Sebastian Montabone is the vision of computer experts who want us to use the camera and image processing software to come up with artwork. In this book, he teaches increased difficulty of image processing techniques based on freely available tools. This book teaches you to use the best tool for the job, and focuses on technique, not the environment or the toolchain that they run. Some free and open source programs covered such as GIMP, Hugin, Luminance HDR (formerly known as Qtpfsgui), UFraw, Imagemagick, exiftool, and Avidemux. Also in this book, you '? Will? Learn about Canon Hacker Development Kit (CHDK), which extend the features of several cameras. What you will learn Learn how to process your photos with examples. Who this book is for This book is for anyone who is interested in photography, image processing, or image editing software for free, without exception.