Title :
FPGA implementation of a nonlinear two dimensional fuzzy filter
Author :
Delva, Justin G R ; Reza, Ali M. ; Turney, Robert D.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Wisconsin Univ., Milwaukee, WI, USA
Abstract :
Nonlinear filtering has found many practical applications in digital signal and image processing. The computation complexity of these filtering algorithms make them difficult for real-time hardware implementation. One of these nonlinear filters, which is based on fuzzy classification of each pixel to subgroups of its neighboring pixels, is considered hen for hardware implementation. The criteria of this filter are based on the local context which form the basis of the fuzzy rule. The filtering algorithm is slightly modified for implementation into a Xilinx Virtex series of FPGA for real-time processing of image sequences. Implementation details and recommendations for further improvement are discussed. Result of a simulation example from the proposed hardware implementation is also presented
Keywords :
field programmable gate arrays; fuzzy set theory; image classification; image sequences; mathematical morphology; nonlinear filters; real-time systems; two-dimensional digital filters; FPGA implementation; Xilinx Virtex series; computation complexity; digital signal processing; filtering algorithms; fuzzy classification; fuzzy rule; hardware implementation; image processing; image sequences; local context; nonlinear 2D fuzzy filter; nonlinear filtering; pixel; real-time hardware implementation; real-time processing; simulation results; Additive noise; Digital filters; Field programmable gate arrays; Filtering algorithms; Gaussian noise; Hardware; Image restoration; Image sequences; Morphology; Noise reduction;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1999. Proceedings., 1999 IEEE International Conference on
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-5041-3
DOI :
10.1109/ICASSP.1999.758358