Welcome to the first chapter of Image Processing with ImageJ. ImageJ is public domain multi-platform software for image analysis written in the Java programming language. It includes predefined functions for a great variety of common tasks and can be extended easily using macros, scripting in several programming languages (including JavaScript and Python), and Java plugins.

In this brief introduction, you will read what ImageJ is, and how to install it, along with some minor configuration tricks. By the end of this chapter, you will have a working ImageJ installation in your system. Contents of this chapter include: