id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
work_cdulhhfax5dwrkjqrb6ys52gae	Francesco Bianconi	Performance analysis of colour descriptors for parquet sorting	2013	25	.pdf	application/pdf	8175	1022	68	In this paper we consider the problem of colour-based sorting hardwood Keywords: Grading, Parquet, Sorting, Colour descriptors, Wood involves two different and clearly separated problems: 1) detection, localization and classification of surface defects; and 2) sorting products into lots Table 1: Summary list of methods for colour-based wood sorting. graded batch of parquet hardwood into different colour tones, among which 'as is' or converted into different colour spaces, such as HSV, CIE Lab, etc. (2008) employed both device-dependent (HSV) and deviceindependent (CIE Lab) colour coordinates for sorting three different types In the following two subsections we review the colour descriptors (Sec. 4.1) and spaces (Sec. 4.2) considered in this paper. discuss the problem of converting colour data from a device-dependent space different colour spaces for image classification has in fact led, so far, to contradictory or inconclusive results. The comparative analysis showed no significant difference between the descriptors and colour spaces considered in the paper,	./cache/work_cdulhhfax5dwrkjqrb6ys52gae.pdf	./txt/work_cdulhhfax5dwrkjqrb6ys52gae.txt