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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 this version:
• v1.35j, 8 December 2005
° Added -ijpath, -port, -macro, -batch, -eval and -run command line options. These options are described at the beginning of ImageJ.java.
° Dialog boxes are no longer resizable, which removes the ugly "grow box" on Mac OS X.
° Keyboard shortcuts are now more likely to work when the "Threshold" and "B & C" windows are in front.
° Added a BARG image type (used by MCID) to the FileInfo class.
° Little-endian ARGB images are now imported correctly.
° Fixed a bug in Process>Subtract Background that generated errors along the right and bottom edges of the background corrected image.
° Fixed a bug that caused a bogus dialog box on startup with Java 1.3.1 on OS X.
° Fixed a bug on Mac OS X that sometimes caused more than one "save changes?" dialog to be open at a time.
° Fixed a bug in the getProfile() macro function that caused it to return incorrect data if the line selection started or ended on or outside the image boundary.
• Vladimir Pilny and Jiri Janacek contributed the Anisotropic Diffusion 2D plugin, a filter that reduces noise while preserving edges.
• Jerome Mutterer contributed the PDF Writer plugin.
• The OpenGL Example plugin by Ulf Dittmer shows how to use JOGL/OpenGL graphics.
• Gilles Carpentier contributed the Magnifying Glass Tool macro, which is documented at image.bio.methods.free.fr/magtooldoc.html.
• v1.35i, 18 November 2005
° The Analyze/Tools/Curve Fitting tool now accepts comma-delimited data, ignores invalid invisible characters, and displays R^2.
° The R^2 value displayed by Analyze/Calibrate is now calculated correctly.
° Added "Duplicate" to the drop down menu displayed when right-clicking on an image.
° Image/Duplicate creates unique image names by appending "-1", "-2". etc. to the name of the image being duplicated.
° Thanks to code contributed by Ulrik Stervbo, "Open" in the Roi Manager no longer clears the list and reads only .roi files in ZIP archives.
° Added sanity checks to the TIFF decoder.
° Added the selectionName, setSelectionName and toolID macro functions.
° Fixed bugs in File/Import/Text Image that caused it to sometimes fail with files containing invalid invisible characters and to sometimes not read the last line.
• Audrey Karperien contributed the Fractal Growth Models plugin.
• Audrey Karperien contributed a plugin that draws diffusion limited aggregate (fractal growth) models.
• v1.35h, 10 November 2005
° Added "24-bit Integer" image type to File/Import/Raw.
° Fixed a bug, introduced in 1.35g, that sometimes caused a bogus error message when launching ImageJ on Windows.
° Fixed a bug that could caused an extra error message when attempting to open a LUT.
• Jon and Jeff Hardin contributed the QuickTime Stack Writer plugin.
• v1.35g, 3 November 2005
° On Windows, dropping an image on the ImageJ icon, when ImageJ is already running, no longer launches another copy of ImageJ. ImageJ uses sockets to detect if it is already running, a technique suggested by Curtis Rueden.
° On Mac OS X, images dropped on the ImageJ icon now open when ImageJ is not already running.
° Added the Analyze/Distribution command, based on a plugin by Gabriel Landini, and removed the particle analyzer "Bins" and "Area Distribution" options.
° Pressing Esc cancels a dialog box.
° The particle analyzer supports redirected sampling of RGB images. Note that redirected sampling is enabled using the "Redirect To:" option in Analyze/Set Measurements.
° Added an "Update All When Normalizing" option to Process/Enhance Contrast that appears with images that have a selection.
° Changed the "Interpolate Images Edit>Options>Image to "Interpolate Zoomed Images".
° Process/Binary/Threshold and "Auto" in the thresholding tool set the threshold levels of the binary images they create.
° Newly created elliptical selections are allowed to extend beyond the image boundary.
° The toolbar double click threshold was changed from 500 to 650 milliseconds.
° The macro interpreter displays an "Arrays of arrays not supported" message when a macro tries to assign an array to an array element.
° The X axis range (histMin and histMax) of 16-bit images can be be set in the getHistogram() macro function.
° Added the File.exists(), File.getName(), File.getParent(), File.getAbsolutePath(), File.isDirectory(), File.length(), File.makeDirectory(), File.dateLastModified(), File.lastModified(), File.delete() and File.separator() macro functions.
° Fixed a bug that could cause an exception when using the setupUndo() macro function.
° Fixed a bug that caused Process/Enhance Contrast to not work correctly with non-rectangular selections.
° Fixed a recently introduced bug that caused attempts to add/subtract a polygon selection to/from an existing selection to fail.
° Worked around a Mac OS X/Java 5.0 bug that caused X, Y coordinates displayed in plot windows to be truncated.
° Fixed bugs in the setThreshold(), setAutoThreshold(), resetThreshold(), setMinAndMax() and getMinAndMax() macro functions that caused them to sometimes fail with 16-bit images, especially signed 16-bit images.
• Jerome Mutterer contibuted the Tiff Comments Editor macro set, which lets you edit the TIFF comments field of the active image.
• Kunito Yoshida contributed the Windowed-Sinc Filter plugin, which does low pass filtering of time series stacks.
• Jon Harmon developed DStretch, a plugin for digital enhancement of pictographs. He also created a customized ImageJ applet that includes DStretch and 7 sample pictographs.
• Dimiter Prodanov contributed a
System System requirements:
• Mac OS X 10.0 or higher
ImageJ is freeware
For more information, visit:
http://rsb.info.nih.gov/ij/
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