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Issue No.12 - December (2005 vol.27)
pp: 1996-2002
Legendre moments are continuous moments, hence, when applied to discrete-space images, numerical approximation is involved and error occurs. This paper proposes a method to compute the exact values of the moments by mathematically integrating the Legendre polynomials over the corresponding intervals of the image pixels. Experimental results show that the values obtained match those calculated theoretically, and the image reconstructed from these moments have lower error than that of the conventional methods for the same order. Although the same set of exact Legendre moments can be obtained indirectly from the set of geometric moments, the computation time taken is much longer than the proposed method.
Index Terms- Moments, feature representation.
Pew-Thian Yap, Raveendran Paramesran, "An Efficient Method for the Computation of Legendre Moments", IEEE Transactions on Pattern Analysis & Machine Intelligence, vol.27, no. 12, pp. 1996-2002, December 2005, doi:10.1109/TPAMI.2005.232
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