The printer dot is the smallest unit of a digital image. The shape, characteristic, and interaction of each dot play an essential role in the perception of image quality. This paper details a practical closed loop process for measuring the imperfect dot. The discussion will cover a minimum set of measurable attributes, the procedure to obtain data, show an example of results and correlate outcome to visual assessment.
Marguerite Doyle, "Measuring the Imperfect Dot" in Proc. IS&T Int'l Conf. on Digital Printing Technologies (NIP16), 2000, pp 640 - 642, https://doi.org/10.2352/ISSN.2169-4451.2000.16.1.art00055_2