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Quality perception and discrimination thresholds in quantised triangle meshes

Almutairi, Aeshah; Saarela, Toni; Ivrissimtzis, Ioannis

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Aeshah Almutairi

Toni Saarela


At certain stages of the graphics pipeline, and most notably during compression for transmission and storage, triangle meshes may undergo a fixed-point arithmetic quantisation of their vertex coordinates. This paper presents the results of a psychophysical experiment, where discrimination thresholds between the original unquantised triangle meshes, and the quantised at various levels of quantisation versions of them, were estimated. The experiment had a two-alternative forced choice design. Our results show that the amount of geometric information of a mesh, as measured by its filesize after compression, correlates with the discrimination threshold. On the other hand, we did not find any correlation between the discrimination thresholds and the quality of the underlying meshing, as measured by the mean aspect ration of the mesh triangles.


Almutairi, A., Saarela, T., & Ivrissimtzis, I. (2021). Quality perception and discrimination thresholds in quantised triangle meshes. .

Conference Name Sixth International Workshop on Pattern Recognition
Conference Location Beijing, China
Start Date Jun 25, 2021
End Date Jun 27, 2021
Online Publication Date Aug 6, 2021
Publication Date 2021
Deposit Date Nov 1, 2021
Publicly Available Date Nov 3, 2021
Publisher SPIE
Volume 11913
ISBN 9781510646896


Accepted Conference Proceeding (6.7 Mb)

Copyright Statement
Copyright (2021) Society of Photo Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

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