An Improved Robust and Adaptive Watermarking Algorithm Based on DCT
Título del documento: An Improved Robust and Adaptive Watermarking Algorithm Based on DCT
Revista: Journal of applied research and technology
Base de datos: PERIÓDICA
Número de sistema: 000364824
ISSN: 1665-6423
Autores: 1
1
1
Instituciones: 1Dalian University, Key Laboratory of Advanced Design and Intelligent Computing, Dalian, Liaoning. China
Año:
Periodo: Jun
Volumen: 10
Número: 3
Paginación: 405-415
País: México
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Experimental, aplicado
Resumen en inglés This paper proposes an improved watermarking algorithm based on DCT (Discrete Cosine Transform). We carried out the algorithm as described as follows. First, we extended both rows and ranks of the watermark by using the proposed method before the embedding stage. After expansion, Sine chaotic system is employed in encrypting the watermark. In the embedding stage, an effective and adaptive embedding method is proposed to embed the watermark into the blocked DCT coefficients. Experimental results demonstrate that the proposed algorithm in this paperworks well in resisting both geometry attack and noise attack. It also does well in recovering the watermark after stego image suffered from JPG compression
Disciplinas: Ciencias de la computación
Palabras clave: Procesamiento de datos,
Seguridad en cómputo,
Marca de agua,
Encriptamiento
Keyword: Computer science,
Data processing,
Computing security,
Watermark,
Encryption
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