8.7. Image Gradient

8.7. Image Gradient
	8. Фильтры выделения края

Рисунок 17.169. Applying example for the Image Gradient filter

Исходное изображение

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….

Рисунок 17.170. Image Gradient filter options

Presets, «Input Type», Clipping, Blending Options, Предварительный просмотр, Merge filter, Split view

	Примечание
	Эти параметры описываются в Раздел 2, «Общие свойства».

Output mode

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

Рисунок 17.171. 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.