A Weighted Lattice Structure for 2-D Denominator-Separable Digital Filters
نویسندگان
چکیده
2-D denominator-separable digital filters represent an important subclass of 2-D recursive W t a l 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. The new realization inherits all properties of the normalized lattice structure: low roundoff noise, freedom from overflow limit cycles.
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تاریخ انتشار 1994