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Data storage method, data memory, computer readable storage medium and data reading method

A technology of data storage and storage medium, applied in the fields of computer-readable storage medium, data reading, data storage method, and data storage device, can solve the problems of high data storage cost and high data generation cost, and improve production efficiency and quality , The effect of reducing data connection workload and production cost

Active Publication Date: 2021-09-21
自然资源部第三地形测量队
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to provide a data storage method, a data storage device, a computer-readable storage medium and a data reading method, so as to solve the problem of high data generation cost and high data storage cost caused by the data storage methods of DSM model and DEM model in the prior art technical issues

Method used

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  • Data storage method, data memory, computer readable storage medium and data reading method
  • Data storage method, data memory, computer readable storage medium and data reading method
  • Data storage method, data memory, computer readable storage medium and data reading method

Examples

Experimental program
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Embodiment 1

[0039] A data storage method, see Figure 1 to Figure 3 .

[0040] Such as figure 1 As shown, the data storage method establishes a DMM data table, the DMM data table includes a row address and a column address, the row address represents the abscissa i of the surveying and mapping area, the column address represents the ordinate j of the surveying and mapping area, and the row address in the DMM data table is i , the DMM value of the position where the column address is j is d ij , for example, d 00 Indicates the DMM value of the surveying point whose abscissa is 0 and ordinate is 0 in the surveying area.

[0041] The DMM value here is used to represent the corresponding value of DSM model data or DEM model data, in this embodiment:

[0042] When the corresponding surface position of the surveying area is covered by no obstacles, the DEM value of the position e ij and DSM value s ij Same, here the DEM value e ij is the corresponding value in the DEM model data (digital...

Embodiment 2

[0051] A data storage method for storing DSM model data and DEM model data of a surveying area in a computer-readable storage medium.

[0052] In this embodiment, the computer-readable storage medium includes a storage unit arranged in a grid pattern, and the DMM data in the DMM table in Embodiment 1 is stored in the storage unit, and the DMM data is used to store the surveyed area at the same time DSM model data and DEM model data.

[0053] In this embodiment, the storage unit includes a row address and a column address, the row address represents the abscissa i of the surveying and mapping area, and the column address represents the ordinate j of the surveying and mapping area; the DMM value of the position where the row address is i and the column address is j in the storage unit for d ij .

[0054] When the corresponding surface position of the surveying area is covered by no obstacles, the DEM value of the position e ij and DSM value s ij Same, DEM value e ij is the ...

Embodiment 3

[0058] A data storage method, for storing the DSM model data and the DEM model data of the surveying and mapping area in a computer-readable storage medium, the difference from Embodiment 2 is:

[0059] In the data storage method of this embodiment, when the corresponding surface position of the surveying area is covered by no obstacles, the DMM value d in the storage unit ij is the DSM value s of the position ij +Identifier 1; and when the corresponding surface position of the surveying area is covered by obstacles, the DMM value d in the storage unit ij is the DSM value s of the position ij +Identifier 2, and store the DEM value e of the corresponding position in order at the end of the i-th row of the storage unit ij .

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Abstract

The invention belongs to the technical field of surveying and mapping data storage, and particularly relates to a data storage method, data memory, a computer readable storage medium and a data reading method.The data storage method is based on the characteristics of DSM model data and DEM model data. Different values in DSM model data and DEM model data of a surveying and mapping region are sequentially stored at the ends of corresponding rows, so that two data files of the same surveying and mapping region can be integrated into one data file, and the DSM model data and the DEM model data of the surveying and mapping region can be stored at the same time in one storage mode. According to the data storage method, the data storage cost can be effectively reduced, and the data storage method omits the comparison work of DEM data and DSM data and reduces the data edge matching workload, so that the production cost of the surveying and mapping data is reduced, and the production efficiency and quality of the surveying and mapping data are improved; and the data memory and the computer readable storage medium can store more DSM model data and DEM model data.

Description

technical field [0001] The invention belongs to the technical field of surveying and mapping data storage, and in particular relates to a data storage method, a data storage device, a computer-readable storage medium and a data reading method. Background technique [0002] In geographic mapping, DSM refers to the digital surface model (Digital Surface Model), and DEM refers to the digital elevation model (Digital Elevation Model). The digital elevation model (DEM) is a digital simulation of ground terrain through limited terrain elevation data. Therefore, compared with DEM, DEM only includes terrain (excluding buildings, bridges, trees, etc., The elevation of the corresponding position of DEM uses the elevation information of the ground) and does not include other surface information. DSM is based on DEM, and further covers the elevation of other surface information except the ground. [0003] At present, the DSM model and DEM model of the same area are stored in two differ...

Claims

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Application Information

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IPC IPC(8): G06F16/901
CPCG06F16/901
Inventor 刘达曹鹏赵栋梁王宝山孙睿英陈曦张修玉范雨龙
Owner 自然资源部第三地形测量队
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