ImageJ runs on Linux, Mac OS 9, Mac OS X and Windows.
8-bit grayscale or indexed color, 16-bit unsigned integer, 32-bit floating-point and 32-bit RGB color.
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.
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!
Automate tasks and create custom tools using macros. More than 120 example macros are available on the ImageJ Web site.
Extend ImageJ by developing plugins using ImageJ's built in command recorder, editor and Java compiler. Over 100 plugins are available.
Use ImageJ as a image processing toolkit (class library) to develop applets, servlets or applications.
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.
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.
Crop, scale, resize and rotate. Flip vertically or horizontally.
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.
Cut, copy or paste images or selections. Paste using AND, OR, XOR or "Blend" modes. Add text, arrows, rectangles, ellipses or polygons to images.
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.
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 1.3.7j:
Added the Edit/Selection/Create Selection command, based on the Threshold_To_Selection plugin contributed by Johannes Schindelin. This command creates a composite selection from a thresholded image or a binary mask.
Send commands like "\\Clear" and "\\Update:text" to the Log window to clear it or update its contents. Refer to the LogWindowTricks macro for an example.
Error and message dialogs use a larger font.
Added the get(x,y), set(x,y,value), getf(x,y), setf(x,y,value), getIntArray(), setIntArray(int), getFloatArray() and setFloatArray(float) methods to the ImageProcessor class. The get() and set() methods read/write pixels as integers, getf() and setf() as floats. The *Array() methods read/write the image data as 2D int and float arrays.
Added the TextPanel.clear() method.
Fixed a but that caused File/New/Image to sometimes create incorrect 8-bit and RGB "Ramp" images.
Fixed a bug that caused macros with braceless if-else statements containing calls to built in string functions that returned null to fail.
Fixed a bug, introduced in 1.35p, that caused macro calls to Image/Properties to fail to set the voxel depth.
Mac OS X 10.1 or higher
ImageJ is freeware
For more information, visit:
Plugins for ImageJ are available here:
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