Original image

Filter Image Gradient applied with default options.

Filter Image Gradient applied with Direction option.

This filter detects edges in one or two gradient directions.

This filter is found in the main menu under Filters → Edge-Detect → Image Gradient….

Presets, Input Type, Clipping, Blending Options, Preview, Merge filter, Split view


	These options are described in .

Output mode

Magnitude is default: it combines both directions. Direction: only one direction is used. Both is like Magnitude.

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.