Implementation of 2-D denominator-separable digital filters using first-order all-pass sections |
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Authors: | D. Raghuramireddy X. Nie R. Unbehauen |
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Affiliation: | (1) Lehrstuhl für Allgemeine und Theoretische Elektrotechnik, D-8520 Erlangen, Germany |
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Abstract: | It is established that denominator-separable transfer functions which characterize an important subclass of 2-D filters can be expressed as a linear combination of first-order (1-D or 2-D separable) all-pass transfer functions with real or complex coefficients. This type of expansion is referred to as all-pass expansion of the corresponding transfer function. Based on this all-pass expansion, we derive some efficient structures for the realization of 2-D denominator-separable filters using all-pass sections.On leave from S.V. University College of Engineering. Tirupati-517502, India. |
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Keywords: | 2-D digital filters implementation all-pass expansion |
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