Book Image

ImageMagick Tricks

By : Sohail Salehi
Book Image

ImageMagick Tricks

By: Sohail Salehi

Overview of this book

<p>The book is packed with interesting and fun examples. We had a lot of fun coming up with cool ways to demonstrate ImageMagick's power, and we're sure you'll have fun learning how to create them.<br /><br />Although the printed book is in black and white, there is a full colour PDF of the screenshots freely available that includes all of the images in the book. Use it to see exactly what the ImageMagick effects look like in colour, or browse through it and see just what you'll learn to do with this book.<br /><br />ImageMagick is a free software suite to create, edit, and compose bitmap images using text-based commands. The commands can be issued from the command line, but more often will be included in web or desktop applications &acirc;&euro;&ldquo; carrying out complex image-manipulation tasks in response to the user's input.<br /><br />ImageMagick is a popular way for generating images on-the-fly in web pages, whether it's generating thumbnails from a large image, or creating complex combinations of images, text, and effects chosen by a visitor or the web site's creator.</p>
Table of Contents (18 chapters)
ImageMagick Tricks
Credits
About the Author
About the Reviewers
Preface
5
Identify, Display, and Import
Index

Artistic Options


For readers who are interested in the artistic capabilities of ImageMagick, this section will be wonderful. The artistic options mainly work on pixels and colors of an image so that it looks different. Most of them act on groups of pixels that are specified within a parametric radius or a specific color level.

Some of these options are discussed in the following table and the remainder will be studied during the next chapters.

Option

Parameters

Description

Charcoal

value

Converts the image to a charcoal drawing. Bigger amounts for value will produces thicker lines.

Edge

radius

Detect edges in an image by finding harmonic adjacent colors in the specified radius.

Emboss

radius

Simply emboss an image with provided radius.

Paint

radius

The most frequent color is identified and then the others are replaced by that and an oil paint effect produced.

Posterize

levels

Reduce the image colors to a limited number of color levels.

Shade

azimuthxheight

Convert the...