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The Definitive Guide to ImageMagick
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An open source project backed by years of continual development, ImageMagick supports over 90 image formats and can perform impressive operations such as creating images from scratch; changing colors; stretching,
rotating, and overlaying images; and overlaying text on images. Whether you use ImageMagick to manage the family photos or to embark on a job involving millions of images, this book will provide you with the knowledge to manage your images with ease.
The Definitive Guide to ImageMagick explains all of these capabilities and more in a practical, learn-by-example fashion. You'll get comfortable using ImageMagick for any image-processing task. Through the book's coverage of the ImageMagick interfaces for C, Perl, PHP, and Ruby, you'll learn how to incorporate ImageMagick features into a variety of applications.
Michael Still
The Definitive Guide
to ImageMagick
The Definitive Guide to ImageMagick
Copyright 2006 by Michael Still
All rights reserved. No part of this work may be reproduced or transmitted in any form or by any means,
electronic or mechanical, including photocopying, recording, or by any information storage or retrieval
system, without the prior written permission of the copyright owner and the publisher.
ISBN (Hardback): 1-59059-590-4
Library of Congress Cataloging-in-Publication data is available upon request.
Printed and bound in the United States of America 9 8 7 6 5 4 3 2 1
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owner, with no intention of infringement of the trademark.
Lead Editor: Matt Wade
Technical Reviewer: Doug Jackson
Editorial Board: Steve Anglin, Dan Appleman, Ewan Buckingham, Gary Cornell, Tony Davis, Jason Gilmore,
Jonathan Hassell, Chris Mills, Dominic Shakeshaft, Jim Sumser
Project Manager: Kylie Johnston
Copy Edit Manager: Nicole LeClerc
Copy Editor: Kim Wimpsett
Assistant Production Director: Kari Brooks-Copony
Production Editor: Linda Marousek
Compositor and Artist: Kinetic Publishing Services, LLC
Proofreader: Kim Burton
Indexer: Carol Burbo
Cover Designer: Kurt Krames
Manufacturing Director: Tom Debolski
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The information in this book is distributed on an as is basis, without warranty. Although every precaution
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by the information contained in this work.
The source code for this book is available to readers at http://www.apress.com in the Source Code section
and also at http://www.stillhq.com.
Contents at a Glance
Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii
About the Author . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv
About the Technical Reviewer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvii
Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xix
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxi
■CHAPTER 1 Installing and Configuring ImageMagick. . . . . . . . . . . . . . . . . . . . . . . . . 1
■CHAPTER 2 Performing Basic Image Manipulation . . . . . . . . . . . . . . . . . . . . . . . . . . 31
■CHAPTER 3 Introducing Compression and Other Metadata . . . . . . . . . . . . . . . . . . 51
■CHAPTER 4 Using Other ImageMagick Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
■CHAPTER 5 Performing Artistic Transformations . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
■CHAPTER 6 Performing Other Image Transformations . . . . . . . . . . . . . . . . . . . . . . 147
■CHAPTER 7 Using the Drawing Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
■CHAPTER 8 PerlMagick: ImageMagick Programming with Perl . . . . . . . . . . . . . 263
■CHAPTER 9 Implementing Your Own Delegate with C . . . . . . . . . . . . . . . . . . . . . . 291
■CHAPTER 10 RMagick: ImageMagick Programming with Ruby. . . . . . . . . . . . . . . 301
■CHAPTER 11 MagickWand: ImageMagick Programming with PHP . . . . . . . . . . . 311
■CHAPTER 12 Where to Go from Here. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 319
■INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 321
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