Title :
Capacity for JPEG2000-to-JPEG2000 images watermarking
Author :
Wong, Peter H W ; Yeung, Gene Y M ; Au, Oscar C.
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ. of Sci. & Technol., Kowloon, China
Abstract :
A data capacity estimation method is proposed for image watermarking. The data capacity is maximum number of bits that can be embedded in an image such that the image has no perceptual loss. It is assumed that the input is a JPEG2000 image file and after watermark embedding, the image is JPEG2000-compressed using the same quantization factors. This is called JPEG2000-to-JPEG2000 (J2K2J2K) watermarking. A human visual systems (HVS) model is used to estimate the just noticeable difference (JND) of each discrete wavelet transform (DWT) coefficients.
Keywords :
data encapsulation; discrete wavelet transforms; image coding; quantisation (signal); watermarking; JPEG2000-to-JPEG2000 images watermarking; data capacity estimation method; data hiding capacity; discrete wavelet transform coefficients; human visual systems model; just noticeable difference; quantization factors; Data encapsulation; Discrete cosine transforms; Discrete transforms; Discrete wavelet transforms; Gold; Humans; Image coding; Karhunen-Loeve transforms; Quantization; Watermarking;
Conference_Titel :
Multimedia and Expo, 2003. ICME '03. Proceedings. 2003 International Conference on
Print_ISBN :
0-7803-7965-9
DOI :
10.1109/ICME.2003.1221659
