نتایج جستجو برای: general linear chirplet transform glct

تعداد نتایج: 1246548  

Journal: :Circuits, Systems, and Signal Processing 2018

Journal: :Transactions of the American Mathematical Society 1985

1992
Peter W. Michor

We interpret the setting for a Radon transform as a submanifold of the space of generalized functions, and compute its extrinsic curvature: it is the Hessian composed with the Radon transform. 1. The general setting. Let M and Σ be smooth finite dimensional manifolds. Let m = dim(M). A linear mapping R : C∞ c (M)→ C∞(Σ) is called a (generalized) Radon transform if it is given in the following w...

Journal: :Journal of the Optical Society of America. A, Optics, image science, and vision 2003
Soo-Chang Pei Jian-Jiun Ding

The offset Fourier transform (offset FT), offset fractional Fourier transform (offset FRFT), and offset linear canonical transform (offset LCT) are the space-shifted and frequency-modulated versions of the original transforms. They are more general and flexible than the original ones. We derive the eigenfunctions and the eigenvalues of the offset FT, FRFT, and LCT. We can use their eigenfunctio...

Journal: :Applied and Computational Harmonic Analysis 2008

1997
Onur G. Guleryuz Michael T. Orchard

The transform coding of images is analyzed from a common standpoint in order to generate a framework for the design of optimal transforms. It is argued that all transform coders are alike in the way they manipulate the data structure formed by transform coefficients. A general energy compaction measure is proposed to generate optimized transforms with desirable characteristics particularly suit...

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