ImageJ 10.2 - Scriptable Java app for scientific image processing/analysis. (Free)
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.
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.
ImageJ is being developed on Mac OS X using its built in editor and Java compiler, plus the BBEdit editor and the Ant build tool. The source code is freely available. The author, Wayne Rasband, is at the Research Services Branch, National Institute of Mental Health, Bethesda, Maryland, USA.
- Added the Edit>Options>DICOM command.
- Added a "Headless" style to the arrow tool.
- Overlays are preserved when saving in JPEG format.
- Restored the ROI Manager "FIll" and "Draw" commands.
- Added the getInfo("overlay") macro function (example).
- Fixed regressions that caused 16-bit composite images to be converted to grayscale when saving in JPEG and PNG format.
- Fixed a bug that caused the particle analyzer to open the Results window when the "ImageJ" window was not open.
- Fixed a bug that caused the File>Open Next command to not work correctly with composite images and hyperstacks.
- Fixed a bug that caused stacks created by importing Analyze format images using File>Import>Image Sequence to contain duplicate images.
- Fixed a bug that sometimes caused the wrong channel to be selected when clicking on the channel slider.
- Jerome Mutterer contributed MacBook Position, a plugin that uses the JNI library at www.shiffman.net/p5/sms/ to read a MacBook's Sudden Motion Sensor.
- Gabriel Landini has released Dithering, a macro that dithers an image using one of nine available methods, including Floyd-Steinberg, Atkinson, Jarvis-Judice-Ninke, Stucki, Bayer, Clustered and Random.