Drainage basin data fusion processing method and system based on digital sand table

Abstract

The invention discloses a watershed data fusion processing method based on a digital sand table, and relates to the technical field of data processing, and the method comprises the steps: building a digital sand table model of a target watershed in advance, and segmenting the target watershed into a plurality of sub-regions in each presentation state based on the digital sand table model; obtaining multi-source data of the target drainage basin, and unifying the format of the multi-source data into a standard format; matching a corresponding data source type and a mapping relation according to the multi-source data, and converting the multi-source data into an image format; according to the converted image format, carrying out local replacement on the digital sand table model; and providing an interactive interface to present the digital sand table model based on the interactive interface and refresh and display the process of local replacement so as to complete fusion presentation of the drainage basin multi-source data. On the basis of a three-dimensional digital sand table bottom plate, data interaction is added, fusion presentation of water conservancy objects and space, monitoring and business data associated with the water conservancy objects is achieved, and a more flexible technical means is provided for deep research of hydroelectric business.

Description

Technical Field

[0001] The present application relates to the technical field of data processing and modeling, and in particular to a watershed data fusion processing method and system based on a digital sandbox. Background Art

[0002] At present, management information systems have been designed and built around water conservancy application fields such as flood control and drought relief, water resources management and water resources monitoring. However, there are still common problems such as difficult management of multi-source water conservancy data and poor three-dimensional visualization effects, especially in the display of multi-source water conservancy data. Traditional methods based on web pages or two-dimensional geographic information systems can no longer meet the needs of water conservancy management decision makers.

[0003] Sand table models have existed since ancient times. The earliest models were used in the military field as combat models. They were made by scaling the real objects according to a certain proportion and using mud, sand or other building materials to display terrain and objects. However, traditional sand tables have problems such as large footprint, inconvenience in carrying, and poor interaction between users and the sand table. Summary of the invention

[0004] The embodiment of the present application provides a watershed data fusion processing method and system based on a digital sandbox. On the basis of a three-dimensional digital sandbox base, data interaction is added to realize the integrated presentation of spatial, monitoring, and business data of water conservancy objects and their related data, providing more flexible technical means for in-depth research on hydropower business.

[0005] The present application embodiment proposes a watershed data fusion processing method based on a digital sandbox, comprising: A digital sand table model of the target watershed is established in advance, and based on the digital sand table model, it is divided into multiple sub-areas in each presentation state, and a mapping relationship with each sub-area of ​​the digital sand table model is established in advance according to the multi-source data type; Acquire multi-source data of the target watershed, and unify the formats of the multi-source data into a standard format, wherein the multi-source data at least includes image data, weather data, and water area data of the target watershed; According to the multi-source data matching corresponding data source types and the mapping relationship, the multi-source data is converted into an image format; According to the converted image format, the digital sandbox model is partially replaced; An interactive interface is provided to present the digital sandbox model based on the interactive interface and to refresh and display the process of local replacement, so as to complete the fusion presentation of multi-source data of the watershed.

[0006] Optionally, the digital sandbox model of the target watershed is pre-established including: A three-dimensional model with the reservoirs, hydropower stations and measuring stations in the target river basin as the object is established as the digital sandbox model, wherein a plurality of key points are configured in the target river basin to establish a three-dimensional model based on each key point, and a detailed model is established in the key point area, and a rough model is established between the key points.

[0007] Optionally, unifying the formats of the multi-source data into a standard format includes: The multi-source data are unified into a numerical format, wherein image data in the multi-source data are compressed into a matrix form.

[0008] Optionally, according to matching the multi-source data with corresponding data source types and the mapping relationship, converting the multi-source data into an image format includes: Pre-set associated pixel intervals for weather data and water area data; Extracting numerical information from the unified multi-source data, and selecting pixels from associated pixel intervals based on the numerical information to construct multiple maps, so as to convert the multi-source data into an image format, wherein multiple maps are constructed for each sub-region, and the total map area is larger than the area of ​​the sub-region.

[0009] Optionally, according to the converted image format, partially replacing the digital sandbox model includes: According to the numerical format of multi-source data, the similarity between the current value of each sub-region and the previous value is calculated; When the similarity is greater than a preset threshold, the constructed maps are successively used based on the digital sandbox model in a set order to refresh the sub-areas.

[0010] Optionally, the process of presenting the digital sandbox model based on the interactive interface and refreshing and displaying the partial replacement includes: The refresh duration of each sub-area is set to generate a corresponding frame animation after the refresh, and the frame animation is played back in the corresponding sub-area according to the user's click instruction.

[0011] Optionally, the method further comprises verifying the digital sandbox model based on a Draco compression algorithm after the refresh time of each sub-area.

[0012] Optionally, interactive options are provided to provide scene browsing, basemap terrain, watershed playback and common functions based on the interactive options.

[0013] The embodiment of the present application also proposes a watershed data fusion processing system based on a digital sandbox, which is characterized in that it includes a processor and a memory, and a computer program is stored in the memory. When the computer program is executed by the processor, the steps of the watershed data fusion processing method based on the digital sandbox as described above are implemented.

[0014] The method of the present application increases data interaction on the basis of a three-dimensional digital sand table base, realizes the integrated presentation of spatial, monitoring, and business data of water conservancy objects and their related data, and provides more flexible technical means for in-depth research on hydropower business.

[0015] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings: Figure 1 The following is a schematic diagram of the basic process of the watershed data fusion processing method of this embodiment. DETAILED DESCRIPTION

[0017] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0018] The present application embodiment proposes a watershed data fusion processing method based on a digital sandbox, such as Figure 1 As shown, the following steps are included: In step S101, a digital sand table model of the target watershed is pre-established, and based on the digital sand table model, it is divided into multiple sub-areas in each presentation state, and a mapping relationship with each sub-area of ​​the digital sand table model is pre-established according to the multi-source data type. In some embodiments, based on the digital sand table model, it is divided into multiple sub-areas in each presentation state, which may include, for example, a water sub-area, a river bank sub-area, a sky sub-area, a dam sub-area, a power station sub-area, etc. In a specific example, establishing a mapping relationship with each sub-area of ​​the digital sand table model according to the multi-source data type may be to perform regional correspondence, for example, the river bank area is mapped to the corresponding sub-area of ​​the digital sand table model.

[0019] In step S102, multi-source data of the target watershed is obtained, and the formats of the multi-source data are unified into a standard format, wherein the multi-source data at least includes image data, weather data and water area data of the target watershed. In a specific example, the corresponding image data may include, for example, riverbank images, dam images, power station images, etc. In some examples, the standard format may be a numerical format, and conversion in a numerical format can reduce the amount of subsequent data processing and improve efficiency.

[0020] In step S103, the multi-source data is converted into an image format according to the corresponding data source type and the mapping relationship of the multi-source data. In a specific example, for example, the water level can be mapped to a map of the corresponding area of ​​the digital sandbox model, for example, the water level can be increased or decreased according to the current water level to present the change relationship to the user, and the weather data can also be mapped to a map of the corresponding area.

[0021] In step S104, the digital sandbox model is partially replaced according to the converted image format. In a specific example, no processing is performed on the area that has not changed.

[0022] In step S105, an interactive interface is provided to present the digital sandbox model based on the interactive interface and refresh the process of displaying the local replacement, so as to complete the fusion presentation of multi-source data of the watershed.

[0023] The method of the present application increases data interaction on the basis of a three-dimensional digital sand table base, realizes the integrated presentation of spatial, monitoring, and business data of water conservancy objects and their related data, and provides more flexible technical means for in-depth research on hydropower business.

[0024] In some examples, the pre-established digital sandbox model of the target watershed includes: A three-dimensional model with reservoirs, hydropower stations and measuring stations in the target basin as the object is established as the digital sand table model, wherein a plurality of key points are configured in the target basin to establish a three-dimensional model based on each key point, and a detailed model is established in the key point area, and a rough model is established between the key points. The specific key points can be set according to the length, such as 500m, etc., so as to reduce the basin to a digital sand table model to reflect the global basin status.

[0025] In some examples, unifying the formats of the multi-source data into a standard format includes: unifying the multi-source data into a numerical format, wherein image data in the multi-source data is compressed into a matrix form. For example, water level, temperature, rainfall, etc. are unified into numerical formats.

[0026] In some examples, according to matching the multi-source data with corresponding data source types and the mapping relationship, converting the multi-source data into an image format includes: Pre-set associated pixel intervals for weather data and water area data; Extracting numerical information from the unified multi-source data, and selecting pixels from associated pixel intervals based on the numerical information to construct multiple maps, so as to convert the multi-source data into an image format, wherein multiple maps are constructed for each sub-region, and the total map area is larger than the area of ​​the sub-region.

[0027] For example, in some examples, for the sky, the color range of blue, white, gray, etc. is matched according to whether it is raining, and by constructing multiple maps for each sub-area, the changes in the local sub-area can be simulated. For example, for the water level, a map can be generated in the changing part, so as to present the water level change based on the digital sandbox model.

[0028] In some examples, partially replacing the digital sandbox model according to the converted image format includes: According to the numerical format of multi-source data, the similarity between the current value of each sub-area and the previous value is calculated. For example, for areas such as river banks and dams, if the collected image data does not change much, the current presentation state of the digital sandbox model can be maintained.

[0029] When the similarity is greater than a preset threshold, the digital sandbox model is refreshed in the sub-area using the constructed maps one by one according to the set order. For example, for a sub-area with changes in weather, water level, etc., the digital sandbox model is refreshed in the order from bottom to top using the constructed maps one by one.

[0030] In some examples, the process of presenting the digital sandbox model based on the interactive interface and refreshing and displaying the local replacement includes: setting the refresh duration of each sub-area to generate a corresponding frame animation after the refresh, and playing back the frame animation in the corresponding sub-area according to the user's click instructions.

[0031] For example, according to a click instruction of the user in the corresponding sub-area, a partial playback according to the frame animation can be initiated in the corresponding sub-area.

[0032] In some examples, the digital sandbox model is verified based on the Draco compression algorithm after the refresh time of each sub-area. In a specific example, the 3D Tiles data in the digital sandbox model can be used in conjunction with an open source library to assist in verifying the use of an example model.

[0033] In some examples, interactive options are provided to provide scene browsing, base map terrain, watershed playback and common functions based on the interactive options, and fine-tune the details of the digital sandbox model through corresponding functions.

[0034] The embodiment of the present application also proposes a watershed data fusion processing system based on a digital sandbox, which is characterized in that it includes a processor and a memory, and a computer program is stored in the memory. When the computer program is executed by the processor, the steps of the watershed data fusion processing method based on the digital sandbox as described above are implemented.

[0035] In addition, although exemplary embodiments have been described herein, the scope includes any and all embodiments based on the present disclosure with equivalent elements, modifications, omissions, combinations (e.g., various embodiments intersecting schemes), adaptations or changes. It is not limited to the examples described in this specification or during the implementation of this application, and its examples will be interpreted as non-exclusive.

[0036] The above description is intended to be illustrative rather than restrictive. For example, the above examples (or one or more of them) can be used in combination with each other. For example, those of ordinary skill in the art may use other embodiments when reading the above description.

[0037] The above embodiments are merely exemplary embodiments of the present disclosure. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present disclosure, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A watershed data fusion processing method based on digital sandbox, characterized in that: include: A digital sand table model of the target watershed is established in advance, and based on the digital sand table model, it is divided into multiple sub-areas in each presentation state, and a mapping relationship with each sub-area of ​​the digital sand table model is established in advance according to the multi-source data type; Acquire multi-source data of the target watershed, and unify the formats of the multi-source data into a standard format, wherein the multi-source data at least includes image data, weather data, and water area data of the target watershed; According to the multi-source data matching corresponding data source types and the mapping relationship, the multi-source data is converted into an image format; According to the converted image format, the digital sandbox model is partially replaced; An interactive interface is provided to present the digital sandbox model based on the interactive interface and to refresh and display the process of the local replacement, so as to complete the fusion presentation of multi-source data of the watershed.

2. The watershed data fusion processing method based on digital sandbox according to claim 1 is characterized in that: The digital sandbox model of the target watershed is pre-built including: A three-dimensional model with the reservoirs, hydropower stations and measuring stations in the target river basin as the object is established as the digital sandbox model, wherein a plurality of key points are configured in the target river basin to establish a three-dimensional model based on each key point, and a detailed model is established in the key point area, and a rough model is established between the key points.

3. The watershed data fusion processing method based on digital sandbox according to claim 1 is characterized in that: Unifying the formats of the multi-source data into a standard format includes: The multi-source data are unified into a numerical format, wherein image data in the multi-source data are compressed into a matrix form.

4. The watershed data fusion processing method based on digital sandbox according to claim 3 is characterized in that: According to matching the multi-source data with the corresponding data source type and the mapping relationship, converting the multi-source data into an image format includes: Pre-set associated pixel intervals for weather data and water area data; Extracting numerical information from the unified multi-source data, and selecting pixels from associated pixel intervals based on the numerical information to construct multiple maps, so as to convert the multi-source data into an image format, wherein multiple maps are constructed for each sub-region, and the total map area is larger than the area of ​​the sub-region.

5. The watershed data fusion processing method based on digital sandbox according to claim 3 is characterized in that: According to the converted image format, the partial replacement of the digital sand table model includes: According to the numerical format of multi-source data, the similarity between the current value of each sub-region and the previous value is calculated; When the similarity is greater than a preset threshold, the constructed maps are successively used based on the digital sandbox model in a set order to refresh the sub-areas.

6. The watershed data fusion processing method based on digital sandbox according to claim 5 is characterized in that: The process of presenting the digital sandbox model based on the interactive interface and refreshing and displaying the partial replacement includes: The refresh duration of each sub-area is set to generate a corresponding frame animation after the refresh, and the frame animation is played back in the corresponding sub-area according to the user's click instruction.

7. The watershed data fusion processing method based on digital sandbox according to claim 6 is characterized in that: The method also includes verifying the digital sandbox model based on the Draco compression algorithm after the refresh time of each sub-area.

8. The watershed data fusion processing method based on digital sandbox according to claim 1 is characterized in that: It also includes providing interactive options to provide scene browsing, basemap terrain, watershed playback and common functions based on interactive options.

9. A watershed data fusion processing system based on digital sandbox, characterized in that: It comprises a processor and a memory, wherein a computer program is stored in the memory, and when the computer program is executed by the processor, the steps of the watershed data fusion processing method based on the digital sandbox as described in any one of claims 1 to 8 are implemented.

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