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Wavelets on Irregular Grids with Arbitrary Dilation Matrices, and Frames Atoms for L^2(R^d)

机译:具有任意扩张矩阵和框架的不规则网格上的小波   L ^ 2原子(R ^ d)

摘要

In this article, we develop a general method for constructing wavelets {|detA_j|^{1/2} g(A_jx-x_{j,k}): j in J, k in K}, on irregular lattices of the formX={x_{j,k} in R^d: j in J, k in K}, and with an arbitrary countable family ofinvertible dxd matrices {A_j in GL_d(R): j in J} that do not necessarily have agroup structure. This wavelet construction is a particular case of generalatomic frame decompositions of L^2(R^d) developed in this article, that allowother time frequency decompositions such as non-harmonic Gabor frames withnon-uniform covering of the Euclidean space R^d. Possible applications includeimage and video compression, speech coding, image and digital datatransmission, image analysis, estimations and detection, and seismology.
机译:在本文中,我们开发了一种在X ==的不规则晶格上构造小波{| detA_j | ^ {1/2} g(A_jx-x_ {j,k})的一般方法: {x_ {j,k}在R ^ d中:j在J中,k在K}中,并且具有任意可数的可逆dxd矩阵{GL_d(R)中的A_j:J中的j},它们不一定具有群结构。这种小波构造是本文开发的L ^ 2(R ^ d)的一般原子帧分解的一个特例,它允许进行其他时频分解,例如具有不均匀覆盖欧氏空间R ^ d的非谐波Gabor帧。可能的应用包括图像和视频压缩,语音编码,图像和数字数据传输,图像分析,估计和检测以及地震学。

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