论文信息 - A weighted lattice structure for 2-D denominator-separable digital filters

A weighted lattice structure for 2-D denominator-separable digital filters

2-D denominator-separable digital filters represent an important subclass of 2-D recursive digital filters. Various implementations have been suggested. In this paper, to derive new realizations the fact is used that, different from the case of a general 2-D digital filter, a denominator-separable filter can be developed as an orthonormal expansion. The orthonormal basis has been chosen such that the components can be realized by a normalized lattice structure, proposed in the 1-D case by Gray and Markel (1975). The new realization inherits all properties of the normalized lattice structure: low roundoff noise, freedom from overflow limit cycles.<<ETX>>

Rolf Unbehauen | Xiaoning Nie

[1] T. Hinamoto,et al. Design of 2-D separable-denominator recursive digital filters , 1984 .

[2] Hon Keung Kwan,et al. Lattice implementation of two-dimensional recursive digital filters , 1989 .

[3] A. Gray,et al. A normalized digital filter structure , 1975 .

[4] Rolf Unbehauen,et al. A new structure for multiprocessor implementation of 2-D denominator-separable filters , 1991, 1991., IEEE International Sympoisum on Circuits and Systems.

[5] M. Swamy,et al. Quadrantal symmetry associated with two-dimensional digital transfer functions , 1978 .

[6] Masayuki Kawamata,et al. Synthesis of 2-D separable denominator digital filters with minimum roundoff noise and no overflow oscillations , 1986 .

[7] Winser E. Alexander,et al. Multiprocessor implementation of 2-D denominator-separable digital filters for real-time processing , 1989, IEEE Trans. Acoust. Speech Signal Process..