18 Sep, 2009
ImageJ 1.43g - Scriptable Java app for scientific image processing/analysis. (Updater)
Posted by: admin In: MacUpdate
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 Process>Batch>Virtual Stack command.
- Added the “Draw As Overlay” (display ROIs using a display list) and “Remove Overlay” commands to the ROI Manager.
- Multi-point and text selectons are now properly displayed in the ROI Manager “Show All” mode.
- Tiff stacks with a .tif extension open as virtual stacks when dragged and dropped on the “>>” toolbar icon.
- The Image>Show Info command and the getMetadata() macro function retrieve the “DateTime” and “Software” TIFF tags.
- Plugins>Compile and Run defaults to the plugins directory instead of the ImageJ directory.
- Added the ImageCanvas.setDisplayList(Roi,Color) method (example).
- Added the IJ.handleException() and IJ.setExceptionHandler() methods.
- Fixed a bug that could cause an exception when using the Measure command with segmented line selections wider than 1 pixel.
- Fixed a bug that caused commands that opened a web page to fail on Mac OS X 10.6 when running the 32-bit version of Java 1.6.
- Fixed a bug that caused “[aborted]” to be displayed in the Log window when a macro called using runMacro() was canceled.
- Fixed a bug that could cause macro files containing 100 or more functions to fail to install.
- Fixed a bug in Analyze>Measure that cause it to incorrectly calculate the area of line selections on spatially calibrated images and to incorrectly calculate the mean of straight line selections wider than one pixel on spatially calibrated images.
- Jacqui Ross has written four ImageJ Tutorials (in PDF format), Introduction to ImageJ, Color Analysis Tools, Colocalization Tools and Using and Writing Macros.
- Joachim Wesner contributed TIFF Tags, a plugin that displays the tags of a specified TIFF file.
- Curtis Rueden contributed TIFF Dumper, a plugin that uses the Bio-Formats plugin to display the TIFF tags of the current image.
- Marco Righi has released Vessel_Distribution, a macro that compares the space-filling properties of microvessels networks.