Spatial data block organization storage and simplification compression method based on document model

A technology of spatial data and block organization, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of discrete organization, inability to compress, etc., to improve efficiency, reduce compression ratio, efficiently read and The effect of transmission

Inactive Publication Date: 2018-10-09
苏州舆图数据科技有限公司
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Problems solved by technology

[0008] The technical problem to be solved in the present invention is: based on the document storage model, overcoming the shortcomings of discrete organization and incompressibility in the prior art, and proposing a method for block organization storage and simplification and compression of vector space data oriented to document databases, Designed to achieve efficient access to large-scale vector data

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  • Spatial data block organization storage and simplification compression method based on document model
  • Spatial data block organization storage and simplification compression method based on document model
  • Spatial data block organization storage and simplification compression method based on document model

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Embodiment Construction

[0060] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0061] In describing the present invention, it should be understood that if there are terms "center", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer ” and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orie...

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Abstract

The invention discloses a spatial data block organization storage and simplification compression method based on a document model, which designs a large-scale spatial data organization, compression and storage scheme aiming at a document database, all objects in the index leaf nodes are mapped into the same document through a nested mode based on a non-relational document storage model, so that the physical continuous storage of the space adjacent objects in the nodes is realized, namely the block organization storage. An integrated storage of attribute data and geometric data is realized inside the nested document, and the direct mutual search of the space and the attribute is supported. By using the block as the simplification compressing unit of the element geometric data, taking the center coordinate of the node as the reference point, using the data storage precision as the control parameter, the whole coding, simplifying and compression of the internal object of the unit is realized. The organization storage mode reduces the compression ratio of the spatial data, reduces the I/O jump at the time of large-scale spatial data access, ensures the continuity of I/O, and realizes the efficient access of large-scale spatial data.

Description

technical field [0001] The invention relates to the fields of spatial databases and spatial data organization and storage, in particular to a document model-based spatial data block organization storage and simplification and compression method. Background technique [0002] Spatial data is the digital representation of geographic objects or phenomena and their relationships in geographic space, with typical spatial positioning and unstructured features. The organizational storage of spatial data is the basis for query, analysis, visualization and sharing. At present, the database has become the main place for spatial data storage, and the rapid development of database technology provides support for the storage of spatial data. Spatial data model is the description and expression of geographic objects and their interrelationships. As a bridge for geographic objects to be mapped to databases in the form of spatial data, it provides a basis for spatial database design. Acco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
Inventor 崔登吉
Owner 苏州舆图数据科技有限公司
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