Commit 74896c9c authored by Aliaksandr Halavatyi's avatar Aliaksandr Halavatyi

Update filter_neighbourhood.md

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# Neighborhood filters
<img src='https://g.gravizo.com/svg?
digraph G {
shift [fontcolor=white,color=white];
"neighbourhood filter" -> "central neighbourhood pixel" [label=" replaces"];
"neighbourhood filter" -> "size" [label=" has"];
"neighbourhood filter" -> "shape" [label=" has"];
"neighbourhood filter" -> "convolution filters";
"neighbourhood filter" -> "rank filters";
}
'/>
## Requirements
To understand this episode you need to know:
- Pixel properties
## Motivation
This module explains how image features (objects) can be enhanced using filters
## Learning objectives
- Understand common filter principles.
- test mean filter on noisy image data
## Concept map
```mermaid
graph TB
pixel --> neighbours[neighbourhood pixels]
neighbours --> better["`better` value for central pixel"]
better --> update[updated pixel]
```
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## Activity
TODO: construct example with mean filter on noisy data.
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