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Robinson

The Robinson Edge filter is use to detect edges using a horizontal and verticle kernal filter. Both filters are applied to the image and summed to form the final result. The two filters are basic convolution filters of the form:

+2 +3 +2   +2 0 -2   0 -2 +3   +3 -2 0
0 0 0   +3 0 -3   +2 0 -2   -2 0 +2
-2 -3 -2   +2 0 -2   -3 +2 0   0 +2 -3

Example

Source ImageRobinson

See Also

Frei & Chen
Prewitt Filter
Convolution Filter


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