Processors for generalized stack filters

New processor structures for generalized stack filters are proposed. They can be implemented using different numbers of Boolean function units. The class of pipeline-parallel structures for generalized stack filters is simple and modular in structure, and suitable for VLSI implementation. Coder and...

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Bibliographic Details
Published inIEEE transactions on signal processing Vol. 43; no. 6; pp. 1541 - 1546
Main Authors Akopian, D., Vainio, O., Agaian, S., Astola, J.
Format Journal Article
LanguageEnglish
Published New York, NY IEEE 01.06.1995
Institute of Electrical and Electronics Engineers
Subjects
Applied sciences
Bismuth
Boolean functions
Decoding
Detection, estimation, filtering, equalization, prediction
Digital filters
Exact sciences and technology
Feedback
Image processing
Information, signal and communications theory
Nonlinear filters
Signal and communications theory
Signal processing
Signal, noise
Statistics
Telecommunications and information theory
Very large scale integration
Boolean function
Stack filter
Processor
Pipeline processor
Non linear filtering
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Summary:New processor structures for generalized stack filters are proposed. They can be implemented using different numbers of Boolean function units. The class of pipeline-parallel structures for generalized stack filters is simple and modular in structure, and suitable for VLSI implementation. Coder and decoder networks are developed for the mutual transform of binary-weighted and unary-weighted codes as the thresholding and addition units of the processors. The area time complexity A/spl middot/T of the proposed filters is O(k/sup 3/) due to the feedback, instead of O(2/sup k/) for the threshold decomposition structure, where k is the number of bits for sample representation.< >
ISSN:1053-587X
1941-0476
DOI:10.1109/78.388874