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Mostrar registro sencillo 2012-07-06T16:42:58Z 2012-07-06T16:42:58Z 1988
dc.description.abstract The problem of efficient signal communication at low data rates involves, in general, the encoding of the source for maximum data compression at the transmitter end, and the reconstruction using the received information and all the available a priori or side information at the receiver end. In this thesis, we propose an adaptive signal representation scheme, based on the use of multiple orthogonal basis sets, that exhibits very good potential in both the source encoding and the signal reconstruction problems. This representation leads naturally to the splitting of the signal mto additive components, each of which has a simpler description than the original process. In addition, it exhibits a structure similar to that of codebook based coding. As a result, a very compact signal representation can be achieved. A splitting procedure called recursive residual projection is proposed, and its performance evaluated for the separation of imagelike signals into basis-defined "edge" and "texture" components. The coding of these components leads to lower rates than those for transform coding methods. In reconstruction, the representation can be considered as a well-behaved constraint. This allowed for the development of the corresponding unique projection operator, with application to general iterative reconstruction methods. In particular, we also proposed a noise tolerant version of the operator, a so-called soft projection operator, capable of achieving convergence under noisy measurement conditions. Computer simulations in the representation, coding, and reconstruction applications corroborate the usefulness of this proposed representation. en
dc.format.extent 117 p. es
dc.language en es
dc.title Signal compression and reconstruction using multiple bases representation en
dc.type Tesis es
sedici.creator.person Safar, Félix G. es
sedici.description.note Tesis presentada por el investigador de la UNLP Félix G. Safar ante la Universidad Estatal de Virginia (Estados Unidos) para obtener el grado de Magister en Ingeniería Eléctrica. es
sedici.subject.materias Ingeniería es
sedici.subject.descriptores Ingeniería y tecnología eléctricas es
sedici.subject.descriptores Telecomunicaciones es
sedici.description.fulltext true es Virginia State University es
sedici.subtype Tesis de maestria es
sedici.rights.license Creative Commons Attribution 4.0 International (CC BY 4.0)
sedici.contributor.director Beex, A. A. es Master of Science in Electric Engineering es Virginia Polytechnic Institute es 1988
sedici2003.identifier USA-VSU-TPG-0000000001 es

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Creative Commons Attribution 4.0 International (CC BY 4.0) Excepto donde se diga explícitamente, este item se publica bajo la siguiente licencia Creative Commons Attribution 4.0 International (CC BY 4.0)