With the multi-core technology be widely used in PCs, multithreading method becomes the most efficient programming tool for improving the computation capacity on a single processor. Especially in image processing, most numerical approaches are based on the computing over the pixel matrices. As the image size increases, more time consuming is needed. In this paper, a parallel method to perform the PDE-based image registration computing is discussed, the multithreading process with OpenMP on a dual core computer is detailed. Some experimental results show that this method can produce the large size parallel image registration and save nearly a half computing time.
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