基于多核DSP的激光点云解算算法并行设计

The parallel processing design of LiDAR point cloud calculation based on multicore DSP

快速、实时地进行点云解算以及获取三维坐标信息是当前遥感应用的发展趋势。针对机载激光雷达点云计算量大、处理算法复杂等特点,设计了基于TMS320C6678多核DSP的并行、高效激光点云处理方法。首先,简要介绍了点云解算的算法原理和特点;其次,具体说明了基于TMS320C6678多核DSP的并行点云解算架构设计;最后,利用机载激光雷达系统获取的数据对设计的多核DSP并行处理架构进行了验证,并比较分析了同平台下单核和多核处理器的运行效率。

Currently, the research on performing real-time points position cloud calculation method, which is aimed to obtain high precision surface models, is a trend of remote sensing technology. According to the features that airborne LiDAR point cloud calcu- lation contains a large amount of computation and complex processing algorithms, a muhi-core DSP parallel processing system is designed. This system, which is based on TMS320C6678, implements efficiently. Firstly, the principles and characteristics of the Li- DAR system are introduced briefly. Secondly, the architecture of this multi-core DSP parallel system is described in detail. Finally, the fight data, which is from an airborne LiDAR system experiment, has been used to prove the effectiveness of this parallel architecture. At the same time, the operational efficiency of single core and multi-core processor has been compared and analvzed.