README.TXT
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Name: TESTIMAGES
Version: 1.0.000
Release date: 2011-04-03
Author:	Nicola Asuni

Copyright (c) 2011:
	Nicola Asuni
	Tecnick.com s.r.l.
	Via Della Pace, 11
	09044 Quartucciu (CA)
	ITALY
	www.tecnick.com
	info@tecnick.com

URLs:
	http://testimages.tecnick.com
	http://testimages.sf.net

Description:

	This is an archive of images for scientific testing purposes.

	Images are divided in 3 main folders:

		* ART: Artificial 8bit grayscale images.
		* GRAY: Natural 8bit grayscale images.
		* RGB: natural 3x8bit (Red, Green, Blue) color images.

	Each main folder contains:

		* 1 subfolder for original images (..._OR_1200x1200)
			The size of the original images is 1200 x 1200 pixels.
		* 8 subfolders for various reduction factors (R = 2, 3, 4, 5, 6, 8, 10, 12)
			The folder name indicate the reduction factor and the size of the images.

	Reduction algorithm:
		The size of images has been reduced by averaging the values of RxR sub-arrays (where R is the reducing factor).
		For example, if the reduction factor is 3: X=(A+B+C+D+E+F+G+H+I)/9

			+---+---+---+
			| A | B | C |
			+---+---+---+       +---+
			| D | E | F |  ==>  | X |
			+---+---+---+       +---+
			| G | H | I |
			+---+---+---+

License:
	Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported
	(CC BY-NC-SA 3.0)
	HUMAN-READABLE SUMMARY:
		http://creativecommons.org/licenses/by-nc-sa/3.0/
	LEGAL CODE (THE FULL LICENSE):
		http://creativecommons.org/licenses/by-nc-sa/3.0/legalcode
	See LICENSE.TXT file for more information.

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