Visual information over a network by filtering a full resolution image signal to produce a series of sub-bands, wherein at least one of the sub-bands constitutes a base sub-band representing an image of reduced resolution and wherein additional sub-bands carry higher resolution information. The preferred embodiment tracks which people are in which segment at each time period, then builds a file that gives, by person, a description of which segment each person belonged to during each time period. Mechanisms are also provided that allow transferring of fragments of content for an XML document within a SOAP message.