Book Image

Image Processing with ImageJ

Book Image

Image Processing with ImageJ

Overview of this book

Digital image processing is an increasingly important field across a vast array of scientific disciplines. ImageJ's long history and ever-growing user base makes it a perfect candidate for solving daily tasks involving all kinds of image analysis processes. Image Processing with ImageJ is a practical book that will guide you from the most basic analysis techniques to the fine details of implementing new functionalities through the ImageJ plugin system, all of it through the use of examples and practical cases. ImageJ is an excellent public domain imaging analysis platform that can be very easily used for almost all your image processing needs. Image Processing with ImageJ will start by showing you how to open a number of different images, become familiar with the different options, and perform simple analysis operations using the provided image samples. You will also learn how to make modifications through ImageJ filters and how to make local measurements using the selections system. You will also find the instructions necessary to record all the steps you perform so they can be saved and re-run on the same image to ensure analysis reproducibility. Finally, you will get to know some different ImageJ plugins and will learn how to implement your own.
Table of Contents (13 chapters)
Image Processing with ImageJ
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Index

Some useful procedures


There is a very extensive compilation of all the functions available in the macro language on the ImageJ website (http://rsbweb.nih.gov/ij/developer/macro/functions.html). In this section, we are offering a brief explanation of some of the operations that you are most likely to use. Instead of just listing the name of the necessary functions, we will ask some common questions and then answer them using code.

Note that finding out what command does a specific function is very easy: just start the recorder and run the command you are interested on running in your macro. You can then copy and paste the resulting line and modify the parameters accordingly.

Opening an image from a macro

There are two ways to open an image file from your hard disk (or from a URL). For an interactive way (you need input from the user, typically the file path) just run the following line:

open();

A dialog will appear asking you for the file location inside your hard disk. Just double click on it...