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arXiv 1603.09337cs.DC
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共享内存并行机上的实时的拓扑图像平滑

Real-time topological image smoothing on shared memory parallel machines

Ramzi Mahmoudi, Mohamed Akil

摘要:

平滑滤波是图像预处理和模式识别的首选方法。本文提出了一种新的二值情况下二维物体的并行光顺方法。所提出的方法提供了一个并行计算,同时通过使用同伦变换保持拓扑结构。我们引入了一个适应的并行化策略,称为分裂,分布和合并(SDM)的策略,它允许有效的并行化的一大类拓扑算子,主要包括,平滑,tenonization,分水岭算法。为了实现良好的加速比,我们关心任务调度。平滑过程中的分布式工作由可变数量的线程完成。使用具有8个CPU核心(2个Xeon E5405以2GHz的频率运行)的共享内存并行机(SMPM)对2D二值图像(512*512)进行测试,显示出5.2的增强,从而实现每秒32幅图像的节奏。

英文摘要:

Smoothing filter is the method of choice for image preprocessing and pattern recognition. We present a new concurrent method for smoothing 2D object in binary case. Proposed method provides a parallel computation while preserving the topology by using homotopic transformations. We introduce an adapted parallelization strategy called split, distribute and merge (SDM) strategy which allows efficient parallelization of a large class of topological operators including, mainly, smoothing, skeletonization, and watershed algorithms. To achieve a good speedup, we cared about task scheduling. Distributed work during smoothing process is done by a variable number of threads. Tests on 2D binary image (512*512), using shared memory parallel machine (SMPM) with 8 CPU cores (2 Xeon E5405 running at frequency of 2 GHz), showed an enhancement of 5.2 thus a cadency of 32 images per second is achieved.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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