Organization and schedule of multi-resolution pyramid based on wavelet transform

Longgang Xiang, Xinyan Zhu
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引用次数: 1

Abstract

The technology of multi-resolution pyramid is widely used in raster data (image and DEM) processing. However, the main weakness of such implementation is that redundant store exists among different resolution levels. To overcome this problem, we propose a novel organization for multi-resolution pyramid, called wavelet pyramid, which combines the strength of pyramid structure and wavelet transform. To integrate wavelet pyramid into Geoglobe (a Google Earth like system), we build the relationship between wavelet subbands and Geoglobe tiles. We also discuss the network transmission of wavelet pyramid in Geoglobe, and propose an incremental and progressive schedule method. Compared to tile pyramid, wavelet pyramid occupies less storage size, and its network schedule is more effective.
基于小波变换的多分辨率金字塔的组织与调度
多分辨率金字塔技术广泛应用于栅格数据(图像和DEM)处理。然而,这种实现的主要缺点是在不同的分辨率级别之间存在冗余存储。为了克服这一问题,我们提出了一种新的多分辨率金字塔结构,称为小波金字塔,它结合了金字塔结构和小波变换的优点。为了将小波金字塔整合到Geoglobe(一个谷歌类地球系统)中,我们建立了小波子带与Geoglobe块之间的关系。讨论了小波金字塔在Geoglobe中的网络传输,提出了一种增量递进调度方法。与瓦片金字塔相比,小波金字塔占用的存储空间更小,其网络调度更有效。
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