Perceptual Measurement of Surface Texture
Lead Research Organisation:
Heriot-Watt University
Department Name: S of Mathematical and Computer Sciences
Abstract
------------------------------------------------------------------Surface appearance is a critical characteristic of nearly all of today's commodity items and plays an important role in many other aspects of our lives. While internationally accepted standards have been defined for the measurement of colour and instruments are available for the measurement of surface gloss, there are no accepted ways of measuring the complex phenomenon we know as 'texture'.A small number of studies have sought to develop perceptually meaningful methods for measuring texture. However, we believe that these experiments were significantly flawed by the use of incomplete stimuli and uncontrolled conditions (they employed still photographs of surfaces imaged under unknown illumination conditions). Our proposal differs fundamentally from previous work because: a) we will compute texture measures directly from surface descriptions rather than from images / thereby removing the significant biasing effects illumination, and b) we will use graphics shader technologies to provide real-time photorealistic visualisations of real surface textures / this will provide both rich stimuli for the observers and full control over the psychophysical experiments.We believe that this work is of international significance because it tackles the important scientific problem of providing repeatable methods for obtaining perceptually meaningful measures of texture, and that with the collaboration of NPL and CIE it will establish the basis for national and international standards for texture measurement.
Publications
A Reynolds
(2010)
Multiobjective Feature Selection with Very Many Objectives
Clarke AD
(2009)
Modeling visual search on a rough surface.
in Journal of vision
Clarke AD
(2008)
Visual search for a target against a 1/f(beta) continuous textured background.
in Vision research
Clarke AD
(2016)
Human search for a target on a textured background is consistent with a stochastic model.
in Journal of vision
Emrith K
(2010)
Measuring perceived differences in surface texture due to changes in higher order statistics
in Journal of the Optical Society of America A
Padilla S
(2008)
Perceived roughness of 1/f(beta) noise surfaces.
in Vision research
Qi L
(2015)
The joint effect of mesoscale and microscale roughness on perceived gloss.
in Vision research
Reynolds A
(2010)
Parallel Problem Solving from Nature, PPSN XI
S Padilla
(2006)
Measurement of perceptual roughness in fractal surfaces
Description | National Physical Laboratory |
Organisation | National Physical Laboratory |
Country | United Kingdom |
Sector | Academic/University |
Start Year | 2006 |