and testing of the theories and programs to determine their effectiveness. The author and publisher make no warranty of any kind, expressed or implied, with regard to these programs or the documentation al x i i i Ta b l e O f C o n ten ts Displace 542 Fractal Trace 549 Illusion 550 Make Seamless 550 Map Object 551 Paper Tile 558 Small Tiles 558 Tile 560 Chapter effects • How to render fantastic patterns and images Part VII • Animations, or how AnimFrames can make it easy to create advanced web animations • Xinput, usage and installation of Wacom tablets in Linux

an Image (Scale) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 3.4.3 Make JPEGs Smaller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 541 15.12.6 Make Seamless . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . subdirectory of your home directory called .gimp-2.2. All of the information about the choices you make here goes into that directory. If you later remove that directory, or rename it as something like

subdirectory of your home directory called .gimp­2.2. All of the information about the choices you make here goes into that directory. If you later remove that directory, or rename it as something like continue. Feel free to press the continue button. 2. The purpose of this screen is only to make the user aware of the GIMP personal settings directory, subdirectories and files creation process Clicking on it brings up a dialog with a list of all the currently open images, allowing you to make a different one active if you want to. (Clicking on the window where the image is displayed will

--debug-handlers Enable non-fatal debugging signal handlers. Useful for GIMP debugging. --g-fatal-warnings Make all warnings fatal. Useful for debugging. --dump-gimprc Output a gimprc file with default settings selection channel as though it were a color channel, thereby “painting the selection”. Undoing When you make mistakes, you can undo them. Nearly everything you can do to an image is undoable. In fact, you can plug-ins. Scripts In addition to plug-ins, which are programs written in the C language, GIMP can also make use of scripts. The largest number of existing scripts are written in a language called Script-Fu

You'll see README files and a file called "gimprc". You should execute "cp gimprc ~/.gimprc" to make a copy of your own gimp configuration file. You'll need to edit ~/.gimprc to add the path where you like other image manipulation programs you may have used before. GIMP is structured in this way to make operations more familiar and easier to use. With a little practice, you can be editing images very From the menu shown in Figure 5, you can probe further down into more choices. For example, to make sure the image is full-color, you should move the mouse to select "Filters," then "Conversions,"

Single Window Mode GIMP often launches in a multi-window mode. Switch it to Single Window Mode to make it more simple. 1. Click on Windows on the top menu bar 2. Single Window Mode If you make a mistake press ESC and try again. 3. Press Enter to confirm your crop Automatic Colour Adjustments in GIMP You can try various basic colour adjustments to see if they make your picture picture look better. Sometimes they make it look worse! If so, select Edit then Undo (or CTRL Z). 1. Click on Colors 2. Click on Auto White Balance – good to start out with. Brings your image

window, right click on the XCT image and select “Duplicate Layer”. You should now have two layers • Make sure the copy layer is selected 4 In-Class Activity: Segmentation Using GIMP Making the copy image large number (e.g. 1144.00) to obtain a large circular brush • Draw over the entire copy image to make it completely black 5 In-Class Activity: Segmentation Using GIMP Segment the dendrites • Change

Alpha Channel Colour to Alpha Channel • You can assign a colour to the alpha channel, which will make all pixels in your image with the assigned colour transparent • In GIMP – Colors > Color to Alpha window of another image • Repeat this until one image has all of the desired layers • Finally, make each layer (except the bottom layer) show only its colour, making the underlying layers visible

Layer Tab. Whenever you wish to work on a particular layer you have to click on that layer to make it as the active layer When pressing on the eye you will hide that layer Eye = Visible

the selected tool.  The “Layers, Channel, Paths, Undo” window. These are the features that make GIMP and other image editing software more powerful than Paint. GIMP Toolbox Here are