Notes on Morphology of Typefaces


  • Luciano Perondi Dipartimento di Culture del progetto, Università Iuav di Venezia
  • Roberto Arista Typotheque



typeface design, parametric typography, font classification


Designing a typeface implies the search for a visual coherence between a series of shapes with different structures. This coherence is the effect of different interdependent factors that can be described and measured.
The purpose of this analysis is to provide a detailed description of some of the main independent variables of the design of a typeface and their interactions. We will then present a study of the shape relationships between the glyphs of a typeface, we will identify some of the design variables of a typeface, we will give a description of these relations and use all these notions as a design and
teaching tool. This approach is inspired by the work of Donald Knuth and therefore has its roots in digital typeface design and can lead to a parametric approach to drawing.
Isolating the independent variables allows us to control the design choices and potentially to experimentally verify their effects. A detailed description also allows us to control through the study of functions the interpolations between shapes – a widespread practice since the 1990s to draw intermediate variants of typefaces. In this manuscript we will consider the shape of the glyphs intended as silhouettes, even if described by the outlines; therefore we will consider the impact of the perceptual interaction between black and white on the basic design variables.From an educational point of view, elaborating and verifying the effects of a variable and checking an interpolation, in addition to providing specific knowledge for the typography field, can be placed among the configuration exercises in the context of basic design. This method has been used at some courses of design in some Italian universities.


Beier, S., Oderkerk, C. A. (2022). Closed letter counters impair recognition. In Applied Ergonomics, No. 101, 103709.

Bringhurst, R. (2004). The elements of typographic style. Vancouver: Hartley & Marks.

Boschin, S. (2022). Forme tipografiche nel dominio delle frequenze. Sistema di analisi dei caratteri tipografici attraverso la trasformata discreta di Fourier bidimensionale. [Tesi di laurea, Università di Iuav di Venezia].

Kinross, R. (2005). Tipografia moderna. Saggio di storia critica. Roma: Stampa Alternativa.

Knuth, D. E. (1979). Mathematical typography. In Bulletin of the American Mathematical Society, Vol. 1, No. 2, pp. 337-373.

Legge, G. E., Bigelow, C. A. (2011). Does print size matter for reading? A review of findings from vision science and typography. In Journal of vision, Vol. 11, No. 5, p. 8.

Majaj, N. J., Pelli, D. G., Kurshan, P., Palomares, M. (2002). The role of spatial frequency channels in letter identification. In Vision research, Vol. 42, No. 9, pp. 1165-1184.

McCarthy, S. (2020). Digital Typography at Stanford. In She Ji: The Journal of Design, Economics, and Innovation, Vol. 6, No. 4, pp. 546-560.

Noordzij, G. (2005). The stroke. London: Hyphen Press.

Olocco, R. (2019). A new method of analysing printed type. In Journal of the Printing Historical Society, No. 31, pp. 191-222.

Olocco, R. (2019). A New Method of Analysing Printed Type: The Case of 15th-century Venetian Romans [Doctoral dissertation, University of Reading].

Perondi, L. (2016). “Digital type” by Robin Kinross. In AIS/Design, Storia e Ricerche, No. 8.

Regulation (EU) No 1169/2011 of the European Parliament and of the Council of 25 October 2011 on the provision of food information to consumers, n. 1169/2011 (2011).

Schulz, T. (2016). Internal validity in experiments for typefaces for people with dyslexia. In International Conference on Computers Helping People with Special Needs, pp. 335-338.

Southall, R. (1991). Character description techniques in type manufacture. In RIDT 91: Conference proceedings on Raster imaging and digital typography II, December 1991, pp. 16-27.

Southall, R. (2005). Printer’s Type in the Twentieth Century: Manufacturing and Design Methods. London: British Library.

Wallace, S., Bylinskii, Z., Dobres, J., Kerr, B., Berlow, S., Treitman, R., Kumawat, N., Arpin, K., Miller, D. B., Huang, J., & others. (2022). Towards Individuated Reading Experiences: Different Fonts Increase Reading Speed for Different Individuals. In ACM Transactions on Computer-Human Interaction (TOCHI), Vol. 29, No. 4, pp. 1-56.



How to Cite

L. Perondi and R. Arista, “Notes on Morphology of Typefaces”, diségno, no. 11, pp. 177–188, Dec. 2022.



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