ImageJ is an image processing program that allows scientists to enhance and analyze images to gain data. With ImageJ you can:

ImageJ, also called NIH Image, was created by W.S. Rasband at the National Institute of Health. It is a free Java program that is constantly being updated. Many professional and amateur scientists utilize the many features of ImageJ for research purposes. Although at first it may seem confusing, it becomes fairly simple to work your way through it if you follow the guidelines outlined on this and other helpful websites.