ImageJ a Java image analysis and processing application that allows you to view, analyze, edit, save, process and print 32–bit, 16-bit and 8-bit pictures.
ImageJ provides support for many image formats including GIF, TIFF, JPEG, DICOM, BMP, FITS and ‘raw’, but also for stacks. ImageJ is multithreaded, so you are able to perform multiple operations in parallel.
ImageJ is able to calculate pixel and area value statistics for user-defined selections, it can measure angles and distances, it can generate density histograms or line profile plots.
ImageJ supports standard image processing functions such as contrast manipulation, sharpening, smoothing, edge detection and median filtering.
ImageJ 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.
ImageJ 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.
Here are some key features of "ImageJ":
· Runs Everywhere: ImageJ runs on Linux, Mac OS 9, Mac OS X, Windows, and the Sharp Zaurus PDA.
· Open Source: ImageJ and its Java source code are freely available and in the public domain. No license is required.
· User Community: ImageJ has a large and knowledgeable worldwide user community. More than 1400 users and developers subscribe to the ImageJ mailing list.
· Macros: Automate tasks and create custom tools using macros. Automatically generate macro code using the command recorder. More than 200 macros are available on the ImageJ Web site.
· Plugins: Extend ImageJ by developing plugins using ImageJ's built in text editor and Java compiler. More than 300 plugins are available.
· Toolkit: Use ImageJ as a image processing toolkit (class library) to develop applets, servlets or applications.
· Speed: ImageJ is the world's fastest pure Java image processing program. It can filter a 2048x2048 image in 0.1 seconds (*). That's 40 million pixels per second!
· Data Types: 8-bit grayscale or indexed color, 16-bit unsigned integer, 32-bit floating-point and RGB color.
· File Formats: Open and save all supported data types as TIFF (uncompressed) or as raw data. Open and save GIF, JPEG, BMP, PNG, PGM, FITS and ASCII. Open DICOM. Open TIFFs, GIFs, JPEGs, DICOMs and raw data using a URL. Open and save many other formats using plugins.
· Image display: Tools are provided for zooming (1:32 to 32:1) and scrolling images. All analysis and processing functions work at any magnification factor.
· Selections: Create rectangular, elliptical or irregular area selections. Create line and point selections. Edit selectoins and automatically create them using the wand tool. Draw, fill, clear, filter or measure selections. Save selections and transer them to other images.
· Image Enhancement: Supports smoothing, sharpening, edge detection, median filtering and thresholding on both 8-bit grayscale and RGB color images. Interactively adjust brightness and contrast of 8, 16 and 32-bit images.
What's New in This Release: [ read full changelog ]
· Added the Image>Stacks>Tools>Set Label command.
· Thanks to Stephan Saalfeld, fixed a bug that caused the width and height of selections to be capped at 99999.
· Thanks to Burri Olivier and Michael Schmid, fixed a bug that caused Analyze>Distribution to not work with ranges containing negative numbers.
· Thanks to Abed Alnaif, fixed a bug that caused Analyze>Plot Profile to sometimes not work correctly with wide segmented line selections.
· Thanks to Brian Barford, fixed a v1.47j regression that caused the Chart White Balance plugin to not work correctly.
· Fixed a v1.47o regression that caused Bio-Formats to throw an exception when opening virtual stacks.