Kapittel 16. Filter
| Del III. Funksjonar i GIMP |

## Kapittel 16. Filter

## 1. Innleiing til filtra “Alfa til logo”

A filter is a special kind of tool designed to take an input layer or image, apply a mathematical algorithm to it, and return the input layer or image in a modified format. GIMP uses filters to achieve a variety of effects and those effects are discussed here.

The filters are divided into several categories:

- Del 2, “Blur Filters”

- Del 3, “Forbetringar”

- Del 4, “Forvrengningsfilter”

- Del 5, “Lys- og skyggefilter”

- Del 6, “ Støyfilter ”

- Del 7, “Konturfilter”

- Del 8, “Uspesifiserte filter”

- Del 9, “ Kombineringsfiltra ”

- Del 10, “ Artistic Filters ”

- Del 11, “ Dekor ”

- Del 12, “ Biletkartfilter ”

- Del 13, “ Teiknefiltra ”

- Del 14, “Filter for nettsider”

- Del 15, “Animasjonsfiltra”

### 1.1. Preview

Most filters have a Preview where changes in the image are displayed, in real time (if the “Preview” option is checked), before being applied to the image.

Figur 16.1. Preview submenu

Right clicking on the Preview window opens a submenu which lets you set the Style and the Size of checks representing transparency.

12.8. GIMP på Internett |  | 2. Blur Filters