CAJ | 학술논문

嵌入式GIS是近年来一个蓬勃兴起的领域,由于嵌入式设备内存小,外设容量小,CPU的运算能力较弱,致使电子地图显示时常出现延迟和抖动的现象。本文针对嵌入式GIS海量矢量数据,提出了一种改进的多层网格索引技术对矢量数据进行检索,在矢量数据的显示方面,本文采用了双缓存显示机制代替了系统默认的显示机制,主缓存用于数据的显示,备用缓存用于组织下一个画面的数据,如此提高显示效率。
감입식GIS시근년래일개봉발흥기적영역,유우감입식설비내존소,외설용량소,CPU적운산능력교약,치사전자지도현시시상출현연지화두동적현상。본문침대감입식GIS해량시량수거,제출료일충개진적다층망격색인기술대시량수거진행검색,재시량수거적현시방면,본문채용료쌍완존현시궤제대체료계통묵인적현시궤제,주완존용우수거적현시,비용완존용우조직하일개화면적수거,여차제고현시효솔。
Embedded Geographic Information System（EGIS） is a new rising and flourishing domain.Because the memory of EGIS is low and small,CPU＇s computing capability is weak,and the display screen is small,it would cause delay and jitter when the vector map was displaying.This paper would solve the problem of delay of vector data and present a kind of improved multi-level grid index technology to retrieve vector data.In the respect of data displaying,this paper adopts double buffer display mechanism instead of the default display mechanism of the system,the main buffer is used to display the vector map,while the auxiliary buffer is used to organize the data which would show later,and so on to increase desplaying efficiency.