Results 321 to 330 of about 2,415,687 (382)

Vigorous image steganography with transforms, wavelet transforms and hybrid wavelet transforms

2014 Annual IEEE India Conference (INDICON), 2014
In this paper, performance of orthogonal transforms with their wavelet transforms and Hybrid wavelet transforms are compared for image steganography. Here, wavelet transforms and Hybrid wavelet transforms are proposed to be used for Image steganography. A set of 10 Cover images for hiding 10 varied message images has been used for research.
Smita S. Chavan, Sudeep D. Thepade
openaire   +2 more sources

Overcomplete Wavelet Transforms

1998
This chapter deals with discrete wavelet transforms that are formed from the general samples of a continuous wavelet transform. Conceptually, there are few constraints on the spacing between sample points throughout the time—scale plane; however, computational consideration is restricted here to an interesting subclass of sampling sets that allow for ...
Anthony Teolis, Anthony Teolis
openaire   +2 more sources

Discrete Lattice Wavelet Transform

IEEE Transactions on Circuits and Systems II: Express Briefs, 2007
The discrete wavelet transform (DWT) has gained a wide acceptance in denoising and compression coding of images and signals. In this work we introduce a discrete lattice wavelet transform (DLWT). In the analysis part, the lattice structure contains two parallel transmission channels, which exchange information via two crossed lattice filters.
Olkkonen, H., Olkkonen, Juuso
openaire   +4 more sources

The Wavelet Transform

1993
Chapter 1 presented the concepts involved with wavelet theory, especially the scaling operation, and avoided all of the mathematical rigor. This section supports the conceptual statements by providing the mathematical justification. General, continuous-time wavelet transforms are initially discussed.
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Wavelet Transforms and Wavelet Approximations

1994
We summarize properties of classical wavelet transforms and Wavelet Stieltjes transforms. Wavelet approximation problems are also considered for Wavelet Stieltjes transforms. This will give rise to some characterizations of general signals.
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TRANSFORMS, WAVELETS

2001
Nomenclature a scale f frequency fs sampling frequency G(f) Fourier transform of g(t) Image Fourier transform of Image(t) S(t, f) Short-time Fourier transform x(t) continuous time signal w(t) windowing function ?(n) Kronecker delta function ?f sampling intervals in frequency ?t sampling intervals in ...
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Biorthogonal Wavelet Transforms

2014
Wavelets in the polynomial and discrete spline spaces were introduced in Chaps. 8 and 10, respectively. In both cases, the wavelets’ design and implementation of the transforms were associated with perfect reconstruction (PR) filter banks. In this chapter, those associations are discussed in more detail.
Amir Averbuch, Valery A. Zheludev, Pekka Neittaanmäki   +2 more
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The wavelet transform, time-frequency localization and signal analysis

IEEE Transactions on Information Theory, 1990
I. Daubechies
semanticscholar   +1 more source

Image coding using wavelet transform

IEEE Transactions on Image Processing, 1992
M. Antonini, M. Barlaud, P. Mathieu, I. Daubechies   +3 more
semanticscholar   +1 more source

The dual-tree complex wavelet transform

IEEE Signal Processing Magazine, 2005
I. Selesnick, Richard Baraniuk, N. Kingsbury   +2 more
semanticscholar   +1 more source