嵌入式环境下导航地图数据表示和并行调度显示算法

¹ 西安交通大学电信学院,西安市咸宁路28号,710049;² 信息工程大学测绘学院,郑州市陇海中路66号,450052;³ 西安测绘研究所,西安市雁塔路中段1号,710054

基金项目: 国家863计划资助项目(2004AA111110)

详细信息

Map Data Denotation and Parallel Display Algorithm in Embedded Navigator

¹ Xi'an Jiaotong University,28 Xianning Road,Xi'an 710049,China ;² Institute of Surveying and Mapping,Information Engineering University,66 Middle Longhai Road,Zhengzhou 450052,China ;³ Xi'an Research Institute of Surveying and Mapping,1 Middle Yanta Road,Xi'an 710054,China

Funds: 国家863计划资助项目(2004AA111110)

摘要: 构造了满足导航要求的地图数据表示多维要素集NDIS_SET,针对嵌入式环境下计算、存储等资源有限的情况,提出了地图数据并行调度显示算法N_PDIS(navigation data parallel display),该算法根据地图显示操作进行模糊图幅预判,并通过动态图幅调度生成两块位图,实时将其中的一块切换至屏幕,算法通过两个并行线程完成。实验结果表明,N_PDIS在显示速度和平滑性方面有明显的优势。
- 嵌入式 /
- 地图显示 /
- 并行调度 /
- 车载导航
Abstract: After designing a navigation display data set(NDIS_SET)including several dimensions,a new parallel display algorithm with navigation data named N_PDIS is presented to adapt to embedded computation and memory limited resources.N_PDIS can choose one from two preparative bitmaps and switch to screen automatically through two parallel threads.After compared with normal navigation data display algorithm named NDIS,N_PDIS is shown more effective to improve display efficiency
- embedded system /
- map denotation /
- parallel display /
- vehicle navigation