Sparse Data Representation on the Sphere using the Easy PathWavelet Transform

Gerlind Plonka (1) , Daniela Rosca (2)

1 Department of Mathematics
2 Department of Mathematics

In this paper we consider the Easy PathWavelet Transform (EPWT) on spherical triangulations. The EPWT has been introduced in [7] in order to obtain sparse image representations. It is a locally adaptive transform that works along pathways through the array of function values and exploits the local correlations of the data in a simple appropriate manner. In our approach the usual one-dimensional discrete wavelet transform (DWT), orthogonal or biorthogonal, can be applied.

Domaines: Analyse classique [math.CA]; Traitement du signal et de l'image [eess.SP]; Traitement du signal et de l'image [eess.SP]

Gerlind Plonka, Daniela Rosca. Sparse Data Representation on the Sphere using the Easy PathWavelet Transform. SAMPTA'09, May 2009, Marseille, France. pp.General session. ⟨hal-00453284⟩