Title :
Wavelet domain watermarking capacity analysis
Author :
Zhang Fan ; Zhang Hongbin
Author_Institution :
Comput. Inst., Beijing Univ. of Technol., Chaoyang, China
Abstract :
Capacity is an important character of digital watermarking. Research of image watermarking capacity is to study how much information can be hidden in an image. Recently, wavelet transform has been applied widely in watermarking research as its excellent multi-resolution analysis property. According to watermarking methods in wavelet domain, watermark´s embedding and extracting realized in wavelet domain, we think that watermarking capacity should be analyzed in wavelet domain also. This paper presents a watermarking capacity analysis method based on content of wavelet subbands by using Watson quantization matrix and Noise Visibility Function (NVF), and discusses watermarking capacity of blind watermarking and non-blind watermarking in this scenario.
Keywords :
image resolution; image watermarking; matrix algebra; quantisation (signal); wavelet transforms; NVF; Noise Visibility Function; Watson quantization matrix; blind watermarking; multiresolution analysis property; nonblind watermarking; wavelet domain digital image watermarking capacity analysis; wavelet transform; Abstracts; Watermarking; Wavelet analysis; Wavelet domain;
Conference_Titel :
Signal Processing Conference, 2004 12th European
Conference_Location :
Vienna
Print_ISBN :
978-320-0001-65-7