Figur 17.172. Applying example for the Image Gradient filter
Ursprunglig bild
Filter ”Image Gradient” applied with default options.
Filter ”Image Gradient” applied with Direction option.
This filter detects edges in one or two gradient directions.
![]() |
Notera |
---|---|
Dessa alternativ beskrivs i Avsnitt 2, ”Gemensamma funktioner”. |
Magnitude is default: it combines both directions. Direction: only one direction is used. Both is like Magnitude.
Figur 17.174. Output mode examples
Original image, with abrupt luminosity change
Option Magnitude is selected
Option Direction is selected. In result, black is no edge detected, white is edge detected.