Patent ID: 7236637
Filing Date: 2007-06-26
Classification: G06T,H03M,H04N

Abstract:
1. A method for selectively transferring image data, the method comprising: selecting an image resolution suitable for display in a desired viewport from a plurality of different image resolutions, wherein the image resolution corresponds to one set of a plurality of data sets decomposed from an image by lossless wavelet decomposition, and wherein the image resolution is determined via an iterative process that comprises determining whether scaling of one of the different image resolutions of the plurality of different image resolutions by a predetermined scaling threshold would result in a scaled image resolution that is less than or equal to the resolution of the desired viewport; and selectively requesting a portion of the plurality of data sets for recomposition of the image at the image resolution, the portion of the plurality of data sets being smaller than the plurality of data sets, wherein selectively requesting the portion comprises requesting a data stream comprising the plurality of data sets arranged sequentially in a desired order based upon the lossless wavelet decomposition, wherein the data sets form part of an image data file that is losslessly wavelet decomposed and that is stored in a losslessly compressed form on a server independent of any request from a client for data of the data sets.