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A fast median filter using AltiVec

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3 Author(s)
P. Kolte ; Motorola Inc., Austin, TX, USA ; R. Smith ; W. Su

The paper describes the design and implementation of a median filter for graphics images on the Motorola AltiVec architecture. The filter utilizes 16-way SIMD parallelism to filter images at rates of 1.15 cycles/pixel for 3×3 squares and 6.6 cycles/pixel for 5×5 squares. The median filter is based on a new sorting network which sorts N2 numbers (arranged in an N×N square) by sorting all columns, rows, and diagonal lines in the square. The paper also describes a scheme for efficient testing of the sorting network

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Computer Design, 1999. (ICCD '99) International Conference on

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