CONSTRUCTION OF COMPACTLY SUPPORTED WAVELETS FROM TRIGONOMETRIC B-SPLINES

2011 ◽  
Vol 09 (05) ◽  
pp. 843-865 ◽  
Author(s):  
M. K. JENA
Keyword(s):  
Convex Hull ◽  
Autocorrelation Function ◽  
Scaling Function ◽  
Partition Of Unity ◽  
B Spline ◽  
B Splines ◽  
Compactly Supported ◽  
Odd Order ◽  
Subdivision Algorithm ◽  
The Scaling Function

We construct a class of semiorthogonal wavelets by taking a normalized trigonometric B-spline of any order as the scaling function. The construction is based on generalized Euler–Frobenius polynomial and generalized autocorrelation function. We also show that the odd order normalized trigonometric B-spline satisfies convex hull property as well as partition of unity property. Moreover, we also present a subdivision algorithm for the convolution of normalized trigonometric B-splines. Several examples of wavelet are also provided.

scholarly journals Maximum Vanishing Moment of Compactly Supported B-spline Wavelets

2019 ◽  
pp. 1-8
Author(s):  
Kanchan Lata Gupta ◽  
B. Kunwar ◽  
V. K. Singh
Keyword(s):  
Scaling Function ◽  
Simple Procedure ◽  
Smoothness Property ◽  
Vanishing Moments ◽  
B Spline ◽  
B Splines ◽  
Compactly Supported ◽  
Spline Wavelets ◽  
Vanishing Moment ◽  
Rule Order

Spline function is of very great interest in field of wavelets due to its compactness and smoothness property. As splines have specific formulae in both time and frequency domain, it greatly facilitates their manipulation. We have given a simple procedure to generate compactly supported orthogonal scaling function for higher order B-splines in our previous work. Here we determine the maximum vanishing moments of the formed spline wavelet as established by the new refinable function using sum rule order method.

scholarly journals ELLIPTIC SCALING FUNCTIONS AS COMPACTLY SUPPORTED MULTIVARIATE ANALOGS OF THE B-SPLINES

2014 ◽  
Vol 12 (02) ◽  
pp. 1450018 ◽  
Author(s):  
VICTOR G. ZAKHAROV
Keyword(s):  
Differential Operators ◽  
Scaling Function ◽  
Null Space ◽  
Partition Of Unity ◽  
Total Positivity ◽  
Scaling Functions ◽  
Algebraic Polynomials ◽  
B Splines ◽  
Compactly Supported ◽  
Elliptic Differential Operators

In the paper, we present a family of multivariate compactly supported scaling functions, which we call as elliptic scaling functions. The elliptic scaling functions are the convolution of elliptic splines, which correspond to homogeneous elliptic differential operators, with distributions. The elliptic scaling functions satisfy refinement relations with real isotropic dilation matrices. The elliptic scaling functions satisfy most of the properties of the univariate cardinal B-splines: compact support, refinement relation, partition of unity, total positivity, order of approximation, convolution relation, Riesz basis formation (under a restriction on the mask), etc. The algebraic polynomials contained in the span of integer shifts of any elliptic scaling function belong to the null-space of a homogeneous elliptic differential operator. Similarly to the properties of the B-splines under differentiation, it is possible to define elliptic (not necessarily differential) operators such that the elliptic scaling functions satisfy relations with these operators. In particular, the elliptic scaling functions can be considered as a composition of segments, where the function inside a segment, like a polynomial in the case of the B-splines, vanishes under the action of the introduced operator.

Riesz basis of wavelets constructed from trigonometric B-splines

2015 ◽  
Vol 13 (04) ◽  
pp. 419-436
Author(s):  
Mahendra Kumar Jena
Keyword(s):  
Differential Operator ◽  
Sobolev Space ◽  
Sobolev Spaces ◽  
Riesz Basis ◽  
Scaling Function ◽  
Wavelet Bases ◽  
B Splines ◽  
Compactly Supported ◽  
The Scaling Function

In this paper, we construct a class of compactly supported wavelets by taking trigonometric B-splines as the scaling function. The duals of these wavelets are also constructed. With the help of these duals, we show that the collection of dilations and translations of such a wavelet forms a Riesz basis of 𝕃2(ℝ). Moreover, when a particular differential operator is applied to the wavelet, it also generates a Riesz basis for a particular generalized Sobolev space. Most of the proofs are based on three assumptions which are mild generalizations of three important lemmas of Jia et al. [Compactly supported wavelet bases for Sobolev spaces, Appl. Comput. Harmon. Anal. 15 (2003) 224–241].

THE CONSTRUCTION OF A CLASS OF TRIVARIATE NONSEPARABLE COMPACTLY SUPPORTED WAVELETS

2009 ◽  
Vol 07 (03) ◽  
pp. 255-267 ◽  
Author(s):  
YONGDONG HUANG ◽  
SHOUZHI YANG ◽  
ZHENGXING CHENG
Keyword(s):  
General Theory ◽  
Mild Condition ◽  
Scaling Function ◽  
Moment Condition ◽  
Compactly Supported ◽  
Vanishing Moment ◽  
The Scaling Function

In this paper, under a mild condition, the construction of compactly supported [Formula: see text]-wavelets is obtained. Wavelets inherit the symmetry of the corresponding scaling function and satisfy the vanishing moment condition originating in the symbols of the scaling function. An example is also given to demonstrate the general theory.

Design of High Dimensional Nonseparable Compactly Supported Wavelets with Special Dilation Matrix

2012 ◽  
Vol 542-543 ◽  
pp. 547-550
Author(s):  
Lan Li
Keyword(s):  
Mild Condition ◽  
Scaling Function ◽  
New Method ◽  
High Dimensional ◽  
Moment Condition ◽  
Compactly Supported ◽  
Vanishing Moment ◽  
Dilation Matrix ◽  
The Scaling Function

In this paper, a new method to construct the compactly supported M- wavelet under a mild condition are given. The constructed wavelet satisfies the vanishing moment condition which is originated from the symbols of the scaling function.

A KIND OF 2D ISOTROPIC WAVELET AND ITS APPLICATION IN IMAGE PRIMITIVE DETECTION

2002 ◽  
Vol 11 (02) ◽  
pp. 123-135
Author(s):  
ZHENGXIN HOU ◽  
WENQUAN WANG ◽  
JINGHUI CHU
Keyword(s):  
Scaling Function ◽  
Wavelet Function ◽  
Experimental Results ◽  
B Spline ◽  
Multi Scale ◽  
Dyadic Wavelet ◽  
Custom Design ◽  
The Scaling Function

A custom-design of 2m-order nonorthogonal dyadic wavelet is proposed. The scaling function is 2m-order centered cardinal B-spline and the wavelet function dilated by factor 2 is proportional to the second difference of it. Taking them as 1D prototypes, the 2D minimum isotropic wavelet (MIW) along with a set of MIW filters and a bank of MIW packets are presented. The MIW filters are suitable for detecting edges and lines and the MIW packets can distinguish between multi-scale textures of an image. Some experimental results are given in this paper.

Construction of a Class of Nonseparable Compactly Supported Wavelets with Special Dilation Matrix in L2(R4)

2011 ◽  
Vol 393-395 ◽  
pp. 659-662
Author(s):  
Na Li
Keyword(s):  
Mild Condition ◽  
Scaling Function ◽  
Moment Condition ◽  
Compactly Supported ◽  
Vanishing Moment ◽  
Dilation Matrix ◽  
Novel Method ◽  
The Scaling Function

In this paper, a novel method to construct the compactly supported wavelet under a mild condition. The constructed wavelet satisfies the vanishing moment condition which is originated from the symbols of the scaling function.

scholarly journals A New Class of Curves of Rational B-Spline Type

2021 ◽  
Author(s):  
Mohamed ALLAOUI ◽  
Jamal ADETOLA ◽  
Wilfrid HOUEDANOU ◽  
Aurélien GOUDJO
Keyword(s):  
Convex Hull ◽  
Continuous Functions ◽  
B Spline ◽  
B Splines ◽  
Rational Bézier Curves ◽  
New Class ◽  
Rational Parametrization ◽  
New Family ◽  
Depth Analysis ◽  
Approximation Of Continuous Functions

A new class of rational parametrization has been developed and it was used to generate a new family of rational k functions B-splines which depends on an index α ∈ ]−∞ , 0[ ∪ ]1 , +∞[. This family of functions verifies, among other things, the properties of positivity, of partition of the unit and, for a given degree k, constitutes a true basis approximation of continuous functions. We loose, however, the regularity classical optimal linked to the multiplicity of nodes, which we recover in the asymptotic case, when α → ∞. The associated B-splines curves verify the traditional properties particularly that of a convex hull and we see a certain “conjugated symmetry” related to α. The case of open knot vectors without an inner node leads to a new family of rational Bezier curves that will be separately, object of in-depth analysis.

scholarly journals Adjust of energy with compactly supported orthogonal wavelet for steganographic algorithms using the scaling function

2013 ◽  
Vol 8 (4) ◽  
pp. 157-166 ◽  
Author(s):  
E Carvajal Gaacute mez Blanca ◽  
J Gallegos Funes Francisco ◽  
J Rosales Silva Alberto ◽  
L Loacute pez Bonilla Joseacute
Keyword(s):  
Scaling Function ◽  
Orthogonal Wavelet ◽  
Compactly Supported ◽  
The Scaling Function

scholarly journals Towards B-Spline Atomic Structure Calculations

Atoms ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 50
Author(s):  
Charlotte Froese Fischer
Keyword(s):  
Atomic Structure ◽  
Bound States ◽  
Virial Theorem ◽  
B Spline ◽  
B Splines ◽  
Self Consistent ◽  
History Of ◽  
Consistent Method ◽  
Atomic Structure Calculations ◽  
Structure Calculations

The paper reviews the history of B-spline methods for atomic structure calculations for bound states. It highlights various aspects of the variational method, particularly with regard to the orthogonality requirements, the iterative self-consistent method, the eigenvalue problem, and the related sphf, dbsr-hf, and spmchf programs. B-splines facilitate the mapping of solutions from one grid to another. The following paper describes a two-stage approach where the goal of the first stage is to determine parameters of the problem, such as the range and approximate values of the orbitals, after which the level of accuracy is raised. Once convergence has been achieved the Virial Theorem, which is evaluated as a check for accuracy. For exact solutions, the V/T ratio for a non-relativistic calculation is −2.

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