NIH Image is a public domain image processing and analysis program for the Mac
Edit By BS Editor: It was developed at the Research Services Branch (RSB) of the National Institute of Mental Health (NIMH), part of the National Institutes of Health (NIH).

A free PC version of Image, called Scion Image for Windows, is available from Scion Corporation. There is also Image/J, a Java program inspired by Image that runs anywhere.

Image can acquire, display, edit, enhance, analyze and animate images. It reads and writes TIFF, PICT, PICS and MacPaint files, providing compatibility with many other applications, including programs for scanning, processing, editing, publishing and analyzing images. It supports many standard image processing functions, including contrast enhancement, Density profiling, smoothing, sharpening, edge detection, median filtering, and spatial convolution with user defined kernels. you can free download NIH Image 1.62 now.