IPTC - International Press Telecommunications Council, 20 Garrick Street, London WC2E 9BT, UK Copyright 2013, IPTC, www.iptc.org, All Rights Reserved 2013-05-22T07:15:40+02:00 2008-02-29T12:00:00+00:00 2011-01-31T13:00:00+01:00 Line Line is a unit for measuring the resolution of optical systems. Pixel A pixel is a single point in a raster image. Typographic Point A point is the smallest unit to measure distances in typography. Its absolute size is different for the various systems like French and American Points.