Reference

Ion, A., Haxhimusa, Y., Kropatsch, W., & Lopez, S. (2008). A Coordinate System for Articulated 2D Shape Point Correspondences. In The 19th International Conference on Pattern recognition. The 19th International Conference on Image Processing (ICPR08), Tampa, Florida, Non-EU. IEEE Computer Society. http://hdl.handle.net/20.500.12708/52448