Flexible Embedded Image Communication using Levels of Detail and Regions of Interest

In this paper, we introduce a formal model which describes consistently levels of detail and regions of interest for the embedded coding and progressive transmission of raster images. This model serves as the foundation of an image communication system which supports the progressive, redundancy-free transmission of multiple, possibly overlapping regions of interest in an image. We propose the rectangular fish eye view, a focus and context display technique for raster images which efficiently uses this transmission method and saves screen real-estate. To further decrease the data transmission requirements of the display technique, we propose a new wavelet decomposition scheme which allows the resolutions in x and y direction to differ by a power of two, and discuss the implications.