%A ZHOU Yi-hua, WANG Wen-dong, CHEN Hong-cai, WANG Ting and ZHANG Chang-you %T Research on Parallel Algorithm of Vehicle Image Interested Region Based on Pthreads %0 Journal Article %D 2017 %J Computer Science %R 10.11896/j.issn.1002-137X.2017.03.009 %P 36-37 %V 44 %N 3 %U {https://www.jsjkx.com/CN/abstract/article_922.shtml} %8 2018-11-13 %X In order to improve the efficiency of searching criminal vehicles for the public security bureau,improving the efficiency of vehicle identification is very necessary.According to statistics,extraction of region interest area (ROI) is about 60% of the entire vehicle identification process.How to speed up the phase of extracting ROI is especially important.First,the basic parallel algorithm was realized by data partitioning method.Then,through the experimental analysis,the pre-processing decomposition scheme was carefully designed based on basic parallel algorithm.In our scheme,we set up a multi-queue buffer,reducing the number of threads sharing a cache and the times of lock each cache.Experiments show that the algorithm running on server with dual CPU12 core (support for hyper threading to 24 threads) achieved 13.1x speedup ratio compared with the serial algorithm.