| ZeroCross | Returns an image of the pixels where the input image changes above or below the midgrey level |
| Canny | Returns an image of the magnitude of the Canny edges and an image of the directions of the detected edges |
| FreiChen | Returns an image of edges of the input image, detected with the FreiChen kernel |
| IntensityGradDirection | Returns an image of the gradient directions of the input image |
| Laplacian | Returns an image of edges of the input image, detected with the Laplacian kernel |
| NonMaxima | Returns an image of the pixels that are locally maximal in the input image |
| Prewitt | Returns an image of edges of the input image, detected with the Prewitt kernel |
| Roberts | Returns an image of edges of the input image, detected with the Roberts kernel |
| Sobel | Returns an image of edges of the input image, detected with the Sobel kernel |