TY - JOUR

T1 - A test of stationarity for textured images

AU - Taylor, Sarah

AU - Eckley, Idris

AU - Nunes, Matthew

PY - 2014

Y1 - 2014

N2 - This article proposes a test of stationarity for random fields on a regular lattice motivated by a problem arising from texture analysis. Our approach is founded on the locally stationary two-dimensional wavelet (LS2W) process model for lattice processes which has previously been used for standard texture analysis tasks such as texture discrimination and classification. We propose two variants of our stationarity test, both of which can be performed on a single realisation – a feature of particular practical importance within texture analysis. We illustrate our approach with pilled fabric data, demonstrating that the test is capable of identifying visually-subtle changes in stationarity. Supplementary material for this article is available online.

AB - This article proposes a test of stationarity for random fields on a regular lattice motivated by a problem arising from texture analysis. Our approach is founded on the locally stationary two-dimensional wavelet (LS2W) process model for lattice processes which has previously been used for standard texture analysis tasks such as texture discrimination and classification. We propose two variants of our stationarity test, both of which can be performed on a single realisation – a feature of particular practical importance within texture analysis. We illustrate our approach with pilled fabric data, demonstrating that the test is capable of identifying visually-subtle changes in stationarity. Supplementary material for this article is available online.

KW - bootstrapping

KW - fabric analysis

KW - lattice processes

KW - non-stationarity

KW - random field

U2 - 10.1080/00401706.2013.823890

DO - 10.1080/00401706.2013.823890

M3 - Journal article

VL - 56

SP - 291

EP - 301

JO - Technometrics

JF - Technometrics

SN - 0040-1706

IS - 3

ER -