Hoofdstuk 17. Filters

Inhoudsopgave

1. Introduction
1.1. Preview
2. Common Features
3. Blur Filters
3.1. Introduction
3.2. Gaussian Blur
3.3. Pixelize
3.4. Selective Gaussian Blur
3.5. Circular Motion Blur
3.6. Linear Motion Blur
3.7. Zoom Motion Blur
3.8. Tileable Blur
4. Enhance Filters
4.1. Introduction
4.2. Antialias
4.3. Deinterlace
4.4. Despeckle
4.5. Destripe
4.6. NL Filter
4.7. Red Eye Removal
4.8. Sharpen
4.9. Unsharp Mask
5. Distort Filters
5.1. Introduction
5.2. Blinds
5.3. Curve Bend
5.4. Emboss
5.5. Engrave
5.6. Erase Every Other Row
5.7. Lens Distortion
5.8. Mosaic
5.9. Newsprint
5.10. Page Curl
5.11. Polar Coords
5.12. Ripple
5.13. Shift
5.14. Value Propagate
5.15. Video
5.16. Waves
5.17. Whirl and Pinch
5.18. Wind
5.19. Apply Lens
6. Light and Shadow Filters
6.1. Introduction
6.2. Gradient Flare
6.3. Lens Flare
6.4. Lighting Effects
6.5. Sparkle
6.6. Supernova
6.7. Drop Shadow
6.8. Perspective
6.9. Xach-Effect
6.10. Glass Tile
7. Noise Filters
7.1. Introduction
7.2. HSV Noise
7.3. Hurl
7.4. Pick
7.5. RGB Noise
7.6. Slur
7.7. Spread
8. Edge-Detect Filters
8.1. Introduction
8.2. Difference of Gaussians
8.3. Edge
8.4. Laplace
8.5. Neon
8.6. Sobel
9. Generic Filters
9.1. Introduction
9.2. Convolution Matrix
9.3. Dilate
9.4. Erode
10. Combine Filters
10.1. Introduction
10.2. Depth Merge
10.3. Filmstrip
11. Artistic Filters
11.1. Introduction
11.2. Apply Canvas
11.3. Cartoon
11.4. Clothify
11.5. Cubism
11.6. GIMPressionist
11.7. Oilify
11.8. Photocopy
11.9. Predator
11.10. Softglow
11.11. Van Gogh (LIC)
11.12. Weave
12. Decor Filters
12.1. Introduction
12.2. Add Bevel
12.3. Add Border
12.4. Coffee Stain
12.5. Fuzzy Border
12.6. Old Photo
12.7. Round Corners
12.8. Slide
12.9. Stencil Carve
12.10. Stencil Chrome
13. Map Filters
13.1. Introduction
13.2. Bump Map
13.3. Displace
13.4. Fractal Trace
13.5. Illusion
13.6. Tile Seamless
13.7. Map Object
13.8. Paper Tile
13.9. Small Tiles
13.10. Tile
13.11. Warp
14. Rendering Filters
14.1. Introduction
14.2. Difference Clouds
14.3. Fog
14.4. Plasma
14.5. Solid Noise
14.6. Flame
14.7. IFS Fractal
14.8. Checkerboard
14.9. CML Explorer
14.10. Diffraction Patterns
14.11. Grid
14.12. Jigsaw
14.13. Maze
14.14. Qbist
14.15. Sinus
14.16. Circuit
14.17. Fractal Explorer
14.18. Gfig
14.19. Lava
14.20. Line Nova
14.21. Sphere Designer
14.22. Spyrogimp
15. Web Filters
15.1. Introduction
15.2. ImageMap
15.3. Semi-Flatten
15.4. Slice
16. Animation Filters
16.1. Introduction
16.2. Blend
16.3. Burn-In
16.4. Rippling
16.5. Spinning Globe
16.6. Waves
16.7. Optimize
16.8. Playback

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

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.

Figuur 17.1. Preview submenu

Preview submenu

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