Quality perception and discrimination thresholds in quantised triangle meshes

Aeshah Almutairi; Toni Saarela; Ioannis Ivrissimtzis

doi:10.1117/12.2604720

6 August 2021 Quality perception and discrimination thresholds in quantised triangle meshes

Aeshah Almutairi, Toni Saarela, Ioannis Ivrissimtzis

Proceedings Volume 11913, Sixth International Workshop on Pattern Recognition; 1191308 (2021) https://doi.org/10.1117/12.2604720
Event: Sixth International Workshop on Pattern Recognition, 2021, Chengdu, China

Abstract

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.

Citation Download Citation

Aeshah Almutairi, Toni Saarela, and Ioannis Ivrissimtzis "Quality perception and discrimination thresholds in quantised triangle meshes", Proc. SPIE 11913, Sixth International Workshop on Pattern Recognition, 1191308 (6 August 2021); https://doi.org/10.1117/12.2604720

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