% This Function script is used to extract TRP feature (used to compare) and SP-FD feature
% The related papers:
%  Y. Tang, H. Cheng and C. Suen. â€œTransformation-Ring-Projection(TRP) algorithm and its VLSI implementation,â€ % International Journal of Pattern Recognition and Artificial Intelligence, vol. 5, pp. 25-56, 1991.
%  L. Dong, J. Wang, Y. Li, Y. Tang. "Sector Projection Fourier Descriptor for Chinese Character Recognition"
% IEEE International Conference on Cybernetics, to be appear, 2013.
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