3646 ImageJ is a public domain Java image processing program inspired by NIH Image for the Macintosh. It runs, either as an online applet or as a downloadable application, on any computer with a Java 1.1 or later virtual machine. ImageJ has an amazing amount of image editing power and capability for a freeware application.

ImageJ Features

Runs Everywhere:
ImageJ runs on Linux, Mac OS 9, Mac OS X and Windows.
Data Types:
8-bit grayscale or indexed color, 16-bit unsigned integer, 32-bit floating-point and 32-bit RGB color.
File Formats:
Open and save all supported data types as TIFF (uncompressed) or as raw data. Open and save GIF, JPEG, BMP and ASCII. Open DICOM, FITS, PNG and PGM. Open TIFFs, GIFs, JPEGs, DICOMs and raw data using a URL. Open and save many other formats using plugins.
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!
Macros:
Automate tasks and create custom tools using macros. More than 120 example macros are available on the ImageJ Web site.
Plugins:
Extend ImageJ by developing plugins using ImageJ's built in command recorder, editor and Java compiler. Over 100 plugins are available.
Toolkit:
Use ImageJ as a image processing toolkit (class library) to develop applets, servlets or applications.
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.
Regions of Interest:
Create rectangular, elliptical or irregular regions of interest (ROIs). Draw, fill, clear, filter or measure ROIs. Transfer an ROI to another image.
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.
Geometric Operations:
Crop, scale, resize and rotate. Flip vertically or horizontally.
Analysis:
Measure area, mean, standard deviation, min and max of ROI or entire image. Measure lengths and angles. Use real world measurement units such as millimeters. Calibrate using density standards. Generate histograms and profile plots.
Editing:
Cut, copy or paste images or selections. Paste using AND, OR, XOR or "Blend" modes. Add text, arrows, rectangles, ellipses or polygons to images.
Color Processing:
Split a 32-bit color image into RGB or HSV components. Merge 8-bit components into a color image. Convert an RGB image to 8-bit indexed color. Apply pseudo-color palettes to grayscale images.
Stacks:
Display a "stack" of related images in a single window. Process an entire stack using a single command. Open a folder of images as a stack. Save stacks as multi-image TIFF files.

(*) Process/Smooth command, 8-bit image, 3GHz Windows PC, IE 6.0, Microsoft Java 1.1.4.

New in version 1.3.8s:
• The Gaussian Blur and Unsharp Mask filters now display a single progress bar instead of two or six.
• When saving in JPEG format, the current quality setting (0-100) is displayed in the title bar of the "Save As" dialog.
• Added the ROI Manager More>>Remove Slice Info and More>>Specify commands.
• The ROI Manager Measure command no longer displays a "Process Stack?" dialog.
• ImageJ now opens gzipped FITS (".fits.gz") and raw (".gz") images.
• The File.directory and File.name macro functions now return the path to the last file dragged and dropped on the ImageJ window.
• Added the getDimensions(width,height,channels,slices,frames) macro function.
• Added the IJ.getScreenSize() method.
• Added a getBounds() method to the Line class.
• Added the OpenDialog.setLastDirectory() and OpenDialog.setLastName() methods.
• Added the setInitialParameters(double[]) method to the CurveFitter class.
• Fixed bugs that could cause ImageJ to hang, especially when using the Sync_Windows plugin or when quitting.
• Fixed a bug that sometimes caused File>New>Image and File>Open to display duplicate dialog boxes when invoked by typing ctrl-n or ctrl-o.
• Fixed a bug that caused dialog boxes to be incorrectly positioned on multi-monitor Linux systems.
• Fixed a bug that caused the standard deviation calculated by Analyze>Tools>Curve Fitting to be incorrect.
• Fixed a bug that could cause an exception when opening 16-bit grayscale PNGs.
• Fixed a bug that caused directories with spaces in the path to fail to open when dragged and dropped on the ImageJ window.
• Fixed a bug that could cause an exception in the particle analyzer when processing a stack with more than 10,000 particles and "Add to Manager" was checked in the dialog box.
• Fixed a bug, introduced in v1.38q, that caused stacks with blank slice labels to not be correctly saved in TIFF format.
• Fixed a bug, introduced in v1.38n, that could cause an exception when opening multiple 48-bit tiff images and stacks using JFileChooser.

• The Concentric Circles plugin displays concentric rings in a non-destructive overlay.
• The Save Virtual Stack As 8-bit TIFFs macro demonstrates how to process and save a virtual (disk resident) stack.
System requirements:
• Mac OS X 10.1 or higher

ImageJ is freeware

For more information, visit:
http://rsb.info.nih.gov/ij/

Plugins for ImageJ are available here:
http://rsb.info.nih.gov/ij/plugins/index.html

Login   or   Register    

Name:

Email:

Location:

URL:

Smileys

Remember my personal information

Notify me of follow-up comments?

Submit the word you see below: