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A splicing method for inter-picture surface targets

A technology of surface targets and map sheets, which is applied in the field of military geographic information systems and can solve problems such as splicing errors, lack of in-depth summary of conditions, and information redundancy.

Active Publication Date: 2019-06-18
NO 15 INST OF CHINA ELECTRONICS TECH GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] ① It is difficult to represent continuous spatial geographic information on maps stored in frames, and cannot meet the integrity requirements of geographic information;
[0004] ② There are information redundancy and logical and physical cracks between the adjacent frames of the framing, which wastes resource space
At present, the splicing of points and lines in map frame splicing is very mature, but there are still many disadvantages in the splicing of surface objects: at present, the splicing method of line objects is mainly used, because the splicing of line objects only needs to consider the splicing of current points. The splicing of surface objects should take into account the overall situation, which will lead to complex surface object splicing failures or splicing errors; there is no complete method step for how to break surface objects into lines to be spliced; newly generated after splicing There is no specific method or no consideration for how to quickly reconstruct the topological relationship of surface objects; the conditions for splicing surface objects between map sheets have not been summarized in depth, and the splicing is only done from the geometric characteristics

Method used

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  • A splicing method for inter-picture surface targets
  • A splicing method for inter-picture surface targets
  • A splicing method for inter-picture surface targets

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Embodiment Construction

[0045] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0046] The present invention provides a splicing method of surface objects between map sheets, which is described as follows:

[0047] (1) Target splicing conditions between map frames. In order to ensure that the data spliced ​​between the map sheets has the same data quality and accuracy as the original map sheets, the splicing conditions of the map sheets are summarized as follows:

[0048] ① The scale is the same;

[0049] ②Coordinate system one;

[0050] ③ The accuracy of geometric data must meet certain requirements;

[0051] ④ The attribute data of the target must be correct and complete;

[0052] ⑤ Geographic objects that make up the same physical entity must have a unique identifier that is different from other geographic objects.

[0053] (2) The chain breaking process of the targets in the two pictures. Firstly, determine the surface objec...

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Abstract

The invention discloses a splicing method of inter-picture surface targets. By using the method, the graph breadth splicing with seamless logic and physical properties can be realized, and the use continuity of the spatial data is ensured. According to the method, chain breaking operation is firstly carried out, then broken chains are spliced through a loop method, splicing follow-up processing iscarried out, and finally a rapid island relation reconstruction method is provided. The research on the splicing of the surface targets among the maps is successful, and a foundation is laid for thecontinuous visualization of the maps, the integrity and correctness of spatial analysis and the form calculation of geographic targets.

Description

technical field [0001] The invention relates to the technical field of military geographic information systems, in particular to continuous display of framed data objects, reasonable selection of annotation positions and overall analysis and query of geographic objects, and in particular to a splicing method of surface objects between map sheets. Background technique [0002] Geographical data is measured according to a certain latitude and longitude span during the measurement process. A physically complete surface object will have gaps at the cutting boundary. The hard-separated map frame is not conducive to query analysis and application, and cannot be carried out at a higher level. decision making. In general, tile-based maps have the following two drawbacks: [0003] ① It is difficult to represent continuous spatial geographic information on maps stored in frames, and cannot meet the integrity requirements of geographic information; [0004] ② There are information re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T3/40
CPCY02D10/00
Inventor 张永亮赵静方柏花
Owner NO 15 INST OF CHINA ELECTRONICS TECH GRP
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