Improvement of Color Recognition Using Colored Objects
Recognition of colored objects is important and practical for robot vision. This paper proposes a color recognition method which is robust to illumination change. A color space of Cb/Y and Cr/Y is introduced where Cb and Cr are color difference and Y is intensity of YCbCr color space. This color space is not affected by the change of the brightness of illumination. And a method to update clusters of color table is proposed. The method can cope with the change of the color of illumination. Experiments show that the proposed method can recognize color more robustly for illumination change. RoboCup four legged robot league is chosen as the research platform.
KeywordsColor Space Previous Method Mahalanobis Distance Illumination Change Colored Object
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- 1.Finlayson, G.D., Funt, B.V.: Color constancy under varying illumination. In: Proc. of IEEE Int. Conf. on Computer Visoin, pp. 720–725 (1995)Google Scholar
- 4.Mayer, G., Utz, H., Kraetzchmar, G.: Towards Autonomous Vision Self-Calibration for Soccer Robot. In: IEEE/RSJ Int. Conf. on Intelligent Robots and Systems (IROS 2002), pp. 214–219 (2002)Google Scholar
- 5.Hanek, R., Schmitt, T., Buck, S., Beetz, M.: Fast Image-based Object Localization in Natural Scenes. In: IEEE/RSJ Int. Conf. on Intelligent Robots and Systems (IROS 2002), pp. 116–122 (2002)Google Scholar
- 7.Faugeras, O.: Three-Dimensional Computer Vision. MIT Press, Cambridge (1993)Google Scholar