1. A method for streaming a vector image to a client computer, comprising: accessing a pre-processed vector image including a plurality of local rectangular regions and a plurality of local vector objects, each local vector object being associated with one of the local rectangular regions, and each local vector object having associated therewith a range of display resolutions, each range being a set of one or more display resolutions between a respective first resolution and a respective last resolution, the ranges not all comprising the same number of display resolutions; receiving a request from a client computer for a desired portion of the vector image, for display at a desired display resolution; identifying at least one local rectangular region from among the plurality of local rectangular regions of the pre-processed vector image, which is appropriate for generating the desired portion of the vector image; and transmitting to the client computer those of the local vector objects associated with the identified at least one local rectangular region whose ranges of display resolutions include the desired display resolution.