산업기술연구 (Journal of Industrial Technology)
- 제14권
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- Pages.3-17
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- 1994
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- 1229-9588(pISSN)
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- 1598-1371(eISSN)
2-차원 IIR 디지탈 필터의 설계
Design of Two - Dimensional IIR Digital Filters
초록
This paper develops a design technique for approximating nonseparable frequency characteristics by sums and products of separable transfer functions. Therefore nonseparable frequency characteristics includes the four-quadrant symmetry filters. The desired filter with half plan symmetry is obtained by shifting a low pass characteristic in the frequency domain, and by combining these shifted characteristics. Also the paper develops the technique for designing recursive and nonrecursive two dimensional digital filters by the application of a complex transformation to one dimensional low pass filter.
키워드