8.7. Image Gradient
Edellinen 8. Reunantunnistus-suotimet  Seuraava

8.7. Image Gradient

8.7.1. Yleiskatsaus

Kuva 17.169. Applying example for the Image Gradient filter

Applying example for the Image Gradient filter

Alkuperäinen kuva

Applying example for the Image Gradient filter

Filter ”Image Gradient” applied with default options.


Filter ”Image Gradient” applied with Direction option.

This filter detects edges in one or two gradient directions.

8.7.2. Activating the Filter

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

8.7.3. Asetukset

Kuva 17.170. Image Gradient filter options

Image Gradient filter options

Presets, ”Input Type”, Clipping, Blending Options, Esikatselu, Merge filter, Split view
[Huomaa] Huomaa

These options are described in Kohta 2, ”Common Features”.

Output mode

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

Kuva 17.171. Output mode examples

Output mode examples

Original image, with abrupt luminosity change

Output mode examples

Option Magnitude is selected

Output mode examples

Option Direction is selected. In result, black is no edge detected, white is edge detected.


Edellinen  Ylös  Seuraava
8.6. Sobel  Alkuun  9. Yleiset suotimet
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