A 3-parameter Design Space for Fine Texture Display [thesis]

Rebecca Kate Fenton Friesen
2020 unpublished
A 3-parameter Design Space for Fine Texture Display Rebecca Fenton Friesen Friction modulation technology developed over the past decade now enables the creation of rich textural effects on flat haptic displays. However, an intuitive and manageably small design space for construction of such haptic textures remains an unfulfilled goal for user interface designers. In this thesis, I explore perceptually relevant features of fine texture for use in texture construction and modification. Beginning
more » ... fication. Beginning with simple sinusoidal patterns of friction force that vary in frequency and amplitude, I define "irregularity" as a third building block of a texture pattern and show it to be a scalable feature distinct from the others using multidimensional scaling. Peoples' verbal descriptions of the frequency, amplitude, and irregularity design space further demonstrate that they can distinguish all three parameters and identify their qualitative characteristics. In addition to defining a workspace of continuously scalable parameters, I explore how adequately textures in this workspace can perceptually reconstruct a wider body of texture patterns. This illustrates the extent to which the three parameters fully account for the perceptually relevant characteristics of fine texture. In a pair of human
doi:10.21985/n2-j2dz-t144 fatcat:f35j4jlivbd2dhisfmvaoc3fda