Diseño hardware de la transformada wavelet discreta: un análisis de complejidad, precisión y frecuencia de operación

Dora María Ballesteros, Diego Renza, Luis Fernando Pedraza


El propósito de este documento es presentar un análisis comparativo de esquemas hardware de la Transformada Wavelet Discreta, DWT, en términos de tres objetivos de diseño: precisión, complejidad y frecuencia de operación. Cada diseño debe considerar los siguientes aspectos: método (no polifásico, polifásico y lifting), topología (basados en multiplicadores y sin multiplicadores), estructura (convencional o pipeline) y formato de cuantización (punto flotante, punto fijo, CSD o entero). Dado que la DWT es ampliamente utilizada en diversas aplicaciones (por ejemplo en compresión, filtrado, codificación, reconocimiento de patrones, entre otras), la selección adecuada de parámetros de diseño desempeña un papel importante en el diseño de estos sistemas.

Palabras clave

DWT; topología; formato de cuantización; precisión

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DOI: http://dx.doi.org/10.17230/ingciencia.12.24.6

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