GNU Image Manipulation Program

User Manual

Legal Notice

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section enphrased GNU Free Documentation License.

Revision History
Revision $Revision: 1767 $ 2007-02-06 romanofski

Table of Contents

Preface
1. GIMP User Manual Authors and Contributors
I. Getting started with the GIMP
1. Introduction
1. Welcome to the GIMP
1.1. Authors
1.2. The GIMP-Help system
1.3. Features and Capabilities
2. What's New in GIMP?
2.1. Interoperability and standards support
2.2. Shortcut editor
2.3. Plug-in previews
2.4. Real-time previews of transform operations
2.5. GNOME Human Interface Guide conformance
2.6. GTK+ 2.4 migration
2.7. Basic vector support
2.8. Also . . .
2. Fire up the GIMP
1. Running GIMP
1.1. Command Line Arguments
1.2. Known platforms
1.3. Language
2. Starting GIMP the first time
3. First steps with Wilber
1. Main Windows in GIMP
1.1. The Main Toolbox
1.2. Image Window
1.3. Dialogs and Docking
4. Getting unstuck
1. Getting Unstuck
1.1. Stuck!
1.2. Common causes of GIMP non-responsiveness
II. How do I become a GIMP wizard?
5. Getting images into GIMP
1. Image types
2. Working with Images
2.1. Creating new Files
2.2. Opening Files
6. Getting images out of GIMP
1. Files
1.1. Saving Images
1.2. Saving Files
2. Preparing your Images for the Web
2.1. Images with an Optimal Size/Quality Ratio
2.2. Reducing the File Size Even More
2.3. Saving Images with Transparency
7. Painting with GIMP
1. The Selection
1.1. Feathering
1.2. Making a selection partially transparent
2. Creating and Using Selections
2.1. Moving a Selection
2.2. Creating a Free Selection
3. QuickMask
3.1. Overview
3.2. Properties
4. Using the Quickmask
5. Paths
5.1. Paths and Selections
5.2. Paths and Text
5.3. Paths and SVG files
6. Paths
6.1. Path creating
6.2. Stroking a Path
6.3. Transforming Paths
7. Brushes
8. Adding New Brushes
9. The GIH dialog box
10. Creating a brush with variable size
11. Gradients
12. Patterns
13. Palettes
13.1. Colormap
14. Drawing Simple Objects
14.1. Drawing a Straight Line
14.2. Creating a Basic Shape
8. Combining images with GIMP
1. Layers
1.1. Layer properties
2. Layer modes
3. Creating New Layers
4. Text and Fonts
5. Text
5.1. Embellishing Text
5.2. Adding Fonts
5.3. Font Problems
9. Enhancing photographs with GIMP
1. Working with Digital Camera Photos
1.1. Introduction
1.2. Improving Composition
1.3. Improving Colors
1.4. Adjusting Sharpness
1.5. Removing Unwanted Objects from an Image
1.6. Saving Your Results
10. Pimp my GIMP
1. Grids and Guides
1.1. The Image Grid
1.2. Guides
2. Rendering a Grid
3. How to Set Your Tile Cache
4. Creating Shortcuts to Menu Functions
5. Dialogs and Docking
5.1. Creating Docking Dialogs
5.2. Removing Tabs
11. Scripting the GIMP
1. Plugins
1.1. Introduction
1.2. Using Plugins
1.3. Installing New Plugins
1.4. Writing Plugins
2. Using Script-Fu Scripts
2.1. Script-Fu?
2.2. Installing Script-Fus
2.3. Do's and Don'ts
2.4. Different Kinds Of Script-Fus
2.5. Standalone Scripts
2.6. Image-Dependent Scripts
3. A Script-Fu Tutorial
3.1. Getting Acquainted With Scheme
3.2. Variables And Functions
3.3. Lists, Lists And More Lists
3.4. Your First Script-Fu Script
3.5. Giving Our Script Some Guts
3.6. Extending The Text Box Script
12. To be cleaned up
1. Undoing
1.1. Things that cannot be Undone
2. Basic GIMP Concepts
III. The GIMP Function Reference
13. Toolbox
1. The Toolbox
1.1. Tool Options
2. Selection Tools
2.1. Common Features
2.2. Rectangle Selection Tool
2.3. Ellipse Selection Tool
2.4. Free Selection Tool (Lasso)
2.5. Fuzzy Selection Tool (Magic Wand)
2.6. Select By Color Tool
2.7. Scissors Tool
3. Brush Tools
3.1. Common Features
3.2. Bucket Fill
3.3. Gradient Tool
3.4. Painting Tools (Pencil, Paintbrush, Airbrush)
3.5. Pencil
3.6. Paintbrush Tool
3.7. Eraser
3.8. Airbrush Tool
3.9. Ink Tool
3.10. Clone Tool
3.11. Convolve (Blur/Sharpen)
3.12. Dodge or Burn
3.13. Smudge Tool
4. Transform Tools
4.1. Common Features
4.2. Move Tool
4.3. Crop and Resize Tool
4.4. Rotate Tool
4.5. Scale Tool
4.6. Shear Tool
4.7. Perspective Tool
4.8. Flip Tool
5. Color Tools
5.1. Color Balance Tool
5.2. Hue-Saturation Tool
5.3. Colorize Tool
5.4. Brightness-Contrast tool
5.5. Threshold Tool
5.6. Levels tool
5.7. Curves Tool
5.8. Posterize Tool
6. Other
6.1. Path Tool
6.2. Color Picker Tool
6.3. Magnify Tool
6.4. Measure Tool
6.5. Texttool
7. Color and Indicator Area
7.1. Color Area
7.2. Indicator Area
7.3. Active image area
14. Dialogs
1. Dialog introduction
2. Image structure related dialogs
2.1. Layers dialog
2.2. Channels dialog
2.3. Path dialog
2.4. Colormap dialog
2.5. Histogram dialog
2.6. Navigation Dialog
2.7. Undo History dialog
3. Image content related dialogs
3.1. Colors dialog
3.2. Brushes dialog
3.3. Patterns dialog
3.4. Gradients dialog
3.5. Palettes dialog
3.6. Fonts dialog
4. Image management related dialogs
4.1. Buffers dialog
4.2. Images dialog
4.3. Document History dialog
4.4. Templates dialog
5. Misc dialogs
5.1. Tools dialog
5.2. Preferences dialog
5.3. Device Status dialog
5.4. Error Console
5.5. Export File
15. Menus
1. Introduction to the GIMP Menus
1.1. Context Menus
1.2. Detachable Submenus
2. Toolbox File Menu
2.1. The “File” Menu of the Toolbox
2.2. Acquire
2.3. The Preferences command
2.4. The Dialogs sub-menu
3. Xtns
3.1. Introduction to the “Xtns” menu
3.2. The Module Manager
3.3. The Unit Editor
3.4. Plug-In Browser
3.5. The Procedure Browser
3.6. The “Script-Fu” submenu
4. The “Help” Menu of the Toolbox Window
4.1. Introduction to the “Help” menu
4.2. Help
4.3. Context Help
4.4. Tip of the Day
4.5. About
4.6. GIMP online
5. The “File” Menu of the Image Window
5.1. File menu
5.2. New
5.3. Open
5.4. Open Location
5.5. Open Recent
5.6. Open as Layer
5.7. Save
5.8. Save as
5.9. Save a Copy
5.10. Save as Template
5.11. Revert
5.12. Print
5.13. Close
5.14. Quit
6. The “Edit” Menu of the Image Window
6.1. Edit” menu entries
6.2. Undo
6.3. Redo
6.4. Undo History
6.5. Cut
6.6. Copy
6.7. Copy Visible
6.8. Paste
6.9. Paste Into
6.10. Paste as New
6.11. Buffers
6.12. Clear
6.13. Fill with FG Color
6.14. Fill with BG Color
6.15. Fill with Pattern
6.16. Stroke Selection
6.17. Stroke Path
7. The “Select” Menu
7.1. Introduction to the “Select” menu
7.2. Select All
7.3. None
7.4. Invert
7.5. Float
7.6. By Color
7.7. From Path
7.8. Selection Editor
7.9. Feather
7.10. Sharpen
7.11. Shrink
7.12. Grow
7.13. Border
7.14. Rounded Rectangle
7.15. Toggle QuickMask
7.16. Save to Channel
7.17. To Path
8. View
8.1. Introduction to the “View” Menu
8.2. New View
8.3. Dot for Dot
8.4. Zoom
8.5. Shrink Wrap
8.6. Full Screen
8.7. Info Window
8.8. Navigation Window
8.9. Display Filters
8.10. Show Selection
8.11. Show Layer Boundary
8.12. Show Guides
8.13. Snap to Guides
8.14. Show Grid
8.15. Snap to Grid
8.16. Padding Color
8.17. Show Menubar
8.18. Show Rulers
8.19. Show Scrollbars
8.20. Show Statusbar
9. The “Image” Menu of the Image Window
9.1. The “Image” Menu of the Image Window
9.2. Duplicate
9.3. Mode
9.4. RGB mode
9.5. Grayscale mode
9.6. Indexed mode
9.7. Decompose
9.8. Compose
9.9. Transform
9.10. Flip Horizontally; Flip Vertically
9.11. Rotation
9.12. Guillotine
9.13. Canvas Size
9.14. Print Size
9.15. Fit Canvas to Layers
9.16. Scale Image
9.17. Crop Image
9.18. Autocrop Image
9.19. Zealous Crop
9.20. Merge Visible Layers
9.21. Flatten Image
9.22. Guides
9.23. Remove all guides
9.24. New Guide (by Percent)
9.25. New Guide
9.26. New Guides from Selection
9.27. Configure Grid
10. Layers
10.1. Introduction to the “Layer” Menu
10.2. New Layer
10.3. Duplicate layer
10.4. Anchor layer
10.5. Merge Down
10.6. Delete Layer
10.7. The “Stack” Submenu
10.8. Select Previous Layer
10.9. Select Next Layer
10.10. Select Top Layer
10.11. Select Bottom Layer
10.12. Raise Layer
10.13. Lower Layer
10.14. Layer to Top
10.15. Layer to Bottom
10.16. The “Colors” Submenu
10.17. Desaturate
10.18. Invert
10.19. Layer Color-Stretching Commands
10.20. The “Auto” Submenu
10.21. Equalize
10.22. White Balance
10.23. Stretch Contrast
10.24. Color Enhance
10.25. Stretch HSV
10.26. Normalize
10.27. Autocrop Layer
10.28. The “Mask” Submenu
10.29. Add Layer Mask
10.30. Apply Layer Mask
10.31. Delete Layer Mask
10.32. Edit Layer Mask
10.33. Disable Layer Mask
10.34. Show Layer Mask
10.35. Mask to Selection
10.36. Add Layer Mask to Selection
10.37. Subtract Layer Mask from Selection
10.38. Intersect Layer Mask with Selection
10.39. The “Transparency” Submenu of the “Layer” menu
10.40. Add Alpha Channel
10.41. Color to Alpha
10.42. Semi-flatten
10.43. Threshold Alpha
10.44. Alpha to Selection
10.45. Add to Selection
10.46. Subtract from Selection
10.47. Intersect with Selection
10.48. The “Transform” Submenu
10.49. Flip Horizontally
10.50. Flip Vertically
10.51. Rotate 90 degrees CW
10.52. Rotate 90 degrees CCW
10.53. Rotate 180 degrees
10.54. Arbitrary Rotation
10.55. Offset
10.56. Layer Boundary Size
10.57. Layer to Image Size
10.58. Scale Layer
10.59. Crop Layer
10.60. Align Visible Layers
11. Tools
11.1. Introduction to the “Tools” Menu
12. The “Filters” Menu of the Image Window
12.1. Introduction to the “Filters” menu
12.2. Repeat Last
12.3. Re-show Last
12.4. Reset All Filters
16. Filters
1. Filter introduction
1.1. Preview
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. Introduction to Color Filters
3.2. Adjust FG-BG
3.3. Alien Map 2
3.4. Two Colors Exchange
3.5. Colormap Rotation
3.6. Map Color Range
3.7. Sample Colorize
3.8. Gradient Map
3.9. Border Average
3.10. Channel Mixer
3.11. Colorcube Analysis
3.12. Colorify
3.13. Color to Alpha
3.14. Compose
3.15. Decompose
3.16. Filter Pack
3.17. Hot
3.18. Max RGB
3.19. Retinex
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. Scatter RGB
4.4. Pick
4.5. Scatter HSV
4.6. Slur
4.7. Spread
5. Edge-detect filters
5.1. Edge-detect introduction
5.2. Difference of Gaussians
5.3. Edge
5.4. Laplace
5.5. Neon
5.6. 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. Cartoon
11.4. Cubism
11.5. GIMPressionist
11.6. GIMPressionist - Orientation Map Editor
11.7. GIMPressionist - Size Map Editor
11.8. Oilify
11.9. Photocopy
11.10. Soft Glow
12. Map filters
12.1. Map filters introduction
12.2. Bump Map
12.3. Displace
12.4. Fractal Trace
12.5. Illusion
12.6. Make Seamless
12.7. Map Object
12.8. Paper Tile
12.9. Small Tiles
12.10. Tile
12.11. Warp
12.12. Van Gogh (LIC)
13. Rendering filters
13.1. Render filters introduction
13.2. Plasma
13.3. Solid Noise
13.4. Flame
13.5. IFS Compose
13.6. Diffraction Patterns
13.7. CML Explorer
13.8. Grid
13.9. Maze
13.10. Jigsaw
13.11. Qbist
13.12. Checkerboard
13.13. Sinus
13.14. Fractal Explorer
13.15. Gfig
13.16. Sphere Designer
14. Combine filters
14.1. Combine filters introduction
14.2. Depth Merge
14.3. Film
15. Animation filters
15.1. Optimize
15.2. Playback
16. Web filters
16.1. ImageMap
I. GIMP keys and mouse reference
Help — Key reference for Help menu
Toolbox — Key reference for Toolbox menu
File — Key reference for File menu
Dialogs — Key reference for Dialogs menu
View — Key reference for View menu
Edit — Key reference for Edit menu
Layers — Key reference for Layers menu
Selections — Key reference for Selections menu
Plug-ins — Key reference for Plug-ins menu
Zoom tool — Key reference for Zoom tool menu
Glossary
Bibliography
A. GIMP History
1. The very beginning
2. The early days of GIMP
3. The One to change the world
4. New in GIMP 2
B. Reporting Bugs and Requesting Enhancements
1. Making sure it's a Bug
2. Reporting the Bug
3. What Happens to a Bug Report after you Submit it
C. GNU Free Documentation License
1. PREAMBLE
2. APPLICABILITY AND DEFINITIONS
3. VERBATIM COPYING
4. COPYING IN QUANTITY
5. MODIFICATIONS
6. COMBINING DOCUMENTS
7. COLLECTIONS OF DOCUMENTS
8. AGGREGATION WITH INDEPENDENT WORKS
9. TRANSLATION
10. TERMINATION
11. FUTURE REVISIONS OF THIS LICENSE
12. ADDENDUM: How to use this License for your documents
D. Eeek! There is missing help
Index

List of Figures

2.1. Welcome
2.2. Personal GIMP Directory
2.3. User Installation Log
2.4. GIMP Performance Tuning
3.1. The screenshot illustrates the standard windows of GIMP
3.2. Screenshot of the Toolbox
3.3. A screenshot of the image window illustrating the important components
3.4. A dock, with docking bars highlighted
3.5. A dialog in a dock, with the drag handle area highlighted.
3.6. A dock with an Image Menu highlighted
3.7. A dialog in a dock, with the Tab menu button highlighted
3.8. Tab menu from the Layers dialog
3.9. Preview Size submenu of a Tab menu El submenú "Tamaño de la vista previa".
3.10. Tab Style submenu of a Tab menu
4.1. Layers dialog showing a floating selection.
4.2. Unstuck show selection menu
4.3. Unstuck select all
4.4. Unstuck layer invisibility
4.5. Unstuck layer transparency
5.1. Components of the RGB and CMY color model
5.2. Example of an image in RGB and Grayscale mode
5.3. Example of an image with alpha channel
5.4. The “File Open” dialog.
5.5. The “Open Location” dialog.
6.1. Example of an Export dialog
6.2. The Wilber image opened in RGBA mode.
6.3. An indexed image can look a bit grainy. The left image is Wilber in its original size, the right one is zoomed in by 300 percent.
6.4. The Wilber image opened in RGBA mode.
6.5. Mid-Tone Checks in the background layer represent the transparent region of the saved image while you are working on it in GIMP.
7.1. How would you isolate the tree?
7.2. Selection shown as usual with dashed line
7.3. Same selection in QuickMask mode
7.4. Same selection in QuickMask mode after feathering
7.5. Moving the selection reveals the background layer
7.6. Using the Free Selection Tool
7.7. Image with QuickMask enabled
7.8. Four examples of GIMP paths
7.9. Appearance of a path while it is being manipulated using the Path tool.
7.10. Text converted to a path
7.11. Illustration of four different path creating.
7.12. The four paths from the top illustration, each stroked in a different way.
7.13. The Stroke Path dialog.
7.14. Brush strokes example
7.15. The dialog to describe the animated brush.
7.16. The dialog to describe the animated brush.
7.17. Here is the result by stroking an elliptical selection with the brush:
7.18. Some examples of GIMP gradients.
7.19. Gradient usage
7.20. Pattern usage
7.21. Pattern script examples
7.22. The Palettes dialog
7.23. The Palette Editor El editor de paletas
7.24. The Colormap dialog
7.25. The dialog shows a new image, filled with a white background.
7.26. The dialog shows a new image, with the first dot which indicates the start of the straight line. The dot has a black foreground color.
7.27. The screenshot shows the helpline, which indicates how the finished line will look.
7.28. The line created appears in the image window after drawing the second point (or end point), while the Shift key is still pressed.
7.29. The screenshot shows how a rectangular selection is created. Press and hold the left mouse button while you move the mouse in the direction of the red arrow.
7.30. The screenshot shows a rectangular selection filled with the foreground color.
8.1. Images (masks) for layer mode examples
8.2. Images (backgrounds) for layer mode examples
8.3. Example for layer mode “normal
8.4. Example for layer mode “Dissolve
8.5. Example for layer mode “Multiply
8.6. Example for layer mode “Divide
8.7. Example for layer mode “Screen
8.8. Example for layer mode “Overlay
8.9. Example for layer mode “Dodge
8.10. Example for layer mode “Burn
8.11. Example for layer mode “Hard Light
8.12. Example for layer mode “Soft Light
8.13. Example for layer mode “Grain Extract
8.14. Example for layer mode “Grain Merge
8.15. Example for layer mode “Difference
8.16. Example for layer mode “Addition
8.17. Example for layer mode “Subtract
8.18. Example for layer mode “Darken Only
8.19. Example for layer mode “Lighten Only
8.20. Example for layer mode “Hue
8.21. Example for layer mode “Saturation
8.22. Example for layer mode “Color
8.23. Example for layer mode “Value
8.24. Multi layer example
8.25. Example of a text item
8.26. GIMP text editor
8.27. Fancy text
10.1. Image used for examples below
10.2. Image with default grid
10.3. A different grid style
10.4. Image with four guides
10.5. Configure Keyboard Shortcuts
10.6. A dialog in a dock, with the “Close Tab” button highlighted
13.1. Tool Options dialog for the Rectangle Select tool.
13.2. Rectangle Select icon in the Toolbox
13.3. Tool Options for the Rectangle Select tool
13.4. Size Constraint Option Menu for the Rectangle Select tool
13.5. Ellipse Select icon in the Toolbox
13.6. Tool Options for the Ellipse Select tool
13.7. Size Constraint Option Menu for the Ellipse Select tool
13.8. Free Selection icon in the Toolbox
13.9. Tool Options for the Lasso tool
13.10. Magic Wand tool icon in the Toolbox
13.11. Tool Options for the Magic Wand tool
13.12. Select by Color tool icon in the Toolbox
13.13. Tool Options for the Select by Color tool
13.14. Intelligent Scissors tool icon in the Toolbox.
13.15. Tool Options for the Intelligent Scissors
13.16. The Brush tools
13.17. Tool Options shared by all brush tools
13.18. Toolbox Fill
13.19. The Blend tool in Toolbox.
13.20. Blend” tool options
13.21. Blend” tool: Offset example
13.22. Painting example
13.23. Dissolve mode example
13.24. Gradient options for painting tools.
13.25. Pencil tool
13.26. Pencil Tool options
13.27. Paintbrush
13.28. Paintbrush tool options
13.29. Eraser tool icon in the Toolbox
13.30. Tool Options for the Eraser tool
13.31. The Airbrush tool in Toolbox
13.32. Airbrush options
13.33. Toolbox Pen
13.34. Ink Tool options
13.35. Clone tool icon in the Toolbox
13.36. Tool Options for the Clone tool
13.37. Convolve tool icon in the Toolbox
13.38. Tool Options for the Convolve tool
13.39. Dodge tool
13.40. Dodge/Burn” tool options
13.41. Smudge tool
13.42. The Smudge tool in Toolbox
13.43. An overview of the transform tools
13.44. Common options of transform tools
13.45. The Move tool in Toolbox
13.46. Move Tool options
13.47. Crop tool
13.48. Crop and Resize” tool options
13.49. The Rotate tool in Toolbox
13.50. Rotation tool options
13.51. The Rotation Information dialog window
13.52. The Scale tool in Toolbox
13.53. Scale tool options
13.54. The Scaling Information dialog window
13.55. The Shear tool in Toolbox
13.56. Shear tool options
13.57. Shearing Information window
13.58. Perspective tool
13.59. Perspective” tool options
13.60. The dialog window of the “Perspective” tool
13.61. Flip tool
13.62. Flip Tool” Options
13.63. Color Balance options
13.64. Hue-Saturation tool options
13.65. Colorize options
13.66. Brightness-Contrast options dialog
13.67. Threshold tool options
13.68. The original image, the decompose image and its Layer Dialog
13.69. The selected layer after threshold fit
13.70. The mask
13.71. The result
13.72. Level tool options
13.73. Curves tool
13.74. Posterize tool options
13.75. Path tool
13.76. Path” tool options
13.77. Eye dropper
13.78. Color Picker Info Window
13.79. Color Picker Options
13.80. Zoom tool
13.81. Zoom tool options
13.82. Measure tool
13.83. Measure tool options
13.84. The Text tool in Toolbox
13.85. Text tool options
13.86. The Text Editor options
13.87. Color area in the Toolbox Palette
13.88. Active tool indicator area
14.1. Layer Dialog
14.2. An image with layers
14.3. Layer modes
14.4. Keep transparency
14.5. Opacity
14.6. Dialog add mask
14.7. The Channel dialog
14.8. Representation of an image with channels
14.9. Channels Menu
14.10. A selection composed out of channels.
14.11. Dialog Quick Mask
14.12. The Paths dialog
14.13. The Paths dialog menu
14.14. The Colormap dialog
14.15. The Histogram dialog
14.16. Channel options for an RGB layer with alpha channel.
14.17. Combined histograms of R, G, and B channels.
14.18. The histogram shown at the top, changed to logarithmic mode.
14.19. Dialog aspect after range fixing.
14.20. Navigation Dialog
14.21. The Undo History dialog
14.22. Colors dialog
14.23. The Brushes dialog
14.24. The Brushes dialog
14.25. The Brushes Editor dialog
14.26. The Patterns dialog
14.27. The Patterns dialog
14.28. The screenshot illustrates the Gradients dialog
14.29. The gradient editor
14.30. The Gradient Editor menu
14.31. The "Load Color From" submenu
14.32. The Blending Function submenu
14.33. The Coloring Type submenu
14.34. The Palettes dialog
14.35. The Palettes dialog
14.36. The Palettes Menu
14.37. The Import Palette dialog
14.38. The Palette Editor
14.39. The Palette Editor Menu
14.40. The Fonts dialog
14.41. The Fonts dialog
14.42. The Buffers dialog
14.43. The Buffers dialog (Grid View)
14.44. The Images dialog
14.45. Document History dialog
14.46. The Templates dialog
14.47. The Edit Template dialog
14.48. The Advanced Options dialog
14.49. The Tools dialog
14.50. List of preference pages
14.51. New Image Preferences
14.52. Default Grid Preferences
14.53. Assorted Interface Preferences
14.54. Theme Preference
14.55. Help System Preferences (Linux Screenshot)
14.56. Tool Options Preferences
14.57. Toolbox Preferences
14.58. Default Toolbox appearance
14.59. General Image Window Preference
14.60. Image Window Appearance Defaults
14.61. Image Window Title and Statusbar formats
14.62. Display Preferences
14.63. The Calibration dialog
14.64. Input devices preferences
14.65. Preferences for a tablet
14.66. Input controllers preferences
14.67. Main Mouse Wheel tab
14.68. Select Controller Event Action
14.69. Main Keyboard
14.70. Window Management Preferences
14.71. Environment Preferences
14.72. Basic Folder Preferences
14.73. Preferences: Brush Folders
14.74. The device Status Dialog
14.75. Error Console” Dialog window
14.76. Save Error Log to file” Dialog window
14.77. Export PNG File Dialog
14.78. Export JPG File Dialog
14.79. Export MNG File Dialog
14.80. Export GIF File Dialog
15.1. The Toolbox Menu
15.2. The “Acquire” submenu and its detached submenu
15.3. Contents of the “File” menu
15.4. The “Acquire” submenu of the Toolbox File menu
15.5. The “Screen Shot” window
15.6. Scanner and Webcam
15.7. The Dialogs submenu of the Toolbox File menu
15.8. Contents of the “Xtns” menu
15.9. The “Module Manager” dialog window
15.10. The “Unit Editor” dialog window
15.11. The “New Unit” dialog
15.12. The list view of the “Plug-In Browser” dialog window
15.13. The tree view of the “Plug-In Browser” dialog window
15.14. The “Procedure Browser” dialog window
15.15. The “Script-Fu” submenu of the Xtns menu
15.16. Contents of the “Help” menu
15.17. Tip of the day”Dialog window
15.18. The “About” dialog window
15.19. The “GIMP online” submenu of the Help menu
15.20. The File menu of the image window
15.21. The File menu of the Toolbox
15.22. The “New Image” dialog
15.23. The “Create a New Image” dialog
15.24. New Image dialog (Advanced Options)
15.25. Colorspace menu
15.26. Fill menu
15.27. Open Dialog
15.28. The “Open Location” dialog window
15.29. The basic “File Save” dialog
15.30. The “Save” Dialog (Browser)
15.31. Contents of the Edit menu
15.32. The “Buffer” submenu of the “Edit” menu
15.33. The “Choose Stroke Style” dialog window
15.34. Example of miter limit
15.35. The Contents of the “Select” menu
15.36. The “Selection Editor” dialog window
15.37. Example of clicking in the “Selection Editor” display window
15.38. The “Advanced Settings” dialog window
15.39. The “Feather Selection” dialog La finestra “Selezione sfumata
15.40. The “Shrink Selection” dialog
15.41. The “Grow Selection” dialog window
15.42. Why growing a rectangular selection results in rounded corners
15.43. Example of creating a border from a selection
15.44. The “Border” dialog window
15.45. The “Rounded Rectangle” dialog
15.46. Contents of the View menu
15.47. The “Zoom” submenu of the “View” menu
15.48. The “General” tab of the “Info Window
15.49. The “Cursor” tab of the “Info Window
15.50. The “Comment” tab of the “Info Window
15.51. The “Configure Color Display Filters” dialog
15.52. Description of the “Color Deficient Vision” dialog
15.53. Example of protanopia with some text
15.54. Examples of the three types of vision deficiencies in one image
15.55. The “Gamma” dialog
15.56. The “Contrast” dialog
15.57. The “Color Proof” options
15.58. Contents of the “Padding Color” submenu
15.59. The Contents of the “Image” Menu
15.60. The “Mode” submenu of the “Image” menu
15.61. The “Convert Image to Indexed Colors” dialog
15.62. Example: full color, with no dithering
15.63. Example: four colors, with no dithering
15.64. Example: Floyd-Steinberg (normal)
15.65. Example: Floyd-Steinberg (reduced color bleeding)
15.66. The “Transform” submenu of the “Image” menu
15.67. The “Canvas size” dialog
15.68. The “Print Size” dialog
15.69. The “Scale Image” dialog
15.70. Zealous Crop” Example
15.71. The “Merge Visible Layers” Dialog Dialogen “Flett saman synlege lag
15.72. Accessing the Flatten Image menu item
15.73. The “Guides” options of the “Image” submenu
15.74. The “New Guide (by Percent)” Dialog
15.75. The “New Guide” Dialog
15.76. The “Configure grid” dialog
15.77. The Contents of the “Layer” Menu
15.78. The “New Layer” dialog
15.79. The “Stack” submenu
15.80. The “Colors” submenu
15.81. Applying “Invert layer colors
15.82. The original layer and its histograms
15.83. The “Equalize” command
15.84. The “White Balance” command
15.85. The “Stretch Contrast” command
15.86. The “Stretch HSV” command
15.87. The “Color Enhance” command
15.88. The “Normalize” command
15.89. The “Colors/Auto” submenu
15.90. Original image
15.91. Image after the command
15.92. Original image
15.93. Image after the command
15.94. Original image
15.95. Image after the command
15.96. Color Enhance” example (Original image)
15.97. Color Enhance” example (Image after the command)
15.98. Original image
15.99. Image after the command
15.100. Normalize”Example (Original image)
15.101. Normalize”Example (Image after the command)
15.102. Example
15.103. The “Mask” submenu of the “Layer” menu
15.104. The “Add Layer Mask” dialog
15.105. Illustration of “Layer Mask to Selection
15.106. Illustration of Add Layer Mask to Selection
15.107. Illustration of Subtract Layer Mask from Selection
15.108. Illustration of Intersecting the Layer Mask with the Selection
15.109. The “Transparency” submenu of the “Layer” menu
15.110. The “Threshold Alpha” dialog
15.111. Applying “Alpha to Selection
15.112. Applying “Add to Selection
15.113. Applying “Subtract from Selection
15.114. Applying “Intersect with Selection
15.115. The “Transform” Submenu of the “Layer” menu
15.116. Applying “Flip Layer Horizontally
15.117. The “Offset” dialog
15.118. The “Layer Boundary Size” Dialog
15.119. The “Scale Layer” dialog
15.120. Applying “Layer Crop
15.121. Example image for layer alignment
15.122. The “Layer Align” dialog
15.123. Horizontal “Collect” alignment (on the edge of the canvas)
15.124. Horizontal “Collect” alignment (on the bottom layer)
15.125. Horizontal “Fill” alignment (canvas)
15.126. Horizontal “Fill” alignment (bottom layer)
15.127. Vertical “Fill” alignment (bottom layer)
15.128. Contents of the “Tools” menu
15.129. The “Filters” menu
16.1. Preview submenu
16.2. Original for demo
16.3. Gaussian blur (radius 10)
16.4. Simple blur
16.5. Selective blur
16.6. Pixelize
16.7. Motion blur
16.8. The Blur filter applied to a photograph
16.9. From left to right: original, filter applied.
16.10. Gaussian” filter parameters settings
16.11. The Selective Gaussian Blur filter
16.12. Selective Gaussian” filter parateters settings
16.13. Starting example for Motion Blur filter
16.14. Using example for Motion Blur filter
16.15. Motion Blur” filter options
16.16. From left to right: Before and after applying Pixelise filter
16.17. Pixelize” filter options
16.18. From left to right: original, tileable blur applied
16.19. Tileable Blur” filter options
16.20. From left to right: original image, after applying Adjust FG BG (FG:blue, BG:red)
16.21. Alien Map 2 filter example
16.22. Options for the “Alien Map 2” filter
16.23. From left to right: Original image, after applying Color Exchange (Blue to black)
16.24. Option of the “Two color exchange” filter
16.25. From left to right: Original image, after applying filter
16.26. Main Options of the “Color Map Rotation” filter
16.27. Base image for Grey Options
16.28. Grey Mode
16.29. Gray Threshold
16.30. From left to right: Original image, after applying filter
16.31. Options of the “Map Color Range” filter
16.32. From left to right: Original image, after applying filter
16.33. Options of the “Sample Colorize” filter
16.34. Example of gradient map
16.35. Options of the “Border Average Filter
16.36. Original image
16.37. Number of Colors” is set to 4:
16.38. Number of Colors” is set to 128:
16.39. From left to right: original image, after applying Channel Mixer filter
16.40. Channel Mixer” filter options
16.41. The original image and its channels
16.42. Output channel is red. Green Channel +50
16.43. Output channel is red. Green Channel +50%. The Preserve Luminosity option is checked.
16.44. Monochrome option checked. Red:100% Green: 50% Blue: 0%. Preserve Luminosity unchecked.
16.45. From left to right: Original image, after Colorcube Analysis of the image
16.46. From left to right: original image, after applying Colorify filter
16.47. Colorify” filter options
16.48. From left to right: original image, after applying Color to Alpha filter (Blue to transparency)
16.49. From left to right: Decomposed image (RGB decomposition), composed image.
16.50. Compose” filter options
16.51. From left to right: Original image, Decomposed image (RGB decomposition).
16.52. Decompose” filter options
16.53. From left to right: Original image, FilterPack (more Blue, more Saturation)
16.54. All the options for filter “Filter Pack
16.55. Hue option of the “Filterpack” filter
16.56. The saturation option of the “Filterpack” filter
16.57. Value option of the “Filterpack” filter
16.58. Advanced options of the “Filterpack” filter
16.59. From left to right: original image, after applying MaxRGB filter
16.60. Retinex” example
16.61. Retinex” filter options
16.62. Toolbox Background color (pink) and an image with feathered edges on a transparent background, at a 800% zoom level.
16.63. Result, in GIF format, after applying Semi-flatten filter.
16.64. From left to right: original image, after applying Smooth Palette filter
16.65. From left to right: original image, after applying Value Invert filter
16.66. Example of using this filter twice
16.67. Hurl” options
16.68. Example of applying the Noisify filter
16.69. Scatter RGB” filter options
16.70. Example of applying the “Pick” filter
16.71. Pick” filter options
16.72. Example of applying the Pick HSV filter
16.73. Scatter HSV” filter options
16.74. Example of applying the Slur filter
16.75. Slur filter options
16.76. Example of applying the Spread filter
16.77. Spread” filter options
16.78. Applying example for the Difference of Gaussians filter
16.79. Gaussian Difference filter options
16.80. Applying example for the Edge filter
16.81. Applying examples for the Edge filter
16.82. Applying example for the Edge filter
16.83. Applying example for the Edge filter
16.84. Edge filter options
16.85. Applying example for the Laplace filter
16.86. Applying example for the Neon filter
16.87. Neon filter options
16.88. Applying example of the Sobel filter
16.89. Sobel filter options
16.90. Deinterlace ofilter options Options du filtre Désentrelacer
16.91. Simple applying example for the Deinterlace filter
16.92. Despeckle” filter options
16.93. Destripe” filter options
16.94. NL Filter” options
16.95. Applying example for the Sharpen filter
16.96. Sharpen” filter options
16.97. Applying example for the Unsharp Mask filter
16.98. Unsharp Mask” filter options
16.99. Black eye effect
16.100. Sharpen
16.101. Blur
16.102. Edge enhance
16.103. Edge detect
16.104. Emboss
16.105. Applying example for the Dilate filter
16.106. Dilate text
16.107. Dilate neon effect
16.108. Erode noise
16.109. The same image, before and after applying lens effect.
16.110. Apply Lens” filter options
16.111. The same image, before and after applying glass tile effect.
16.112. Glass Tile” filter options
16.113. Example for the FlareFX filter
16.114. FlareFX” filter options
16.115. Example for the GFlare filter
16.116. GFlare” filter options (Settings)
16.117. Gflare” filter options (Selector)
16.118. Gflare Editor” options (General)
16.119. Gflare Editor” options (Glow)
16.120. Gflare Editor” options (Rays)
16.121. Gflare Editor” options (Second Flares)
16.122. The same image, before and after applying Lighting filter
16.123. Lighting” filter general options
16.124. Light” Options of the Lighting filter
16.125. Material” tab of the Lighting filter
16.126. Bumpmap” options of the Lighting filter
16.127. Environment map” options
16.128. Applying example for the Sparkle filter
16.129. Sparkle” filter options
16.130. Applying example for the Supernova filter
16.131. Supernova” filter options
16.132. Applying example for the Blinds filter
16.133. Blinds” filter options
16.134. Applying example for the Curve Bend filter
16.135. Curve bend” filter options
16.136. Applying example for the Emboss filter
16.137. Emboss” filter options
16.138. Applying example for the IWarp filter
16.139. IWarp” filter options (Settings tab)
16.140. IWarp” filter options (Animation tab)
16.141. With text
16.142. With two horizontal bars
16.143. Example
16.144. More White
16.145. More Black
16.146. Middle Value to Peaks
16.147. Foreground to Peaks
16.148. Only Foreground
16.149. Illustration
16.150. The same image, before and after applying “Apply Canvas” filter
16.151. Apply Canvas” options
16.152. The same image, before and after applying “Cartoon” filter
16.153. Cartoon” filter options
16.154. The same image, before and after applying Cubism filter
16.155. Cubism” filter options
16.156. Example illustrating the action of the “Use BackGround color” option
16.157. The option is not checked
16.158. The option is checked
16.159. The same image, before and after applying GIMPressionist
16.160. Presets” tab options
16.161. Paper” tab options
16.162. Brush” tab options
16.163. Orientation” tab options
16.164. Size” tab options
16.165. Placement” tab options
16.166. Color” tab options
16.167. General” tab options
16.168. Options of the “Orientation-map Editor” dialog
16.169. Size-map editor options
16.170. The same image, before and after applying “Oilify” filter
16.171. Oilify” filter options
16.172. The same image, before and after applying Photocopy filter
16.173. Photocopy” filter options
16.174. The same image, before and after applying SoftGlow filter
16.175. Soft Glow” filter options
16.176. From left to right: original image, bump map, bumpmapped image
16.177. Bump Map” filter options
16.178. Displacement examples
16.179. Options
16.180. Fractal trace” filter options
16.181. Illusion” filter options
16.182. From left to right: original image, mode 1, mode 2, with Divisions=4
16.183. An example of Make Seamless.
16.184. The “Map Object” filter applied to a photograph
16.185. Map Object” general options tab
16.186. Light” tab options
16.187. Material” tab options
16.188. Orientation” tab options
16.189. Box” tab options
16.190. Cylinder” tab options
16.191. From left to right: original image, after applying “Paper Tile” filter (division = 3)
16.192. Paper Tile” filter options
16.193. Small Tiles” filter options
16.194. The same image, before and after applying Tile filter
16.195. Tile” filter options
16.196. From left to right: original image, displace map, displaced image
16.197. With a non-linear gradient
16.198. With a complex gradient:
16.199. Warp filter options
16.200. With a 3.00 dither size:
16.201. With a 10° angle and 6 iterations:
16.202. Magnitude Map example:
16.203. Gradient map example
16.204. Vector map example
16.205. From left to right: original image, map, resulting image
16.206. Van Gogh (LIC)” filter options
16.207. Blurring with vertical gradient map
16.208. Blurring with a square gradient map
16.209. Texture example
16.210. Derivative option example
16.211. Action example of Filter Length on blur
16.212. Filter Length example on texture
16.213. Action example of Noise Magnitude on texture
16.214. Action example of Integration Steps on texture
16.215. Action example of Min/max values on texture
16.216. Example of a rendered plasma.
16.217. Plasma” filter options
16.218. Example of turbulent solid noise.
16.219. Solid Noise” filter options
16.220. Example of a rendered Flame.
16.221. The Edit Flame dialog
16.222. Applying example for the IFS Compose filter
16.223. Color transformation” tab options
16.224. Tutorial Step 2
16.225. Tutorial Step 3
16.226. Tutorial Step 4
16.227. Tutorial Step 5
16.228. Two examples of diffraction patterns.
16.229. The same image, before and after applying CML Explorer
16.230. CML Explorer” filter options(Hue)
16.231. Function graph of present settings
16.232. CML Explorer” filter options(Saturation)
16.233. CML Explorer” filter options (Value)
16.234. CML Explorer” filter options (Advanced)
16.235. CML Explorer” filter options (Others)
16.236. CML Explorer” filter options (Misc.ops)
16.237. Applying example for the Grid filter
16.238. Grid” filter options
16.239. An example of a rendered maze.
16.240. Maze” filter options
16.241. Jigsaw filter example
16.242. Jigsaw” filter options
16.243. Applying example for the Qbist filter
16.244. Three more or less random examples of qbist renderings.
16.245. Qbist” filter options
16.246. The same image, before and after applying Checkerboard filter
16.247. Checkerboard” filter options
16.248. Applying example for the Sinus filter
16.249. Sinus” filter options (Settings)
16.250. Sinus” filter options (Color)
16.251. Sinus filter options (Blend)
16.252. The same image, before and after applying Fractal Explorer filter
16.253. Parameters” options for Fractal Explorer filter
16.254. Color tab options
16.255. Loglog smoothing example
16.256. Fractal tab” options
16.257. The same image, before and after using Gfig
16.258. Gfig” filter options
16.259. The same image, before and after the application of “Sphere Designer” filter.
16.260. Sphere Designer” filter parameters
16.261.
16.262. Source images and their maps
16.263. Results
16.264. Applying example for the Film filter
16.265. Film” filter options (Selection)
16.266. Film” filter options (Advanced)
16.267. Example for the Optimize animation filters
16.268. Playback” filter options
16.269. ImageMap options
659. Subtractive color model
660. The GIF Save dialog
661. The JPEG Save dialog
662. The “Save as PNG” dialog
663. Additive color model
664. Colorcircle

List of Tables

13.1. Illustration of the effects of the three gradient-repeat options, for the “Abstract 2” gradient.

List of Equations

8.1. Example
8.2. Equation for layer mode “Normal
8.3. Equation for layer mode “Multiply
8.4. Equation for layer mode “divide
8.5. Equation for layer mode “screen
8.6. Equation for layer mode “Overlay
8.7. Equation for layer mode “Dodge
8.8. Equation for layer mode “burn
8.9. Equation for layer mode “hard light”, M > 128
8.10. Equation for layer mode “hard light”, M < 128
8.11. Equation for layer mode “screen
8.12. Equation for layer mode “Soft Light
8.13. Equation for layer mode “grain extract
8.14. Equation for layer mode “grain merge
8.15. Equation for layer mode “difference
8.16. Equation for layer mode “Addition
8.17. Equation for layer mode “Subtraction
8.18. Equation for layer mode “Darken Only
8.19. Equation for layer mode “Lighten Only