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Fast Algorithm for Walsh Hadamard Transform on Sliding Windows

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2 Author(s)
Wanli Ouyang ; Dept. of Electron. Eng., Chinese Univ. of Hong Kong, Hong Kong, China ; Wai-Kuen Cham

This paper proposes a fast algorithm for Walsh Hadamard Transform on sliding windows which can be used to implement pattern matching most efficiently. The computational requirement of the proposed algorithm is about 1.5 additions per projection vector per sample, which is the lowest among existing fast algorithms for Walsh Hadamard Transform on sliding windows.

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Pattern Analysis and Machine Intelligence, IEEE Transactions on  (Volume:32 ,  Issue: 1 )