243 search results - page 2 / 49 » Periodic wavelet frames |
ICIP
2009
IEEE
14 years 9 months ago
2009
IEEE
We introduce an Nth-order extension of the Riesz transform in d dimensions. We prove that this generalized transform has the following remarkable properties: shift-invariance, sca...
VTC
2007
IEEE
14 years 2 months ago
2007
IEEE
— In this paper, we characterize the achievable performance of a wavelet encoding-based videophone system, which further compresses and protects the wavelet-based video codec’s...
TIP
2008
13 years 7 months ago
2008
A distinction is usually made between wavelet bases and wavelet frames. The former are associated with a one-to-one representation of signals, which is somewhat constrained but mos...
JAT
2010
13 years 6 months ago
2010
A common problem in applied mathematics is that of finding a function in a Hilbert space with prescribed best approximations from a finite number of closed vector subspaces. In ...
JAT
2007
13 years 7 months ago
2007
An irregular wavelet frame has the form W(ψ, Λ) = {a−1/2 ψ(x a − b)}(a,b)∈Λ, where ψ ∈ L2 (R) and Λ is an arbitrary sequence of points in the affine group A = R+ × ...