CN106844622B - Full-space information expression method and full-space information system - Google Patents

Abstract

The invention discloses a full-space information expression method and a full-space information system, wherein the method comprises the following steps: static description of full-space information: the full-space information comprises position coordinates (x, y, z) and natural attribute information of space entities in the physical world, and a network virtual world; adding a time attribute, and attaching a time identifier to a static space entity to realize dynamic description of full-space information; and providing place name address identification and address grid coding identification under a unified space-time standard so as to realize correlation and integration among different space entities based on geographic space positions or ranges. The system comprises a space entity basic description module, a time identification module and a place name address identification module. The invention is used for realizing dynamic description and fusion communication of all space entities with position information in a physical world in a virtual world, and realizing the expression of the whole space information of the space entities and thematic data under a unified space-time reference by the geographical position, natural attribute and time attribute.

Description

Full-space information expression method and full-space information system

Technical Field

The invention relates to the technical field of mapping geographic information spatial expression, in particular to a full-spatial information expression method and a full-spatial information system.

Background

In recent years, with the development and popularization of information and communication technologies, domestic digital city construction has achieved numerous achievements, and smart city construction is the current booming. The development and construction of smart cities bring unprecedented opportunities and challenges to city planning and management in China, and the basic space-time concept of the traditional city planning and management object is developed to a new stage in the field of mapping geographic information.

The new phase presents two challenges: first, in terms of time, the current time interval is greatly shortened, and the real-time dynamic demand of data is continuously increased. The time interval of traditional city planning is usually 5 years and 10 years, 20 years or even longer, the acquisition of basic mapping data is often time interval of 1 year, 2 years and 5 years, but the application of information technology, internet technology and real-time big data shortens the possible reaction time of city planning and data acquisition to several days, several hours or even several minutes, and the position-related mass-source data is generated at any time and any place. At the same time, the application of planning and data is undergoing a static to dynamic transition. Traditional city planning and management relies primarily on static data, but the application of large amounts of real-time data can more easily master the dynamic changes of cities and the flow of people and things therein. The new urban system is no longer a statically balanced system and dynamic and unbalanced will be normal. Secondly, in terms of space, the precision of spatial data is higher and higher, the precision of city management is greatly improved, the application of big data improves the utilization efficiency and accuracy of the data, but meanwhile, each department (territory, planning and the like) of a city establishes a unique geographic unit division standard according to the business basis of the department, so that the multi-source spatial data is inconsistent on the basic spatial unit, a unified and standard geographic reference system is lacked, and the data is difficult to fuse.

Therefore, at the present stage, an expression method for complex spatiotemporal information is urgently needed to realize comprehensive and systematic management and application of the spatiotemporal information.

Disclosure of Invention

The present invention provides a full-space information expression method and a full-space information system, which implement fusion communication of all pieces of information with location identifiers to solve the problems proposed in the background art.

In order to achieve the purpose, the invention provides the following technical scheme:

a full-space information expression method comprises the following steps:

A. the total space information comprises position coordinates (x, y, z) and natural attribute information of space entities in the physical world, and a network virtual world which utilizes an IP address and UR L to identify the position of a computer or a user;

B. adding a time attribute, and attaching a time identifier to a static space entity to realize dynamic description of full-space information;

C. and providing place name address identification and address grid coding identification under a unified space-time standard so as to realize correlation and integration among different space entities based on geographic space positions or ranges.

As a further scheme of the invention: the physical world comprises an overground entity and an underground entity, wherein the overground entity is divided into an indoor space and an outdoor space, and the underground entity comprises an underground pipeline, underground traffic and an underground activity place.

As a further scheme of the invention: in step a, the static description of the full-space information is realized by a space entity basic description module, and a space entity comprises two basic features: spatial data and attribute features.

As a further scheme of the invention: spatial data includes, but is not limited to, vector data, image data, three-dimensional data, and real-time position data.

As a further scheme of the invention: in the step B, adding the time attribute is to inject the structured static data and the unstructured streaming data into a time identifier to form a geographic entity space cube model composed of time, space and attributes.

As a further scheme of the invention: in the step C, coordinate matching is directly carried out on the space entity with the space position coordinate under the unified space-time standard; carrying out space semantic conversion firstly without a generalized place name of definite coordinate information; under the support of an address grid coding place name library, information described by generalized place names is obtained through a lexical analysis tool, a surface patch with a proper level is selected, a surface patch identifier is directly obtained on the basis of the address grid coding of the limited place name and serves as a reference surface patch code, then a unique address grid code for describing the generalized place names is obtained according to the area size, the offset angle and the offset and by means of address coding algebraic operation, and association and fusion of space entities and thematic information under a unified space-time standard are achieved.

As a further scheme of the invention: the address grid coding is an address grid coding rule which is made by comprehensively considering the characteristics of a geographical location model of a place name address on the basis of a GeoSOT grid and a coding model.

As a further scheme of the invention: the address grid code is a combined code which consists of 32-bit 16-system digits; the first 31 bits are body codes, and the last 1 bit is a check code.

As a further scheme of the invention: the address trellis codes should be arranged from left to right in the order: the code comprises a 9-bit address partition coding section, a 17-bit address grid coding section, a 5-bit address height coding section and a 1-bit digital check code, wherein the total number is 128 bits.

A total space information system for realizing the total space information expression method comprises a space entity basic description module, a time identification module and a place name and address identification module;

the space entity basic description module storage module is used for describing space coordinate position information of space data;

the time identification module is used for adding time identification to multi-source heterogeneous spatial data;

and the place name and address identification module is used for adding place name and address identification and address grid coding identification for multi-source heterogeneous spatial data.

Compared with the prior art, the invention has the beneficial effects that:

the system and the method provided by the invention increase the time attribute on the basis of finishing the standardization and the comprehensive expression of the static geographic space, perform time sequencing on the spatial information, realize the dynamic description of the geographic space, and emphasize the geographic matching of the spatial information so as to realize the comprehensive spatial information expression of the geographic position, the natural attribute and the time attribute of the geographic entity and the thematic data under the unified space-time reference for all the fusion exchanges with the position identification information. The invention realizes the spatial multi-angle integrity description of the virtual world of the overground, underground, indoor and outdoor physical world, pays attention to the time attribute causing the dynamic evolution of data, and realizes the fusion of multi-source heterogeneous data related to the position through the place name address identification and the address grid coding identification.

Drawings

FIG. 1 is a conceptual diagram of a full-space information expression method according to the present invention;

FIG. 2 is a flow chart of a method for expressing full spatial information according to the present invention;

FIG. 3 is a schematic diagram of an address trellis encoding structure of the address identification module of the present invention;

FIG. 4 is a spatial semantic conversion process based on address trellis coding according to the present invention;

FIG. 5 is a block diagram of a full-space information system according to an embodiment of the present invention;

fig. 6 is a diagram of a full-space information system according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The following describes a full-space information expression method and a full-space information system according to the present invention in detail with reference to the accompanying drawings.

Example 1

As shown in fig. 1, in the embodiment of the present invention, a method for expressing full-space information includes the following steps:

the full-space information contains the following two layers of meanings: (1) "full space" refers to a three-dimensional space based on the earth's surface, which includes both traditional open spaces, such as the spaces of aboveground entities like cultivated lands, rivers, vegetation, buildings, etc., and the spaces of underground entities like underground traffic, underground pipelines, underground civil air defense, etc., which meet the needs of urban development; the outdoor air conditioner comprises an outdoor space and an indoor space, and realizes the integration of indoor outdoor space and underground and above ground; (2) the 'full information' comprises space, time and attribute three-dimensional information of a space entity, and other thematic information fused by address name and address identification by taking a position as a link, and the main expression modes comprise vector diagrams, image diagrams, three-dimensional models, laser point clouds, infrared images and various information expression modes acquired by other sensing equipment.

100: full space representation

To date, the spatial range of the home and abroad is mostly recognized in outdoor three-dimensional scenes mainly including terrain data such as rivers, roads, vegetation and buildings, however, in the real world, buildings are the most important elements in cities, and therefore, the combination of indoor scenes of various buildings can be regarded as a complete spatial range. In the field, people can know and master each indoor link, analyze indoor micro-space, room-free, characteristics and the like, establish a topological model suitable for the indoor space, study an indoor space process analysis model and realize indoor entity management.

Although people live in the physical world, with the development of digital technology and network technology, virtual worlds, which are symbolic products of the information age, have come into existence. The virtual world can be understood as a space for expressing and constructing things and relationships thereof in a digital mode of '0' and '1', and people live in the space with the intersection of virtuality and reality. Corresponding to the real world, the virtual world is another new space where people live; in contradistinction to the real world, the virtual world presents a number of unique features.

In the real world, the position of an entity in space can be directly described by using geographic coordinates, or can be a relative position expressed by using relative azimuth and distance relations and the like, and semantic position information of a place name and an address identifier is used for describing the location of the geographic entity or element, a social event occurrence place, a path of a moving object and the like, and in a virtual environment, the position of a computer or a user can be described by using an IP address and UR L.

200: full information representation

As shown in fig. 1, the "global information" in the global space information expression method includes information of entities and events in the real world and the virtual world in all directions (horizontally indoor and outdoor, vertically above ground and underground) in space. "full information" refers to information that expresses a target entity/event from different perspectives, including basic geometric coordinates, attribute information description, and also temporally comprehensive (including past, present, and predicted future) information, and address identification information of spatial entities, topical data, and the like.

As shown in fig. 2, the flow of the method for expressing the total spatial information includes the following steps:

A. static description of full-space information;

B. adding a time attribute, and attaching a time identifier to a static space entity to realize dynamic description of full-space information;

C. and providing place name address identification and address grid coding identification under a unified space-time standard so as to realize association and integration among different geographic entities based on specific geographic spatial positions or ranges.

2001: full spatial information static description

A static spatial entity contains two basic features: spatial data and attribute features. The spatial data are operation objects of spatial entities of a physical world in a virtual world, data sources comprise indoor digitization and field acquisition, and the position coordinates (x, y, z), size, shape, direction and geometric topological relation of the spatial entities are represented by characteristics obtained by spatial semantic conversion of other data, and the attribute characteristics represent other attribute characteristics except the spatial attributes of the spatial entities and are mainly used for describing the spatial data. Such as a city point, and its attribute data includes population, GDP, greening rate, etc. According to the difference of data format and data type, the spatial data can be divided into expression forms such as vector data, image data, three-dimensional data, real-time position data and the like.

2002: adding time attribute, adding time mark to static space entity to realize dynamic description of full space information

In order to adapt to the dynamic development process of the geographic space, the space development time sequence can be emphasized by using a time identification module so as to realize the rolling management of space entities and lay a foundation for implementing the full life cycle management of the geographic space.

And injecting time marks into the structured static data and the unstructured streaming data to form a geographic entity space cube model formed by time, space and attributes. The time stamp injection block records the timeliness of this data.

2003: providing place name address identification and address grid coding identification under unified space-time standard to realize association and integration among different geographic entities based on specific geographic spatial position or range

For traditional basic mapping geographic information data, description can be completed by using a geographic entity space cube model formed by time, space and attributes, however, the real space also comprises a large amount of thematic data, and the expression of full-space information is realized only by completing the convergence of basic data and thematic data.

Some of the other collected thematic information with space position coordinate information can be matched after being subjected to unified space-time reference; the part has no space coordinate information, but the attribute item contains a place name address; and the other part only contains some place name genes, and the place name spectrum characteristics are extracted by combining Chinese word segmentation and data comparison technologies and through unified cognition based on semantics and geographic ontologies.

For information content with spatial location coordinates, direct coordinate matching. According to the other thematic information, a segmentation sequence containing place name identification and a logic combination relation are established according to the address information of the identified and extracted place names, multiple matching based on word segmentation, body and word similarity is developed, an ambiguity elimination method after local fuzzy matching is provided, and efficient, accurate and practical place name address matching is achieved.

The basic idea of address grid coding of the address identification module of the place name is as follows: on the basis of a GeoSOT grid and a coding model, various characteristics of a geographical location model of a place name address are comprehensively considered, a set of global unified, multi-scale and homomorphic address grid coding rules are designed, and integrated fine grid coding of various place name information and address information of provinces, cities (regions, states and alliances), counties (cities, districts and flags), villages (towns and streets), street lanes (districts and villages), building buildings, houses and the like is supported.

The GeoSOT grid is a set of global grid generation proposed by Beijing university, is called a global grid generation based on 2n One-dimensional integer array geographic coordinates (geographic correlation global partitioning on One-dimension-inter and Two ton-th power), and is called GeoSOT grid for short.

A set of nationwide uniform address grid codes is designed for addresses by relying on the GeoSOT grids according to the mapping relation between the addresses and the GeoSOT grids, and the codes not only have geographic meanings, but also imply partial basic information of the addresses.

As shown in fig. 3, the address trellis code of the address name identification module is designed as a combined code, and is composed of 32-bit 16-ary digits. The first 31 bits are body codes, and the last 1 bit is a check code. Arranged from left to right should be: the code comprises a 9-bit address partition coding section, a 17-bit address grid coding section, a 5-bit address height coding section and a 1-bit digital check code, wherein the total number is 128 bits.

In the natural language description, human beings are used to describe one place name address (spatial position) by a quadruplet of "spatial position (place name in narrow sense) + offset angle + offset distance", such as "tiananmen at 15km west". Addresses of the generalized place names cannot be directly positioned and identified, and space semantic conversion is required to be performed firstly.

As shown in fig. 4, the idea of spatial semantic conversion based on address trellis coding is: under the support of an address grid coding place name library, aiming at the generalized place name description which cannot be directly positioned, information of ' space position (narrow place name) + offset angle + offset distance ' and the like ' of the generalized place name description is obtained through a lexical analysis tool, a surface patch with a proper level is selected, a surface patch identifier is directly obtained on the basis of the narrow place name grid code to serve as a reference surface patch code, and then the address grid code of the generalized place name description is rapidly obtained through address coding algebraic operation according to the area size, the offset angle and the offset.

Such as: the generalized description is that the Beijing university faces east 5 kilometers, and after a lexical analysis tool, address description element information such as the Beijing university, east and 5 kilometers is obtained. Inquiring Beijing university in the Place name library to obtain an address code of the Beijing university as (G001310322232023+1,2), determining that the subdivision level is 15 grades according to the position identification of 5 kilometers and the Beijing university, then determining that the offset is 6 patches according to the range size of 5 kilometers and the latitudinal length of the 15 th-grade patch as 0.78 kilometer, so that the identification code of the aggregated patch of the Beijing university and the area is (G001310322232023+1,7), and the upper right corner point is the address code G001310232322133 describing the east 5 kilometers of the Beijing university in a broad sense.

The following describes a full-space information system capable of implementing the full-space information expression method provided by the present invention, as shown in fig. 5, including a space entity basic description module, a time identification module, and an address identification module;

100: space entity basic description module

The space entity basic description module is used for describing space coordinate position information of space data including vector data, image data, three-dimensional data, place name addresses, building data, historical geographic information data, perspective planning geographic information data, real-time position data, Internet of things intelligent sensing data and real-time sensing streaming data.

200: time identification module

And the time identification module is used for adding time identification to the multi-source heterogeneous spatial data.

300: place name address identification module

And the place name and address identification module is used for adding place name and address identification and address grid coding identification for multi-source heterogeneous spatial data.

Meanwhile, the system supports the browsing functions of multi-temporal data combination, superposition, symbolized display, amplification, reduction, roaming, front view, rear view and the like, and can simulate change through animation, dynamic symbols and colors; the three-dimensional roaming function is realized, and dragging, sliding and flying modes are supported; and multi-view browsing including head-up, head-up and down-looking angles is supported.

Fig. 6 is a full-space information system developed according to the concept connotation and key technology of the full-space information expression method, showing the expression and management of the above-ground three-dimensional entity and the underground three-dimensional pipeline.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (6)

1. A full-space information expression method is characterized by comprising the following steps:

A. the total space information comprises position coordinates (x, y, z) and natural attribute information of space entities in the physical world, and a network virtual world which utilizes an IP address and UR L to identify the position of a computer or a user;

B. adding a time attribute, and attaching a time identifier to a static space entity to realize dynamic description of full-space information;

C. providing place name address identification and address grid coding identification under unified space-time standard so as to realize correlation and integration among different space entities based on geographic space positions or ranges; the physical world comprises an overground entity and an underground entity, wherein the overground entity is divided into an indoor space and an outdoor space, and the underground entity comprises an underground pipeline, underground traffic and an underground activity place; in step a, the static description of the full-space information is realized by a space entity basic description module, and a space entity comprises two basic features: spatial data and attribute features; spatial data includes, but is not limited to, vector data, image data, three-dimensional data, and real-time location data; in the step B, adding the time attribute is to inject the structured static data and the unstructured streaming data into a time identifier to form a geographic entity space cube model composed of time, space and attributes.

2. The method according to claim 1, wherein in step C, coordinate matching is directly performed on the space entity having the space position coordinates under a uniform space-time standard; carrying out space semantic conversion firstly without a generalized place name of definite coordinate information; under the support of an address grid coding place name library, information described by generalized place names is obtained through a lexical analysis tool, a surface patch with a proper level is selected, a surface patch identifier is directly obtained on the basis of the address grid coding of the limited place name and serves as a reference surface patch code, then a unique address grid code for describing the generalized place names is obtained according to the area size, the offset angle and the offset and by means of address coding algebraic operation, and association and fusion of space entities and thematic information under a unified space-time standard are achieved.

3. The method according to claim 1, wherein the address trellis encoding is an address trellis encoding rule made by comprehensively considering characteristics of a geographical location model of a place name address on the basis of a GeoSOT trellis and an encoding model.

4. The method of claim 3, wherein the address trellis is coded as a combined code consisting of 32-bit 16-ary digits; the first 31 bits are body codes, and the last 1 bit is a check code.

5. The method as claimed in claim 4, wherein the address trellis codes are arranged from left to right in the following order: the code comprises a 9-bit address partition coding section, a 17-bit address grid coding section, a 5-bit address height coding section and a 1-bit digital check code, wherein the total number is 128 bits.

6. A full-space information system for realizing the full-space information expression method according to any one of claims 1 to 5, characterized by comprising a space entity basic description module, a time identification module and an address identification module;

the space entity basic description module storage module is used for describing space coordinate position information of space data;

the time identification module is used for adding time identification to multi-source heterogeneous spatial data;

and the place name and address identification module is used for adding place name and address identification and address grid coding identification for multi-source heterogeneous spatial data.

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