Which of the following is/are used as basic function in nonlinear filter for noise reduction?(a) Computation of variance(b) Computation of median(c) All of the mentioned(d) None of the mentionedThe question was asked in my homework.This is a very interesting question from Spatial Filtering topic in chapter Intensity Transformations and Spatial Filtering of Digital Image Processing

Which of the following is/are used as basic function in nonlinear filt

1.	Which of the following is/are used as basic function in nonlinear filter for noise reduction?(a) Computation of variance(b) Computation of median(c) All of the mentioned(d) None of the mentionedThe question was asked in my homework.This is a very interesting question from Spatial Filtering topic in chapter Intensity Transformations and Spatial Filtering of Digital Image Processing
Answer» The correct CHOICE is (B) Computation of median To explain I would say: Computation of median gray-level value in the neighborhood is the basic function of NONLINEAR FILTER for noise REDUCTION.

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