Parallel algorithms for image template matching on hypercube SIMD computers

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Fang, Zhixi
Li, Xiaobo
Ni, Lionel M.

Fang, Zhixi; Li, Xiaobo; Ni, Lionel M.; , "Parallel Algorithms for Image Template Matching on Hypercube SIMD Computers," Pattern Analysis and Machine Intelligence, IEEE Transactions on , vol.PAMI-9, no.6, pp.835-841, Nov. 1987 doi: 10.1109/TPAMI.1987.4767990


This correspondence presents several parallel algorithms for image template matching on an SIMD array processor with a hypercube interconnection network. For an N by N image and an M by M window, the time complexity is reduced from O(N2M2) for the serial algorithm to O(M2/K2 + M * log2 NIK + log2 N * log2 K) for the N2K2-PE system (1 s K . M), or to O(N2M2/L2) for the L2-PE system (L < N). With efficient use of the inter-PE communication network, each PE requires only a small local memory, many unnecessary data transmissions are eliminated, and the time complexity is greatly reduced.

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