A geographic information survey data management system and method using GIS technology

By preprocessing geographic information survey data and adjusting elevation data differences, combined with gradient fusion and physical constraint smoothing algorithms, the problem of terrain structure deviation in the splicing of time-series geographic survey information data was solved, and high-precision and efficient digital terrain 3D model construction was achieved.

CN120929548BActive Publication Date: 2026-07-21HUAIYIN TEACHERS COLLEGE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HUAIYIN TEACHERS COLLEGE
Filing Date
2025-07-08
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

In existing technologies for stitching together time-series geographic survey information, there are discrepancies between the terrain structure at the stitching point and the actual terrain structure, which affects the accuracy of the digital terrain 3D model.

Method used

By preprocessing multi-source information data collected by geographic information surveying equipment, a splicable time-series data structure and a transitional data structure are constructed. The elevation data difference is calculated, the relative positional relationship between the target time-series data structure and adjacent time-series data structures is adjusted, and smoothing is performed through a splicing transition model. The transition region is smoothed by combining gradient fusion and physical constraints.

Benefits of technology

It improves the global consistency and geometric accuracy of digital terrain 3D models, reduces the amount of computation, ensures smooth and natural elevation transitions at the stitching points, preserves the true structure and detailed features of the terrain to the greatest extent, and avoids excessive smoothing distortion.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a kind of geographic information survey data management system and method applied to GIS technology, it is related to geographic survey information management field, the multi-source information data of geographic information survey equipment collection is preprocessed, and the time series data structure and transition data structure that can be spliced are obtained;Elevation data at the splicing place of target time series data structure and adjacent time series data structure is obtained, and the relative position relationship between target time series data structure and adjacent time series data structure is adjusted using splicing transition model according to the elevation data difference;The width of transition region is determined based on the elevation data difference at the splicing place after adjustment, and the transition region is smoothed by splicing transition model;After smoothing, the transition region is spliced with time series data structure, and the smooth transition at the splicing place of target time series data structure and adjacent time series data structure is completed;Through transition data structure and its processing logic, the accuracy of spliced digital terrain three-dimensional model is guaranteed to the greatest extent.
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