This paper describes a novel technique for embedding watermark bits into digital audio signals. The proposed method is based on the patchwork algorithm on the wavelet domain and does not need the original audio signal in the watermark detection. It uses the wavelet transform generated by the low-pass analysis filter h n whose length is 2 and h 0 = h 1 = 1… (More)
One of the important capabilities for a subdivision scheme is the reproducing property of circular shapes or parts of conics that are important analytical shapes in geometrical modelling. In this regards, the first goal of this study is to provide necessary and sufficient conditions for a non-stationary subdivision to have the reproducing property of… (More)
We start with a characterization of a pair of frames to be orthogonal in a shift-invariant space and then give a simple construction of a pair of orthogonal shift-invariant frames. This is applied to obtain a construction of a pair of Ga-bor orthogonal frames as an example. This is also developed further to obtain constructions of a pair of orthogonal… (More)
— The fusion of high-spectral/low-spatial resolution multispectral and low-spectral/high-spatial resolution panchro-matic satellite images is a very useful technique in various applications of remote sensing. Recently, some studies showed that a wavelet-based image fusion method provides high quality spectral content in fused images. However, most… (More)
We give two equivalent conditions under which a frame is a Riesz basis of a separable Hilbert space and obtain formulas of Riesz bounds in terms of the eigenvalues of the Gram matrices of finite subsets. ᭧ 1997 Academic Press
We show that the 'centered' Battle-Lemarié scaling function and wavelet of order n converge in L q (2 ≤ q ≤ ∞), uniformly in particular, to the Shannon scaling function and wavelet as n tends to the infinity.
We present a new family of compactly supported and symmetric biorthogonal wavelet systems. Each refinement mask in this family has tension parameter ω. When ω = 0, it becomes the minimal length biorthogonal Coifman wavelet system . Choosing ω away from zero, we can get better smoothness of the refinable functions at the expense of slightly larger… (More)