Mathematica > Data Manipulation > Image Processing & Analysis > Image Filtering & Neighborhood Processing > CommonestFilter
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CommonestFilter

CommonestFilter[image, r]
transforms image by replacing each pixel with the most common pixel value in its range-r neighborhood.

CommonestFilter[data, r]
applies commonest filtering to an array of data.

DetailsDetails

  • CommonestFilter[image, r] computes the commonest value in × blocks centered on each pixel.
  • For multichannel images, CommonestFilter computes the commonest of the set of pixel vectors.
  • At the edges of an image, CommonestFilter uses smaller neighborhoods.
  • CommonestFilter works with 3D as well as 2D images, and also with data arrays of any rank.
  • CommonestFilter[image, {rrow, rcol}] uses range in height, and in width.
  • CommonestFilter[image, {rslice, rrow, rcol}] uses range in height, in depth, and in width.

ExamplesExamplesopen allclose all

Basic Examples (2)Basic Examples (2)

Replacing each pixel with the most common color in its neighborhood creates a posterization effect:

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Apply commonest filtering to a vector of numbers:

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Scope (1)Scope (1)

Applications (1)Applications (1)

Neat Examples (1)Neat Examples (1)

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