IPW does not include its own image display program. Since the X windowing system has become widely available, many public domain image display programs have been written. We chose the shareware program xv for use with IPW. xv has been modified to read IPW images, and to perform certain functions necessary for the image processing operations performed at CRREL.
description of xv by the author, John Bradley, University of Pennsylvania, GRASP Lab March 3, 1992