Implementation of 2-D denominator-separable digital filters using first-order all-pass sections

1573-0824

2-D digital filters ; implementation ; all-pass expansion

Springer Online Journal Archives 1860-2000

Electrical Engineering, Measurement and Control Technology

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.

Electronic Resource