Image template matching on hypercube SIMD computers (Q804329)

We present a parallel algorithm to perform an image template matching (PITM) on SIMD hypercube computers with non-shared local memory. This parallel algorithm is general in the sense that it allows for arbitrary dimensions for the image, the template and the hypercube. The flexibility of the PITM algorithm is rooted in the partition of the dimensions of the hypercube into four subsets, each one associated with one independent loop of the sequential algorithm (template matching in the domain of the time), and in the way the data are distributed in the local memories of the processing elements (consecutive storage for the template and for the matrix of cross-correlation coefficients, and shifted-consecutive for the image). Both the algorithmic complexity and the data redundancy are analyzed.