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Fast nearest neighbour searching algorithm using L1 norm

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3 Author(s)
Seongjoon Baek ; Dept. of Electr. Eng., Seoul Nat. Univ., South Korea ; SangKi Kang ; Koeng-Mo Sung

Simple but effective fast codebook searching algorithms for vector quantisation are presented. The Euclidean distance (L2 norm) calculation requires a number of multiplications. The proposed algorithms use the L1 norm between the input vector and codeword to discard many unlikely codewords. Since the proposed algorithms significantly reduce the number of multiplications, a considerable reduction in encoding time is achieved. Simulation results confirm the effectiveness of the proposed algorithms

Published in:

Electronics Letters  (Volume:35 ,  Issue: 24 )

Date of Publication:

25 Nov 1999

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