Multi-resolutive sparse approximations of d-dimensional data
Identifieur interne : 000082 ( PascalFrancis/Corpus ); précédent : 000081; suivant : 000083Multi-resolutive sparse approximations of d-dimensional data
Auteurs : Giuseppe PataneSource :
- Computer vision and image understanding : (Print) [ 1077-3142 ] ; 2013.
Descripteurs français
- Pascal (Inist)
- Vision ordinateur, Image tridimensionnelle, Analyse image, Traitement image, Représentation fonction, Propriété spectrale, Analyse n dimensionnelle, Représentation parcimonieuse, Méthode itérative, Classification à vaste marge, Régularisation, Approximation L1, Equation non linéaire, Méthode noyau, Espace Hilbert, Fonction généralisée, Méthode moindre carré, Fonction base radiale, Matrice creuse, Théorie spectrale, Théorie graphe, Réduction dimension, ., Système ordre réduit.
English descriptors
- KwdEn :
- Computer vision, Dimension reduction, Function representation, Generalized function, Graph theory, Hilbert space, Image analysis, Image processing, Iterative method, Kernel method, L1 approximation, Least squares method, Multidimensional analysis, Non linear equation, Radial basis function, Reduced order systems, Regularization, Sparse matrix, Sparse representation, Spectral properties, Spectral theory, Tridimensional image, Vector support machine.
Abstract
This paper proposes an iterative computation of sparse representations of functions defined on d, which exploits a formulation of the sparsification problem equivalent to Support Vector Machine and based on Tikhonov regularization. Through this equivalent formulation, the sparsification reduces to an approximation problem with a Tikhonov regularizer, which selects the null coefficients of the resulting approximation. The proposed multi-resolutive sparsification achieves a different resolution in the approximation of the input data through a hierarchy of nested approximation spaces. The idea behind our approach is to combine a smooth and strictly convex approximation of the l1-norm with Tikhonov regularization and iterative solvers of linear/non-linear equations. Firstly, the iterative sparsification scheme is introduced in a Reproducing Kernel Hilbert Space with respect to its native norm. Then, the sparsification is generalized to arbitrary function spaces using the least-squares norm and radial basis functions. Finally, the discrete sparsification is derived using the eigendecomposition and the spectral properties of sparse matrices; in this case, the computational cost is O(nlogn), with n number of input points. Assuming that the data is supported on a (d - 1 )-dimensional manifold, we derive a variant of the sparsification scheme that guarantees the smoothness of the solution in the ambient and intrinsic space by using spectral graph theory and manifold learning techniques. Finally, we discuss the multi-resolutive approximation of d-dimensional data such as signals, images, and 3D shapes.
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Format Inist (serveur)
NO : | PASCAL 13-0182219 INIST |
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ET : | Multi-resolutive sparse approximations of d-dimensional data |
AU : | PATANE (Giuseppe); DEBLED-RENNESSON (Isabelle); DOMENJOUD (Eric); KERAUTRET (Bertrand); EVEN (Philippe) |
AF : | Consiglio Nazionale delle Ricerche, Istituto di Matematica Applicata e Tecnologie Informatiche/Genova/Italie (1 aut.); LORIA (Lorraine Research Laboratory in Computer Science and its Applications), UMR 7503, Lorraine University/Nancy/France (1 aut., 2 aut., 3 aut., 4 aut.) |
DT : | Publication en série; Niveau analytique |
SO : | Computer vision and image understanding : (Print); ISSN 1077-3142; Coden CVIUF4; Pays-Bas; Da. 2013; Vol. 117; No. 4; Pp. 418-428; Bibl. 62 ref. |
LA : | Anglais |
EA : | This paper proposes an iterative computation of sparse representations of functions defined on <double-struck R>d, which exploits a formulation of the sparsification problem equivalent to Support Vector Machine and based on Tikhonov regularization. Through this equivalent formulation, the sparsification reduces to an approximation problem with a Tikhonov regularizer, which selects the null coefficients of the resulting approximation. The proposed multi-resolutive sparsification achieves a different resolution in the approximation of the input data through a hierarchy of nested approximation spaces. The idea behind our approach is to combine a smooth and strictly convex approximation of the l1-norm with Tikhonov regularization and iterative solvers of linear/non-linear equations. Firstly, the iterative sparsification scheme is introduced in a Reproducing Kernel Hilbert Space with respect to its native norm. Then, the sparsification is generalized to arbitrary function spaces using the least-squares norm and radial basis functions. Finally, the discrete sparsification is derived using the eigendecomposition and the spectral properties of sparse matrices; in this case, the computational cost is O(nlogn), with n number of input points. Assuming that the data is supported on a (d - 1 )-dimensional manifold, we derive a variant of the sparsification scheme that guarantees the smoothness of the solution in the ambient and intrinsic space by using spectral graph theory and manifold learning techniques. Finally, we discuss the multi-resolutive approximation of d-dimensional data such as signals, images, and 3D shapes. |
CC : | 001D02A05; 001D04A04A2; 001D02B07B; 001D02A06 |
FD : | Vision ordinateur; Image tridimensionnelle; Analyse image; Traitement image; Représentation fonction; Propriété spectrale; Analyse n dimensionnelle; Représentation parcimonieuse; Méthode itérative; Classification à vaste marge; Régularisation; Approximation L1; Equation non linéaire; Méthode noyau; Espace Hilbert; Fonction généralisée; Méthode moindre carré; Fonction base radiale; Matrice creuse; Théorie spectrale; Théorie graphe; Réduction dimension; .; Système ordre réduit |
ED : | Computer vision; Tridimensional image; Image analysis; Image processing; Function representation; Spectral properties; Multidimensional analysis; Sparse representation; Iterative method; Vector support machine; Regularization; L1 approximation; Non linear equation; Kernel method; Hilbert space; Generalized function; Least squares method; Radial basis function; Sparse matrix; Spectral theory; Graph theory; Dimension reduction; Reduced order systems |
SD : | Visión ordenador; Imagen tridimensional; Análisis imagen; Procesamiento imagen; Representación función; Propiedad espectral; Análisis n dimensional; Representación parsimoniosa; Método iterativo; Máquina ejemplo soporte; Regularización; Aproximación L1; Ecuación no lineal; Método núcleo; Espacio Hilbert; Función generalizada; Método cuadrado menor; Función radial base; Matriz dispersa; Teoría espectral; Teoría grafo; Reducción dimensión; Reducción del orden de un modelo |
LO : | INIST-15463A.354000502487160100 |
ID : | 13-0182219 |
Links to Exploration step
Pascal:13-0182219Le document en format XML
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<front><div type="abstract" xml:lang="en">This paper proposes an iterative computation of sparse representations of functions defined on <sup>d</sup>
, which exploits a formulation of the sparsification problem equivalent to Support Vector Machine and based on Tikhonov regularization. Through this equivalent formulation, the sparsification reduces to an approximation problem with a Tikhonov regularizer, which selects the null coefficients of the resulting approximation. The proposed multi-resolutive sparsification achieves a different resolution in the approximation of the input data through a hierarchy of nested approximation spaces. The idea behind our approach is to combine a smooth and strictly convex approximation of the l<sub>1</sub>
-norm with Tikhonov regularization and iterative solvers of linear/non-linear equations. Firstly, the iterative sparsification scheme is introduced in a Reproducing Kernel Hilbert Space with respect to its native norm. Then, the sparsification is generalized to arbitrary function spaces using the least-squares norm and radial basis functions. Finally, the discrete sparsification is derived using the eigendecomposition and the spectral properties of sparse matrices; in this case, the computational cost is O(nlogn), with n number of input points. Assuming that the data is supported on a (d - 1 )-dimensional manifold, we derive a variant of the sparsification scheme that guarantees the smoothness of the solution in the ambient and intrinsic space by using spectral graph theory and manifold learning techniques. Finally, we discuss the multi-resolutive approximation of d-dimensional data such as signals, images, and 3D shapes.</div>
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<s5>36</s5>
</fC03>
<fC03 i1="22" i2="X" l="FRE"><s0>Réduction dimension</s0>
<s5>37</s5>
</fC03>
<fC03 i1="22" i2="X" l="ENG"><s0>Dimension reduction</s0>
<s5>37</s5>
</fC03>
<fC03 i1="22" i2="X" l="SPA"><s0>Reducción dimensión</s0>
<s5>37</s5>
</fC03>
<fC03 i1="23" i2="X" l="FRE"><s0>.</s0>
<s4>INC</s4>
<s5>82</s5>
</fC03>
<fC03 i1="24" i2="X" l="FRE"><s0>Système ordre réduit</s0>
<s4>CD</s4>
<s5>96</s5>
</fC03>
<fC03 i1="24" i2="X" l="ENG"><s0>Reduced order systems</s0>
<s4>CD</s4>
<s5>96</s5>
</fC03>
<fC03 i1="24" i2="X" l="SPA"><s0>Reducción del orden de un modelo</s0>
<s4>CD</s4>
<s5>96</s5>
</fC03>
<fN21><s1>161</s1>
</fN21>
<fN44 i1="01"><s1>OTO</s1>
</fN44>
<fN82><s1>OTO</s1>
</fN82>
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<server><NO>PASCAL 13-0182219 INIST</NO>
<ET>Multi-resolutive sparse approximations of d-dimensional data</ET>
<AU>PATANE (Giuseppe); DEBLED-RENNESSON (Isabelle); DOMENJOUD (Eric); KERAUTRET (Bertrand); EVEN (Philippe)</AU>
<AF>Consiglio Nazionale delle Ricerche, Istituto di Matematica Applicata e Tecnologie Informatiche/Genova/Italie (1 aut.); LORIA (Lorraine Research Laboratory in Computer Science and its Applications), UMR 7503, Lorraine University/Nancy/France (1 aut., 2 aut., 3 aut., 4 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>Computer vision and image understanding : (Print); ISSN 1077-3142; Coden CVIUF4; Pays-Bas; Da. 2013; Vol. 117; No. 4; Pp. 418-428; Bibl. 62 ref.</SO>
<LA>Anglais</LA>
<EA>This paper proposes an iterative computation of sparse representations of functions defined on <sup>d</sup>
, which exploits a formulation of the sparsification problem equivalent to Support Vector Machine and based on Tikhonov regularization. Through this equivalent formulation, the sparsification reduces to an approximation problem with a Tikhonov regularizer, which selects the null coefficients of the resulting approximation. The proposed multi-resolutive sparsification achieves a different resolution in the approximation of the input data through a hierarchy of nested approximation spaces. The idea behind our approach is to combine a smooth and strictly convex approximation of the l<sub>1</sub>
-norm with Tikhonov regularization and iterative solvers of linear/non-linear equations. Firstly, the iterative sparsification scheme is introduced in a Reproducing Kernel Hilbert Space with respect to its native norm. Then, the sparsification is generalized to arbitrary function spaces using the least-squares norm and radial basis functions. Finally, the discrete sparsification is derived using the eigendecomposition and the spectral properties of sparse matrices; in this case, the computational cost is O(nlogn), with n number of input points. Assuming that the data is supported on a (d - 1 )-dimensional manifold, we derive a variant of the sparsification scheme that guarantees the smoothness of the solution in the ambient and intrinsic space by using spectral graph theory and manifold learning techniques. Finally, we discuss the multi-resolutive approximation of d-dimensional data such as signals, images, and 3D shapes.</EA>
<CC>001D02A05; 001D04A04A2; 001D02B07B; 001D02A06</CC>
<FD>Vision ordinateur; Image tridimensionnelle; Analyse image; Traitement image; Représentation fonction; Propriété spectrale; Analyse n dimensionnelle; Représentation parcimonieuse; Méthode itérative; Classification à vaste marge; Régularisation; Approximation L1; Equation non linéaire; Méthode noyau; Espace Hilbert; Fonction généralisée; Méthode moindre carré; Fonction base radiale; Matrice creuse; Théorie spectrale; Théorie graphe; Réduction dimension; .; Système ordre réduit</FD>
<ED>Computer vision; Tridimensional image; Image analysis; Image processing; Function representation; Spectral properties; Multidimensional analysis; Sparse representation; Iterative method; Vector support machine; Regularization; L1 approximation; Non linear equation; Kernel method; Hilbert space; Generalized function; Least squares method; Radial basis function; Sparse matrix; Spectral theory; Graph theory; Dimension reduction; Reduced order systems</ED>
<SD>Visión ordenador; Imagen tridimensional; Análisis imagen; Procesamiento imagen; Representación función; Propiedad espectral; Análisis n dimensional; Representación parsimoniosa; Método iterativo; Máquina ejemplo soporte; Regularización; Aproximación L1; Ecuación no lineal; Método núcleo; Espacio Hilbert; Función generalizada; Método cuadrado menor; Función radial base; Matriz dispersa; Teoría espectral; Teoría grafo; Reducción dimensión; Reducción del orden de un modelo</SD>
<LO>INIST-15463A.354000502487160100</LO>
<ID>13-0182219</ID>
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