ImageJ

Introduction

ImageJ is a public domain Java image processing program that runs either as an online applet or as a downloadable application, on any computer with a Java 1.4 or later virtual machine.

It can display, edit, analyze, process, save and print 8-bit, 16-bit and 32-bit images. It can read many image formats including TIFF, GIF, JPEG, BMP, DICOM, FITS and "raw". It supports "stacks", a series of images that share a single window. It is multithreaded, so time-consuming operations such as image file reading can be performed in parallel with other operations.

Capabilities, Benefits, and Key Features

  • It can calculate area and pixel value statistics of user-defined selections.

  • It can measure distances and angles.

  • It can create density histograms and line profile plots.

  • It supports standard image processing functions such as contrast manipulation, sharpening, smoothing, edge detection and median filtering.

  • It does geometric transformations such as scaling, rotation and flips. Image can be zoomed up to 32:1 and down to 1:32. All analysis and processing functions are available at any magnification factor.

  • The program supports any number of windows (images) simultaneously, limited only by available memory.

  • Spatial calibration is available to provide real world dimensional measurements in units such as millimeters. Density or gray scale calibration is also available.

  • ImageJ was designed with an open architecture that provides extensibility via Java plugins.

    • Custom acquisition, analysis and processing plugins can be developed using ImageJ's built in editor and Java compiler. User-written plugins make it possible to solve almost any image processing or analysis problem.

Limitations / Technology Requirements

ImageJ runs, either as an online applet or as a downloadable application, on any computer with a Java 1.4 or later virtual machine.

What can I expect?

  • Support Tier: Tier 1 - Best Effort: While approved for use there is no institutional support for the application. IT Help would make an effort to assist using general technical knowledge. If unable to do so, the user would need to resolve the issue on their own or contact a commercial vendor for assistance.

  • Acquisition Model: Direct Download: Software is downloaded to a local computer and installed to run from that specific device.

  • Licensing Model: Local user license: The license is included with the initial installation. In rare cases, a local license file may need updated periodically to contiue to use the application. Check the entry for that specific application for instructions to do so.

  • Authentication Model: None: No authentication is required after the application is acquired.

Who may use it?

Any student, faculty, or staff may download the software for personal use. The application is also installed on many lab computers around campus, especially in the sciences.

How do I get started?

Instructions for how to download ImageJ can be found here.

Is there a charge to me or my department?

No charge, download is free