IMAFILE: An interactive program for experimenting with visual & digital imaging
A.G.-Valdecasas, J. R. Elvira, J.M. Becerra & E. Bello
The American Biology Teacher, Volume 60, Nº 5 May 1998

Abstract
The traditional comparison between the eye and the camera is a useful teaching analogy in human physiology. Unfortunately, this analogy covers only a part of the human vision process, mainly the way images are projected onto the retina. How the eye and the brain process the image is another very important step in order to understand vision, but we lack useful analogies that could help to introduce these issues to students.
Digital imaging, the processing of visual information by computers, is a attractive subject for young students. The purpose of this paper is to show that digital imaging can provide adequate analogies to some of the processing operations occurring during perception.