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Autor Valdés Morales, Antonio |
Documentos disponibles escritos por este autor (24)
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Castrillón López, Marco ; Valdés Morales, Antonio | 2001-05We show that projectively invariant evolution operators have unavoidable singularities. In particular, we see that there exists no non-singular projective evolution operator well-defined over straight lines nor conics.![]()
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The notion of a projective parallelism either on a differentiable or on a complex analytic manifold $M$ is introduced and its topological invariants and cohomological obstructions are studied. In the complex case a canonical linear connection is[...]![]()
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Gallego Bonet, Guillermo ; Ronda Prieto, José Ignacio ; Valdés Morales, Antonio ; García, Narciso | IEEE | 2007Given a projective reconstruction of a 3D scene, we address the problem of recovering the Euclidean structure of the scene in a recursive way. This leads to the application of Kalman filtering to the problem of camera autocalibration and to new [...]![]()
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Muñoz Masqué, Jaime ; Valdés Morales, Antonio | Università degli Studi di Roma "La Sapienza". Dipartamento di Matematica | 1997Let M be an n -dimensional manifold, ?:F(M)?M the linear frame bundle, and G a closed subgroup of GL(n,R) . As is known, there is a one-to-one correspondence between the G -structures on M and the sections of the bundle ? ¯ :F(M)/G?M . A fun[...]![]()
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Valdés Morales, Antonio ; Ronda Prieto, José Ignacio ; Gallego Bonet, Guillermo | 2004-04-04We introduce a geometrical object providing the same information as the absolute conic: the absolute line quadric (ALQ). After the introduction of the necessary exterior algebra and Grassmannian geometry tools, we analyze the Grassmannian of lin[...]![]()
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The number of functionally independent scalar invariants of arbitrary order of a generic pseudo-Riemannian metric on an n-dimensional manifold is determined.