Multi-resolution Digital Map Of The Research Technology

It is necessary that the geographical information in the world is represented and visualized by the way of multi-resolutions, because the distributions of geographical entities in the world are non-uniform. An application of the research system within the region as long as the different parts of the geographic information requirements of different spatial resolution, it will inevitably need to build multi-resolution digital map. In going deep into analyzing and researching the concepts and features, such as digital maps, electronic maps, scales, resolution, etc, in this thesis the concept of the multi-resolution digital maps is put forward, and furthermore, the specific methodology and the techniques to construct the multi-resolution digital/electronic maps are studied as follows:â‘ In general on the electronic map display method on the basis of a multi-resolution digital map display technology, is hierarchical classification and display technologies, and multi-resolution digital map of the symbol design. Multi-resolution electronic map symbols designed primarily through pictorial symbols, size and color of uniform design will be different resolution mapping of regional integration, while at the same time meet the multi-resolution electronic map display requirements.â‘¡Multi-resolution digital map of the preparation method has been discussed in detail and verification. In the analysis of the mapping information is presented based on the preparation of multi-resolution digital map of the main issues focus on resolving the idea of the preparation of multi-resolution electronic map processes and methods.â‘¢Multi-resolution digital map of the method of preparing a detailed explanation. In the resolution of different electronic maps to the stitching, will be encountered across two different entities linear mapping of the region splicing problem. In this paper, the fourth part of the region straddles two different mapping the linear entities (rail, roads, internal roads, rural roads, cul-de-sac, pipeline survey, ditch, reservoirs, single features) described in detail about stitching issues .