基于多核DSP的图像实时相关匹配研究

Image Real-Time Correlation Matching based on Multi-Cores DSP

针对目标精确定位中图像实时匹配性能的瓶颈问题,提出了一种基于TMS320C6678多核DSP的图像实时相关匹配方法。该方法采用并行处理设计,将复杂耗时的互相关运算分解并平均分配到多个核中同时进行;采用算法优化设计,将优化的快速匹配算法与预处理、搜索策略控制等方法相结合,实现图像的快速匹配。实验结果表明,该方法在保证匹配准确性的同时,还能显著降低图像相关匹配的计算时间,满足实时处理要求。

Aiming at the bottleneck of image real-time performance matching in objective accurate positio- ning, an approach of image real-time correlation matching based on TMS320C6678 multi-cores DSP pro- cessor is proposed. The design of parallel processing is adopted in this appoach, thus to resolve the com- plicated and time-cosuming cross-correlation operation into several sections and equally assign them to multiple cores of DSP for simultaneous procesing. Meanwhile, the modified algorithm could speed up the image matching by combining fast optimized matching algorithm with pre-processing, searching strategy control etc. Experiment result shows that this algorithm could guarantee the matching accuracy while re- markably decrease the time of image correlation matching, so as to meet the demand of real-time process.