8.7. Image Gradient
| 8. Kantenerkennungsfilter |

### 8.7. Image Gradient

#### 8.7.1. Wirkungsweise

Abbildung 17.172. Applying example for the Image Gradient filter

Originalbild

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. Filteraufruf

You can find this filter through Filters → Edge-Detect → Image Gradient….

#### 8.7.3. Eigenschaften

Abbildung 17.173. Image Gradient filter options

Presets, „Input Type“, Clipping, Blending Options, Preview, Split view

  | Anmerkung
  These options are described in Abschnitt 2, „Gemeinsame Funktionsmerkmale“.

Output mode

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

  Abbildung 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.

8.6. Sobel |  | 9. Allgemein

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