Recursive implementation of gaussian filters with switching and reset hardware
1
Dept. of Electr. & Comput. Eng., Valparaiso Univ., Valparaiso, IN, USA
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2
Dept. of Elec. & Comp. Eng. & Comp. Sc., Ohio Northern Univ., Ada, OK, USA
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Publication type: Proceedings Article
Publication date: 2013-08-01
Abstract
This paper suggests the use of linear programming and curve fitting to approximate Gaussian filters with a combination of recursive linear-phase exponential filters. The switching and reset method is used to create a stable implementation of an otherwise unstable pole-zero cancelation in the exponential filters. The results show that an accurate approximation of a Gaussian filter, of any order, can be recursively implemented using only 18 constant coefficient multipliers and 26 adders.
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