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A new impulse detector for switching median filters

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2 Author(s)
Shuqun Zhang ; Dept. of Electr. & Comput. Eng., State Univ. of New York, Binghamton, NY, USA ; Karim, M.A.

A new impulse noise detection technique for switching median filters is presented, which is based on the minimum absolute value of four convolutions obtained using one-dimensional Laplacian operators. Extensive simulations show that the proposed filter provides better performance than many of the existing switching median filters with comparable computational complexity. In particular, the proposed filter is directed toward improved line preservation.

Published in:

Signal Processing Letters, IEEE  (Volume:9 ,  Issue: 11 )