Ponencia
Programmable retinal dynamics in a CMOS mixed-signal array processor chip
Autor/es | Carmona Galán, Ricardo
Jiménez Garrido, Francisco José Domínguez Castro, Rafael Espejo Meana, Servando Carlos Rodríguez Vázquez, Ángel Benito |
Departamento | Universidad de Sevilla. Departamento de Electrónica y Electromagnetismo |
Fecha de publicación | 2003 |
Fecha de depósito | 2020-01-29 |
Publicado en |
|
ISBN/ISSN | 0277-786X |
Resumen | The low-level image processing that takes place in the retina is intended to compress the relevant visual information to a manageable size. The behavior of the external layers of the biological retina has been successfully ... The low-level image processing that takes place in the retina is intended to compress the relevant visual information to a manageable size. The behavior of the external layers of the biological retina has been successfully modelled by a Cellular Neural Network, whose evolution can be described by a set of coupled nonlinear differential equations. A mixed-signal VLSI implementation of the focal-plane low-level image processing based upon this biological model constitutes a feasible and cost effective alternative to conventional digital processing in real-time applications. For these reasons, a programmable array processor prototype chip has been designed and fabricated in a standard 0.5μm CMOS technology. The integrated system consists of a network of two coupled layers, containing 32 × 32 elementary processors, running at different time constants. Involved image processing algorithms can be programmed on this chip by tuning the appropriate interconnections weights. Propagative, active wave phenomena and retina-like effects can be observed in this chip. Design challenges, trade-offs, the buildings blocks and some test results are presented in this paper. |
Identificador del proyecto | N00014-00-10429
IST-1999-19007 TIC1999-0826 |
Cita | Carmona Galán, R., Jiménez Garrido, F.J., Domínguez Castro, R., Espejo Meana, S.C. y Rodríguez Vázquez, Á.B. (2003). Programmable retinal dynamics in a CMOS mixed-signal array processor chip. En Bioengineered and Bioinspired Systems (13-23), Maspalomas, España: The International Society for Optical Engineering - SPIE. |
Ficheros | Tamaño | Formato | Ver | Descripción |
---|---|---|---|---|
Programmable retinal dynamics.pdf | 1.046Mb | [PDF] | Ver/ | |