期刊
EXPERT SYSTEMS WITH APPLICATIONS
卷 40, 期 5, 页码 1636-1644出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.eswa.2012.09.007
关键词
Colour descriptors; Grading; Parquet; Sorting; Wood
类别
资金
- Spanish Government [TRA2011-29454-C03-01, CTM2010-16573]
- European Union [Life09-ENV/FI/000568]
In this paper we consider the problem of colour-based sorting hardwood parquet slabs into lots of similar visual appearance. As a basis for the development of an expert system to perform this task, we experimentally investigate and compare the performance of various colour descriptors (i.e.: soft descriptors, percentiles, marginal histograms and 3D histogram), and colour spaces (i.e.: RGB, HSV and CIE Lab). The results show that simple and compact colour descriptors, such as the mean of each colour channel, are as accurate as more complicated features. Likewise, we found no statistically significant difference in the accuracy attainable through the colour spaces considered in the paper. Our experiments also show that most methods are fast enough for real-time processing. The results suggest the use of simple statistical descriptors along with RGB data as the best practice to approach the problem. (C) 2012 Elsevier Ltd. All rights reserved.
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