Novel organization method of single-scene image tile data
A tile and image technology, which is applied in the field of massive remote sensing image visualization, can solve the problem of time-consuming tile data, achieve the effect of improving reading performance, improving retrieval and reading speed, and reducing storage space
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[0027] figure 1 It shows the organization and reading process of the tile data of a single scene image. It mainly includes three parts: (1) multi-level division of single scene image, (2) quadtree organization of tile data, (3) fast reading of tile data.
[0028] figure 2 It is a schematic diagram of the division of the geographic range of the image by the global geographic reference grid. The global geographic reference grid can adopt the latitude and longitude grid and the Web Mercator grid. The present invention takes the latitude and longitude grid as an example to specifically introduce the implementation process. The standard longitude-latitude grid divides the global geographical range (longitude [-180~180], latitude [90~-90]) with 256*256 square tiles, forming a 0-layer grid with 4 blocks in the longitude direction and 2 blocks in the latitudinal direction. In this division method, 8 tile root nodes are generated at layer 0; in theory, a sufficiently large image wi...
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