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Explicit Krawtchouk moment invariants for invariant image recognition

[+] Author Affiliations
Bin Xiao, Yanhong Zhang, Linping Li, Weisheng Li, Guoyin Wang

Chongqing University of Posts and Telecommunications, Chongqing Key Laboratory of Computational Intelligence, Chongqing 400065, China

J. Electron. Imaging. 25(2), 023002 (Mar 07, 2016). doi:10.1117/1.JEI.25.2.023002
History: Received December 10, 2015; Accepted February 16, 2016
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Abstract.  The existing Krawtchouk moment invariants are derived by a linear combination of geometric moment invariants. This indirect method cannot achieve perfect performance in rotation, scale, and translation (RST) invariant image recognition since the derivation of these invariants are not built on Krawtchouk polynomials. A direct method to derive RST invariants from Krawtchouk moments, named explicit Krawtchouk moment invariants, is proposed. The proposed method drives Krawtchouk moment invariants by algebraically eliminating the distorted (i.e., rotated, scaled, and translated) factor contained in the Krawtchouk moments of distorted image. Experimental results show that, compared with the indirect methods, the proposed approach can significantly improve the performance in terms of recognition accuracy and noise robustness.

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Citation

Bin Xiao ; Yanhong Zhang ; Linping Li ; Weisheng Li and Guoyin Wang
"Explicit Krawtchouk moment invariants for invariant image recognition", J. Electron. Imaging. 25(2), 023002 (Mar 07, 2016). ; http://dx.doi.org/10.1117/1.JEI.25.2.023002


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