【摘要】 针对嵌入式终端设备资源有限与日益增长的海量影像数据显示之间的矛盾,提出并实现了一种适用于嵌入式设备的影像快速渲染方案.首先,研究了多分辨率瓦片金字塔构建改进算法,用以实现海量影像数据的组织管理.然后,在此基础上利用视点相关层次细节技术、目标瓦片快速搜索技术和瓦片无缝拼接技术实现影像的快速调度和显示.实验结果表明,和基于小波技术的多尺度影像显示方案对比,尽管所提方案需要增加数据存储空间,但可提供更快的显示速度,且图像显示速度和图像大小无关.此外,所提方案可实现交互的实时性和友好性,并提供更高效的用户体验,因此适用于嵌入式设备.更多还原

【Abstract】 In order to resolve the conflict between the limited resources of embedded devices and the growing amount of massive image data to be shown,a solution for fast images rendering in embedded devices is proposed and implemented.First,an improved algorithm of a multi-resolution tile-pyramid construction which is used for the organization of massive image data is presented.Then,a strategy,adopting technologies such as view-dependent levels of detail,target-tiles quick search and tiles seamless connection,is presented for fast scheduling and viewing of images.The results show that compared with the solution of multi-scale image representations based on wavelet,the proposed solution can improve the rendering speed,and the rendering speed does not depend on the image size,though it increases some data storage space.And the proposed solution is suitable for embedded devices because it can provide real-time and friendly interaction as well as more efficient user experience.更多还原