Chapter 6. Filters

Table of Contents

1. Filter introduction
2. Blur filters
2.1. Blur filters introduction
2.2. Blur
2.3. Gaussian Blur
2.4. Selective Gaussian Blur
2.5. Motion Blur
2.6. Pixelise
2.7. Tileable Blur
3. Color filters
3.1. Color filters introduction
3.2. Adjust FG-BG
3.3. Alien Map
3.4. Alien Map 2
3.5. Two Colors Exchange
3.6. Colormap Rotation
3.7. Map Color Range
3.8. Sample Colorize
3.9. Gradient Map
3.10. Border Average
3.11. Channel Mixer
3.12. Color Cube Analysis
3.13. Colorify
3.14. Color to Alpha
3.15. Compose
3.16. Decompose
3.17. Filter Pack
3.18. Hot
3.19. Max RGB
3.20. Semi-Flatten
3.21. Smooth Palette
3.22. Value invert
4. Noise filters
4.1. Noise filters introduction
4.2. Hurl
4.3. Noisify
4.4. Pick
4.5. Scatter HSV
4.6. Slur
4.7. Spread
5. Edge-detect filters
5.1. Edge-detect introduction
5.2. Edge
5.3. Difference of Gaussians
5.4. Laplace
5.5. Sobel
6. Enhance filters
6.1. Enhance filters introduction
6.2. Deinterlace
6.3. Despeckle
6.4. Destripe
6.5. NL Filter
6.6. Sharpen
6.7. Unsharp Mask
7. Generic filters
7.1. Generic filters introduction
7.2. Convolution matrix
7.3. Dilate
7.4. Erode
8. Glass Effects filters
8.1. Glass Effects filters introduction
8.2. Apply Lens
8.3. Glass Tile
9. Light Effects filters
9.1. Light Effects filters introduction
9.2. FlareFX
9.3. Gflare
9.4. Lighting Effects
9.5. Sparkle
9.6. SuperNova
10. Distort filters
10.1. Distort filters introduction
10.2. Blinds
10.3. Curve Bend
10.4. Emboss
10.5. IWarp
10.6. Mosaic
10.7. Page Curl
10.8. Polar Coords
10.9. Ripple
10.10. Shift
10.11. Newsprint
10.12. Video
10.13. Value Propagate
10.14. Waves
10.15. Whirl and Pinch
10.16. Wind
11. Artistic filters
11.1. Artistic filters introduction
11.2. Apply Canvas
11.3. Cubism
11.4. GIMPressionist
11.5. GIMPressionist- Orientation Map Editor
11.6. GIMPressionist- Size Map Editor
11.7. Oilify
12. Rendering filters
12.1. Render filters introduction
12.2. Plasma
12.3. Solid Noise
12.4. Flame
12.5. IFS Compose
12.6. Diffraction Patterns
12.7. Grid
12.8. Jigsaw
12.9. Maze
12.10. QBist
12.11. Sinus
13. Combine filters
13.1. Combine filters introduction
13.2. Depth Merge
13.3. Film

1. Filter introduction

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. The GIMP uses filters to achieve a variety of effects and those effects are discussed here.

The filters are divided into several categories:

  • Blur

  • Colors

  • Noise

  • Edge-Detect

  • Enhance

  • Generic

  • Glass Effects

  • Light Effects

  • Distorts

  • Artistic

  • Map

  • Render

  • Web

  • Animation

  • Combine