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

Image reading/writing


In this section, we learn how to open and write different images.

Opening images with a certain format

First of all, we will need an image to open. For this first exercise, we are going to use one of the several public domain images showing the "happy face" on Mars. Go to http://www.msss.com/msss_images/2008/01/31/index.html and download the image you see (happy_face.jpg, image credit to NASA / JPL / Malin Space Science Systems). Store it on your hard disk in a place that is easy to access, as you shall need it right away.

Now run ImageJ, execute File | Open..., and select the file you just downloaded. ImageJ will load the image contents into a new window and you should see something like this:

You just opened your first image using ImageJ. Smile!

We have scaled the image to fit in the page (note the (50%) on the title bar; more on this later), so your window will be bigger. In any case, you can check some common elements to all images opened in ImageJ.

  • Image title: In this...