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Quality perception and discrimination thresholds in quantised triangle meshes

Almutairi, Aeshah and Saarela, Toni and Ivrissimtzis, Ioannis (2021) 'Quality perception and discrimination thresholds in quantised triangle meshes.', Sixth International Workshop on Pattern Recognition Beijing, China, 25-27 June 2021.


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.

Item Type:Conference item (Paper)
Full text:(AM) Accepted Manuscript
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Publisher 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.
Date accepted:No date available
Date deposited:03 November 2021
Date of first online publication:06 August 2021
Date first made open access:03 November 2021

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