imagej - 1.54g-1 main

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.
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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.
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Spatial calibration is available to provide real world dimensional
measurements in units such as millimeters. Density or gray scale
calibration is also available.
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ImageJ is developed by Wayne Rasband (wayne@codon.nih.gov), is at the
Research Services Branch, National Institute of Mental Health, Bethesda,
Maryland, USA.