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. Author manuscript; available in PMC: 2009 Dec 2.
Published in final edited form as: Int J Artif Intell Tools. 2009 Jun 1;18(3):379–397. doi: 10.1142/S0218213009000196

Fig. 1.

Fig. 1

(color online) (a), (b): Our color marker seen at a distance of 1 meter and of 6 meters respectively. The figures shows a 121 × 121 pixel subimage cropped from the original 640 × 480 pixel image. Superimposed are the locations of the 4 pixels of a “probe” placed at the center of the marker's image. Note the probe's size is the same for the two images, and that correct detection is attained in both cases. (c): The color marker region is segmented (shown in yellow) after detection.