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Low complexity two-dimensional digital filters using unconstrained SPT term allocation

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Original languageEnglish
Title of host publicationIEEE International symposium on circuits and systems
Publisher or commissioning bodyInstitute of Electrical and Electronics Engineers (IEEE)
Pages762 - 765
ISBN (Print)0780330730
StatePublished - May 1996
EventInternational Symposium on Circuits and Systems - Atlanta, United States


ConferenceInternational Symposium on Circuits and Systems
CountryUnited States
Period1/05/96 → …


Previous work by the authors has demonstrated how circularly symmetric and diamond-shaped low-pass linear phase 2-D FIR filters can be designed using coefficients comprising the sum or difference of two signed power-of-two (SPT) terms. This has employed a minimax error criterion in conjunction with an optimisation process based on the use of genetic algorithms. The resulting filters exhibit superior performance to those designed using other methods reported such as simulated annealing and linear programming. This paper extends this work by demonstrating the further improvements possible if the constraints are relaxed, such that only the overall number of SPT terms is constrained, while the distribution between filter coefficients is unconstrained.

Additional information

Other: Ch.201 Rose publication type: Conference contribution Sponsorship: S.Sriranganathan acknowledges the support of the committee of vice chancellors and principals and the University of Bristol for scholarship awards. All authors acknowledge the support of the Centre for Communications Research at the University of Bristol. Terms of use: Copyright © 1996 IEEE. Reprinted from IEEE International Symposium on Circuits and Systems, 1996 (ISCAS '96). This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Bristol's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to By choosing to view this document, you agree to all provisions of the copyright laws protecting it.


International Symposium on Circuits and Systems

Duration1 May 1996 → …
CountryUnited States

Event: Conference

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