You can either follow along with these instructions on the website or you can download the entire set of instructions in either PDF , Rich Text Format , or Plain Text . PIT is originally written in Unix but the program has been modified to run under Windows. Thus, PIT is essentially a training tool for learning by doing the basics of image processing.
PIT can display a raw image, or a specially stretched single image representing some given band.
It does not routinely allow for simultaneous display of multiple images, so that visual comparison must be carried out by creating or calling for one image at a time. PIT also permits color composites, using three input images assigned arbitrarily to the red, green, and blue monitor guns. PIT is also capable of producing single ratio images in black and white, or colored ratio composites. These also can be combined in groups of three to generate color composites. PIT's primary use is in image classification.