HARFA: SCREENSHOTS AND TUTORIALS: SOBEL'S FILTERS   Filtration Sobel's Filters As mentioned earlier, before deriving image, some smoothing is needed. This can be provided by some of Sobel's filters. Filtration matrices of SobelX (row) and SobelY(column) filter are: Is evident, these filters are formed by combination of derivative and smoothing filter, smoothing is done plumb on the derivation direction. In HarFA there is SobelFindEdges filter too. This filter is combination of SobelX and SobelY filter: Original image, SobelX, SobelY, SobeFindEdges, (place mouse over labels) Previous Next