Two-Dimensional Quadrilateral Recursive Digital Filters with Parallel Structure--Synthesis and Parallel Processing--

Tsuyoshi ISSHIKI  Hiroaki KUNIEDA  Mineo KANEKO  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E75-A   No.3   pp.352-361
Publication Date: 1992/03/25
Online ISSN: 
Print ISSN: 0916-8508
Type of Manuscript: Special Section PAPER (Special Section on the 4th Karuizawa Workshop on Circuits and Systems)
quadrilateral recursive filters,  parallel processing,  

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This paper proposes a designing algorithm for quadrilateral recursive filters which consist of four quarter-plane filters in the four quadrants. This can realize a perfect zero-phase filtering which is essential for image processing. Furthermore, several parallel processing algorithms capable of performing under very high parallel efficiency are developed on line-connected and mesh-connected processor arrays. By these proposals, the advantage of two-dimensional non-causal zero-phase recursive digital filters is made clear.