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AForge.NET Framework
2.2.5 version is available!

Edge detectors

AForge.NET framework provides number of edge detection filters, which may suite different tasks providing different performance.

Below is the list of implemented edge detection filters and the result of their application to the below source image.

Source image
Source image

Homogenity Edge Detector
The filter finds objects' edges by calculating maximum difference of processing pixel with neighboring pixels in 8 direction.
Homogenity Edge Detector

Difference Edge Detector
The filter finds objects' edges by calculating maximum difference between pixels in 4 directions around the processing pixel.
Difference Edge Detector

Sobel Edge Detector
The filter searches for objects' edges by applying Sobel operator.
Sobel Edge Detector

Canny Edge Detector
The filter searches for objects' edges by applying Canny edge detector.
Canny Edge Detector