Median Filter
The Median filter is used to remove noise from an image by replacing
pixels with the middle pixel value selected from a certain window size.
For example, given the grayscale 3x3 pixel window;
|
22
|
77
|
48
|
|
150
|
77
|
158
|
|
0
|
77
|
219
|
Pixels sorted based on intensity: 0, 22, 48, 77, [77], 77, 150,
158, 219
The center pixel would be left at 77 since 77 is the middle
value of the sorted list of pixels.
The median filter is very effective at removing noise while
not destroying sharp edges in an image.
Interface
Instructions
1. Select the window size of the median filter
Example
| Source | Median |
 |  |
See Also
Mean Filter
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