Terrain data conversion method, device, electronic device and storage medium

By converting the elevation values ​​of raster terrain data into pseudo-elevation values ​​and then into red, green, and blue band values, and saving them as image formats, the problem of large terrain data file size is solved, achieving lossless data compression and improved transmission efficiency.

CN114238471BActive Publication Date: 2025-02-28GUANGZHOU XAIRCRAFT TECH CO LTD
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Patent Information

Application Number
CN202111505311.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2021-12-10
Publication Date
2025-02-28
Estimated Expiration
2041-12-10

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Abstract

The embodiment of the present invention proposes a terrain data conversion method, device, electronic device and storage medium, which relate to the field of surveying and mapping. The method converts the elevation value into a pseudo-elevation value whose unit is millimeter and is a positive integer by reading the elevation value in the raster terrain data, and converts the pseudo-elevation value into the value of the three bands of red, green and blue according to the preset corresponding relationship, and then saves the raster terrain data into data in a picture format according to the value of the three bands of red, green and blue. In this way, the raster terrain data is converted into data in a picture format with millimeter-level accuracy, and the raster terrain data can be losslessly compressed by using the lossless compression technology of the picture format, thereby effectively reducing the file size of the raster terrain data, reducing the storage cost of the data, and improving the data transmission efficiency.
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Citation Information

Patent Citations

  • Map data system as well as generation and use method and application thereof

    CN108225342A

  • Image processing method, image processing apparatus and electronic device

    CN108282643A