Navigation Map Data Representation and Parallel Display Algorithm in an Embedded Environment

被引：0

作者：

Zhang Dong ^{[1
]}

Wang Ling ^{[1
]}

Hui Hongchao ^{[1
]}

Li Heyuan ^{[1
]}

机构：

[1] Xian Res Inst Surveying & Mapping, 1 Middle Yanta Rd, Xian 710054, Shaanxi, Peoples R China

来源：

GEO-SPATIAL INFORMATION SCIENCE | 2008年 / 11卷 / 01期

关键词：

embedded system; map representation; parallel display; vehicle navigation;

D O I：

10.1007/s11806-007-0154-5

中图分类号：

TP7 [遥感技术];

学科分类号：

081102 ; 0816 ; 081602 ; 083002 ; 1404 ;

摘要：

Map data display is the basic information representation mode under embedded real-time navigation. After a navigation display data set (NDIS_SET) with several dimensions and corresponding mathematical description formula are designed, a series of rules and algorithms are advanced to optimize embedded navigation data and promote data index and input efficiency. A new parallel display algorithm with navigation data named N_PDIS is then presented to adapt to limited embedded resources of computation and memory after a normal navigation data display algorithm named NDIS and related problems are analyzed. N_PDIS can synchronously create two preparative bitmaps by two parallel threads and switch one of them to screen automatically. Compared with NDIS, the results show that N_PDIS is more effective in improving display efficiency.

引用

页码：62 / 65

页数：4

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