This lesson is still being designed and assembled (Pre-Alpha version)

Image Analysis Training: Rank filters

Rank filters

Basic rank filters


To understand this episode you need to know:


In this module one would learn basic principles of rank image filters and understand when using this type filters might be beneficial.

Learning objectives

Concept map

graph TB
	pixel --> values[neighbourhood pixel values] 
	values --> sorted[sorted pixel values]
	sorted --> min
	sorted --> max
	sorted --> median
	sorted --> ...
	subgraph rank value
	min --> fpixel[filtered image pixel]
	max --> fpixel
	median --> fpixel
	... --> fpixel

Activity: Explore rank filters on grayscale images

Formative assessment

True or false? Discuss with your neighbour!

  1. Median filter is just another name for mean filter.
  2. Small structures can completely disappear from an image when applying a median filter.

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