Journal
TECHNOMETRICS
Volume 56, Issue 3, Pages 291-301Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/00401706.2013.823890
Keywords
Bootstrapping; Fabric analysis; Lattice processes; Nonstationarity; Random field
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Funding
- Unilever Research Ltd.
- EPSRC
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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 that 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 realization-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.
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