Filters and Effects CHAPTER (Web site optimization) 7
Filters and Effects CHAPTER 7 The GIMP has a huge collection of special effects, tools, and techniques you can use to modify your image or create something brand new. You ve probably already experimented with some of GIMP s plug-ins, but there may be some interesting toys that you haven t seen yet. In this chapter, I ll take you on a tour of some of the GIMP s filters and special effects. I won t try to cover everything there s always more to explore but this chapter should give you a taste of the sorts of effects you can create. You ll learn about the following: Image window filters versus Toolbox Xtns Filters for images Scripts to make new images Image Window Filters vs. Toolbox Xtns Most of the GIMP s fun special effects are located in two places: the image window s Filters menu (plus a few in other menus, such as the Colors menu), and the Toolbox window s Xtns menu. What s the difference? Simply, filters operate on an existing image, while items in the Toolbox s Xtns menu will create a new image. The Toolbox options generally create buttons, arrows, bullets and other items usable in web pages or applications, fancy text that you can use for logos or posters, and patterns that you can use as the background to an image or in effects in other images. Plus, there are a few miscellaneous tools to create items, such as a shaded sphere. Filters can change an image in all sorts of ways. There are straightforward operations you ve already used such as blurring, sharpening, or adding drop shadows. There are various artistic filters that can make your photo look like a painting or sketch. There are filters to handle edge detection or noise reduction, and distortion filters that can bend your image like a pretzel. I ll cover filters first, and then move on to the operations in the Toolbox that can create new images.
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