CN-121980507-A - Map data real-time fusion and visualization system for homeland space planning

CN121980507ACN 121980507 ACN121980507 ACN 121980507ACN-121980507-A

Abstract

The invention discloses a map data real-time fusion and visualization system for homeland space planning, in particular to the technical field of geographic information, which comprises a space-time reference unifying module, a stream topology fusion module, an increment three-dimensional model construction module and a multi-mode interaction visualization engine module, wherein the multi-source heterogeneous data are unified to a standard space-time reference through coordinate conversion and time stamp alignment, the elements in a planning partition are subjected to topology conflict detection and automatic adjustment based on a preset authority level mapping table, three-dimensional planning scene grid data which are precisely embedded with the topography are driven to be generated according to planning attribute codes, planning analysis, current situation comparison and scheme simulation views are integrated in the same interface, and attribute linkage inquiry and scheme real-time editing and rendering are supported. The method realizes the automatic fusion of multi-source data, the rapid construction of a three-dimensional scene and the visual interactive simulation of a planning scheme, and improves the accuracy and decision efficiency of land space planning.

Inventors

ZHANG PEIHUA
YANG JIAN

Assignees

东营市鹏程测绘有限责任公司

Dates

Publication Date: 20260505
Application Date: 20260123

Claims (8)

1. A map data real-time fusion and visualization system for homeland space planning, which is characterized by comprising: The space-time reference unifying module comprises a first data interface unit, a coordinate converter, a time stamp aligner, a time stamp storage unit and a time stamp storage unit, wherein the first data interface unit is connected with a satellite remote sensing image data stream, a homeland investigation vector data stream and a planning control line data stream; The flow topology fusion module is used for receiving the intermediate data flow in real time, carrying out space superposition analysis on linear and planar vector elements of the same planning partition, generating a topology inconsistent record, presetting an authority level mapping table, and automatically adjusting the geometric node coordinates of elements corresponding to low-level data sources when the topology inconsistent record is triggered to output a three-dimensional space entity set; The incremental three-dimensional model construction module is internally provided with a rule base, a body block generator and a terrain jogger, stores the mapping relation between planning attributes and three-dimensional visual parameters, calls the rule base according to the planning attribute codes of three-dimensional space entities, stretches planar entities into colored body blocks according to the mapping height, generates linear entities into a tubular model, performs geometric intersection and vertex fusion on the body blocks and the bottom surface contours of the tubular model and a triangular network of a digital elevation model, and outputs three-dimensional planning scene grid data; The multi-mode interactive visualization engine module is provided with a built-in view controller, an attribute linkage device and a scheme simulator, and is used for managing the layer superposition and the display and hidden switching of three types of views of planning analysis, current situation comparison and scheme simulation in the same display window, synchronously highlighting the selected models, displaying the related planning constraint and current situation attribute data set in a parallel panel, driving the incremental three-dimensional model construction module to reconstruct a designated area model according to a modification instruction, and rendering the result to the scheme simulation view in real time.
2. The map data real-time fusion and visualization system for homeland space planning of claim 1, wherein the first data interface unit comprises an adaptive protocol parser and a dynamic buffer scheduler, wherein the adaptive protocol parser is configured to access an image slice stream by using an HTTP/2 protocol for a satellite remote sensing image data stream and to automatically match pixel coding rules, compression coding rules and metadata coding rules for decoding, and to access incremental update data following an incremental package plus full baseline transmission mode by using a WebSocket long connection for a vector data stream; The dynamic cache scheduler is connected with the adaptive protocol parser and used for dynamically distributing decoded data to the distributed cache pool according to the data priority.
3. The map data real-time fusion and visualization system for homeland space planning of claim 1, wherein the coordinate converter adopts a partition self-adaptive conversion and error real-time correction strategy, wherein the partition self-adaptive conversion is based on a pre-built nationwide partition conversion model library, a seven-parameter conversion model or an affine conversion model is automatically matched for data streams of different areas, the error real-time correction is introduced into GNSS real-time dynamic monitoring control point data, real-time plane and elevation errors are checked in the conversion process, conversion parameters are automatically adjusted when the errors exceed a preset threshold value, and conversion logs comprising a source coordinate system, a target coordinate system, a conversion model type, conversion parameters and error values are recorded.
4. The map data real-time fusion and visualization system for homeland space planning of claim 1, wherein the timestamp aligner performs differential alignment operations on different aged data streams by aligning imaging times of satellite remote sensing image data to a daily level, homeland survey year change data to a final quarter, planning control line data to a planning base year, and real-time monitoring data to an hour level.
5. The map data real-time fusion and visualization system for homeland space planning of claim 1, wherein the streaming topology fusion module is constructed based on a streaming computing framework, the intermediate data stream is divided into a plurality of processing windows according to planning partitions for parallel topology analysis, a topology reconstruction unit is internally provided with a topology relation rule base, legal topology judgment standards and conflict topology judgment standards are defined in the rule base, and a dual detection mechanism of geometric node matching and attribute association verification is adopted to generate the topology inconsistency record.
6. The map data real-time fusion and visualization system for homeland space planning according to claim 1, wherein the authority level mapping table is constructed with a 'legal level-professional level-current level' three-level authority level system, wherein the legal level corresponds to homeland space planning legal result data and natural resource right-determining registration data, the professional level corresponds to each industry administration approval data, the current level corresponds to satellite remote sensing image interpretation data and homeland investigation annual change data, and the authority level mapping table supports dynamic adjustment of level weights through a management interface.
7. The map data real-time fusion and visualization system for homeland space planning of claim 1, wherein the rule base adopts tree structure combined condition matching to support double-layer configuration of basic rules and project custom rules, the block generator executes an attribute-driven dynamic stretching algorithm for planar entities, an axis-driven tubular modeling algorithm for linear entities, a hierarchical detail technology is introduced in the modeling process, model precision is dynamically adjusted according to model display distance, the terrain embedder executes three operations of geometric intersection, vertex fusion and texture embedment, and space intersection of bottom surface contours of the coloring blocks and the tubular models and a digital elevation model triangle net is calculated.
8. The map data real-time fusion and visualization system for homeland space planning of claim 1, wherein the solution simulator supports two modification modes of parameter modification and graphic editing, wherein parameter modification directly adjusts planning attribute parameters through a parallel panel of the attribute linkage, graphic editing adjusts geometric contours by dragging model vertexes in a view of the view controller, and the solution simulator saves solutions before and after modification as different versions and supports difference highlighting and index comparison statistics.

Description

Map data real-time fusion and visualization system for homeland space planning Technical Field The invention relates to the technical field of geographic information, in particular to a map data real-time fusion and visualization system for homeland space planning. Background With the deep advancement of the innovation of the homeland space planning system, the planning and management of the integration precision, the processing efficiency and the intuitiveness of decision support of the multi-source heterogeneous map data are provided with higher requirements. At present, the closest prior art scheme to the scheme is a land space planning auxiliary system based on a three-dimensional GIS platform, which is generally implemented by establishing a unified geographic database, importing various planning data (such as ground red lines, terrains and building base outlines) in advance, converting coordinates, checking data conflict through manual assignment or simple space superposition analysis, manually intervening and adjusting after geometrical contradiction is found, generating a simple three-dimensional body block model based on two-dimensional planar element stretching, superposing the simple three-dimensional body block model on a digital terrain model for displaying, browsing and inquiring attributes in a three-dimensional scene by a user, adjusting preset planning indexes, and recalculating related indexes and refreshing the display height of the three-dimensional model according to the adjusted parameters by the system. However, when the method is actually used, the method still has some defects, such as low automation degree of a data fusion process and lack of an intelligent arbitration mechanism, is faced with complex topological inconsistency among multi-source data, is seriously dependent on manual discrimination and manual modification, is low in efficiency and is easy to introduce subjective errors, the construction of a three-dimensional model and the fitting of terrain are static and post, the embedding of the model and the terrain is often inaccurate after the model is generated, once a planning scheme is subjected to local adjustment, the whole scene or a large-scale model is usually required to be reconstructed, efficient incremental update cannot be realized, the relative cutting of a visualization and interaction mode is realized, planning analysis, current situation comparison and scheme simulation are usually completed in different windows or tools, attribute linkage and real-time feedback are lacked, and delay exists between the adjustment of the planning scheme and the evaluation of the effect, and decision support is not intuitive and agile. Disclosure of Invention In order to overcome the above-mentioned drawbacks of the prior art, embodiments of the present invention provide a map data real-time fusion and visualization system for homeland space planning, which solves the problems set forth in the above-mentioned background art through the following schemes. The map data real-time fusion and visualization system for the homeland space planning comprises a space-time reference unifying module, a coordinate converter, a timestamp aligner, a time-stamp storage module and a time-stamp storage module, wherein the space-time reference unifying module comprises a first data interface unit, an access satellite remote sensing image data stream, a homeland investigation vector data stream and a planning control line data stream; The flow topology fusion module is used for receiving the intermediate data flow in real time, carrying out space superposition analysis on linear and planar vector elements of the same planning partition, generating a topology inconsistent record, presetting an authority level mapping table, and automatically adjusting the geometric node coordinates of elements corresponding to low-level data sources when the topology inconsistent record is triggered to output a three-dimensional space entity set; The incremental three-dimensional model construction module is internally provided with a rule base, a body block generator and a terrain jogger, stores the mapping relation between planning attributes and three-dimensional visual parameters, calls the rule base according to the planning attribute codes of three-dimensional space entities, stretches planar entities into colored body blocks according to the mapping height, generates linear entities into a tubular model, performs geometric intersection and vertex fusion on the body blocks and the bottom surface contours of the tubular model and a triangular network of a digital elevation model, and outputs three-dimensional planning scene grid data; The multi-mode interactive visualization engine module is provided with a built-in view controller, an attribute linkage device and a scheme simulator, and is used for managing the layer superposition and the display and hidden switching of three types of views of planning analy