculto pode ser distribuído em cada componente do espaço de fase, o que é propício para garantir uma boa ocultação. Em segundo lugar, no domínio da transformação, algumas características do sistema visual podem ser mais facilmente combinadas com o processo de codificação da marca d'água. Finalmente, as informações ocultas podem suportar todos os tipos de pressão e distúrbios e ter forte segurança. No entanto, devido à capacidade limitada de ocultar dados, é difícil alcançar a grande capacidade de ocultar dados.Tailandês
ซึ่งแตกต่างจากข้อมูลที่ซ่อนอยู่ในเขตข้อมูลเชิงพื้นที่การเปลี่ยนแปลงเขตข้อมูลซ่อนข้อมูลลับในแปลงภาพเวกเตอร์โดเมน ซ่อนข้อมูลขั้นตอนวิธีขึ้นอยู่กับการแปลงโดเมนรวมถึงการซ่อนกระจายสเปกตรัม DCT และ DWT ฯลฯ ประโยชน์ของสิ่งประดิษฐ์ในปัจจุบันคือซ่อนพลังงานแปลงสัญญาณสามารถกระจายไปยังส่วนประกอบต่างๆของพื้นที่ระยะที่เป็นประโยชน์เพื่อให้แน่ใจว่าการปกปิดที่ดี ในที่สุดข้อมูลที่ซ่อนอยู่สามารถทนต่อแรงกดดันและการรบกวนและมีความปลอดภัยที่แข็งแกร่งอย่างไรก็ตามเนื่องจากความสามารถในการซ่อนข้อมูลจำกัดมันเป็นเรื่องยากที่จะบรรลุความสามารถในการซ่อนข้อมูล
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