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

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.