This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Notes
- 1.
We assume here an ideal situation in which each point (x,y) in the superposition behaves indepen dently of its neighbourhood. We do not consider effects such as light scattering inside the printed support, which may create some mutual influence between neighbouring points, or various interactions between the superposed inks which may cause them to deviate from the behaviour of ideal filters.
- 2.
This assumes, of course, that the overprinted inks are not opaque. In the case of opaque inks the multiplicative superposition rule is no longer valid, and it is replaced by another rule according to which the chromatic reflectance of the superposition at any point (x,y) equals to the chromatic reflectance of the last printed ink at that point.
- 3.
Note that in Sec. 2.2 we expressed the same property from the dual, Fourier point of view, in terms of cutoff frequencies in the spectral domain.
- 4.
In Trinitron tubes colour phosphors are indeed arranged as vertical stripes [Hunt87 p. 26]; in other types of TV screens the colour phosphors are arranged as repetitive dot-screens, but the resulting moiré effects are similar.
- 5.
The additive and multiplicative composition rules for colour spectra (Remark 9.2) should not be confused with the additive and multiplicative layer superposition rules of Remark 2.1 (see Sec. 2.2).
- 6.
This effect of blending red and green microstructure elements into a yellow colour (as on a TV screen) can be best observed in the superposition of colour films on a light table; however, when printed on paper and observed by reflectance, the yellow colour appears darker, rather brownish, owing to the lower light intensity and the spectral impurities of the printing inks [Hunt87 pp. 222–225].
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2009 Springer-Verlag London Limited
About this chapter
Cite this chapter
Amidror, I. (2009). Polychromatic moiré effects. In: Amidror, I. (eds) The Theory of the Moiré Phenomenon. Computational Imaging and Vision, vol 38. Springer, London. https://doi.org/10.1007/978-1-84882-181-1_9
Download citation
DOI: https://doi.org/10.1007/978-1-84882-181-1_9
Publisher Name: Springer, London
Print ISBN: 978-1-84882-180-4
Online ISBN: 978-1-84882-181-1
eBook Packages: Mathematics and StatisticsMathematics and Statistics (R0)