CN111831777B - Data processing method and device, electronic equipment and computer readable storage medium - Google Patents
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Abstract
According to the data processing method and device, the electronic equipment and the computer readable storage medium, the first overlapped area is obtained according to the second geographical feature information of the forest land of the area to be checked in the first time period and the first geographical feature information of the returning forest of the area to be checked in the second time period, the first geographical feature information comprises the position information of the returning forest area and the outline shape of the returning forest area, the second geographical feature information comprises the position information of the forest land and the outline shape of the forest land, and therefore the first overlapped area can accurately obtain the area which is still used for returning the returning forest for the forest land. The second overlapping area is obtained according to the first geographical characteristic information of the returning and tilling area of the to-be-examined area of the second time period and the first geographical characteristic information of the returning and tilling area of the to-be-examined area of the first time period, and the first time period is a time period before the second time period, so that the second overlapping area can be accurately determined as the area for repeating the returning and tilling.
Description
Technical Field
The present disclosure relates to the field of geographic information processing, and in particular, to a data processing method and apparatus, an electronic device, and a computer readable storage medium.
Background
The returning cultivation and returning cultivation are to plan the sloping cultivated land which is easy to cause water and soil loss from the perspective of protecting and improving the ecological environment, stop cultivation step by step, and according to the principle of adapting to the land and the tree, forestation is carried out according to the local conditions, and forest vegetation is restored.
In the auditing work of the returning forest, the first aspect is to audit each expenditure of the spending, and the second aspect is to audit the rationality, scientificity and the like of the returning forest, for example, whether the auditing has the problems that the original forest land is still used as the returning forest area, and the area range where the returning forest is implemented in each year is overlapped.
The existing audit of returning to the cultivation is usually carried out manually, and for the audit of the second aspect, because a large amount of geographic data information is involved, the workload and difficulty of manual audit are large, and the subjectivity of the manual audit is added, so that an accurate audit result cannot be obtained.
Disclosure of Invention
In order to achieve the above object, the present application provides the following technical solutions:
A data processing method, comprising:
obtaining returning and tilling forest data of a plurality of historical time periods of a to-be-examined area; the returned plough and forest data of any one of the time periods comprises a remote sensing image of the to-be-examined area, a geographical national condition monitoring chart of the to-be-examined area and first geographical characteristic information of a returned plough and forest area of the to-be-examined area; the first geographic characteristic information at least comprises position information of the returning forest zone and outline shape of the returning forest zone;
determining second geographic feature information of the forest land included in the to-be-examined area from the geographic national condition monitoring graph of the first time period for any two adjacent time periods; determining a first overlapping area between the returned forest area and the forest land according to the second geographic characteristic information of the forest land and the first geographic characteristic information of the returned forest area in a second time period, and identifying the first overlapping area in the remote sensing image in the second time period; the second geographic characteristic information at least comprises position information of the woodland and outline shape of the woodland;
For any one of the second time periods, determining a second overlapping area between the first time period and the returning forest area of the second time period according to the first geographic characteristic information of the second time period and the first geographic characteristic information of each first time period, and identifying all second overlapping areas in the remote sensing images of the second time period, wherein the second time period is a time period except for the earliest time period in the plurality of historical time periods, and the first time period is the time period before the second time period in the plurality of historical time periods.
The method, optionally, the determining the second geographical feature information of the forest land included in the to-be-examined area includes:
identifying a preset forest land identifier from the geographical national condition monitoring chart; determining the outline shape of the forest land included in the to-be-examined area according to the forest land identifier;
determining the position information of the forest land according to position identification information preset by the geographical national condition monitoring chart;
and taking the outline shape of the woodland and the position information of the woodland as the second geographic characteristic information of the woodland.
The method, optionally, the determining a first overlapping area between the returned forest area and the forest land according to the second geographical feature information of the forest land and the first geographical feature information of the returned forest area in a second time period includes:
determining the coverage area of the forest land in a preset geographic coordinate system according to the position information of the forest land and the outline shape of the forest land;
determining a coverage area of the returning forest zone in the geographic coordinate system according to the position information of the returning forest zone and the outline shape of the returning forest zone;
an intersection area between the coverage area of the forest land and the coverage area of the return forest area is taken as the first overlap area.
The method, optionally, the determining a second overlapping area between the returning forest area of each first time period and the second time period according to the first geographic characteristic information of the second time period and the first geographic characteristic information of each first time period respectively includes:
determining coverage areas of the returning forest areas of the second time period and the first time period in a preset geographic coordinate system according to the position information and the outline shape of the returning forest areas of the second time period and the first time period respectively;
An intersection area between the coverage area of the return forest area of the second time period and the coverage area of the return forest area of each first time is taken as the second overlapping area.
In the foregoing method, optionally, identifying the first overlapping region and the second overlapping region in the remote sensing image includes:
determining position information of the first overlapping region and the second overlapping region in the geographic coordinate system, and outline shapes of the first overlapping region and the second overlapping region;
according to the position information of the first overlapping area and the second overlapping area and the outline shape, respectively carrying out superposition processing on the first overlapping area and the second overlapping area and the remote sensing image, and determining coverage areas of the first overlapping area and the second overlapping area in the remote sensing image;
and marking the coverage area in the remote sensing image by adopting a preset marking mode.
The above method, optionally, further includes, after determining the first overlapping region and the second overlapping region:
combining the remote sensing images to determine each first image spot belonging to the same attribute in the first overlapping region and the second overlapping region; the attribute of the pattern spot is determined according to the surface plant characteristics of the pattern spot;
Calculating the area of each first image spot, merging the first image spots to other first image spots closest to the first image spots under the condition that the area of the first image spots is smaller than a first threshold value, and generating a second image spot; when the first image spot area is larger than a second threshold value, taking the first image spot as a first target image spot;
calculating an area of the second image patch for each generated second image patch, and taking the second image patch as the first target image patch when the area of the second image patch is larger than the second threshold value;
for each first target image spot, combining the remote sensing image, and taking the first target image spot, of which the distance from a traffic road in the remote sensing image is smaller than a third threshold value, as a second target image spot, wherein the second target image spot is an area to be inspected in the field;
and outputting the position information of the second target image spot and the area of the second target image spot.
In the above method, optionally, the return forest data of the plurality of historical time periods in the to-be-examined area is vector data based on the same geographic coordinate system.
A data processing apparatus comprising:
The acquisition unit is used for acquiring the returned cultivation and repayment data of the to-be-examined area in a plurality of historical time periods; the returned plough and forest data of any one of the time periods comprises a remote sensing image of the to-be-examined area, a geographical national condition monitoring chart of the to-be-examined area and first geographical characteristic information of a returned plough and forest area of the to-be-examined area; the first geographic characteristic information at least comprises position information of the returning forest zone and outline shape of the returning forest zone;
the first determining unit is used for determining second geographic feature information of the forest land included in the to-be-examined area from the geographic national condition monitoring graph of the first time period according to any two adjacent time periods; determining a first overlapping area between the returning forest zone and the forest land according to the second geographic characteristic information of the forest land and the first geographic characteristic information of the returning forest zone in the second time period, and identifying the first overlapping area in the remote sensing image in the second time period; the second geographic characteristic information at least comprises position information of the woodland and outline shape of the woodland;
A second determining unit, configured to determine, for any one of second time periods, a second overlapping area between the returning forest areas of each first time period and the second time period according to the first geographical feature information of the second time period and the first geographical feature information of each first time period, and identify all the second overlapping areas in the remote sensing image of the second time period, where the second time period is a time period other than an earliest time period among the plurality of historical time periods, and the first time period is the time period before the second time period among the plurality of historical time periods.
An electronic device, comprising: a processor and a memory for storing a program; the processor is configured to run the program to implement the data processing method described above.
A computer readable storage medium having instructions stored therein which, when run on a computer, cause the computer to perform the data processing method described above.
The method and the device are characterized in that the first overlapped area is obtained according to the second geographic characteristic information of the forest land combined with the first time period to-be-examined area and the first geographic characteristic information of the returning forest area of the second time period to-be-examined area, wherein the first geographic characteristic information comprises the position information of the returning forest area, the outline shape of the returning forest area and the second geographic characteristic information comprises the position information of the forest land and the outline shape of the forest land. Therefore, the obtained first overlapping area can accurately determine the area where the forest land is returned to the cultivation area.
In addition, the second overlapping area is obtained according to the first geographical characteristic information of the returning forest area of the to-be-examined area combined with the second time period and the first geographical characteristic information of the returning forest area of the to-be-examined area of the first time period, wherein the first time period is a time period before the second time period in a plurality of historical time periods, the first geographical characteristic information comprises the position information of the returning forest area and the outline shape of the returning forest area, and therefore the obtained second overlapping area can accurately determine the area for repeating the returning forest.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method for data processing according to an embodiment of the present application;
FIG. 2 is a flowchart of yet another data processing method according to an embodiment of the present application;
FIG. 3 is a flowchart of yet another data processing method according to an embodiment of the present application;
FIG. 4 is a schematic structural diagram of a data processing apparatus according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
FIG. 1 is a flowchart of a data processing method according to an embodiment of the present disclosure, which may include the following steps:
s101, obtaining the returned cultivation and forest reduction data of the to-be-examined area in a plurality of historical time periods.
The time period is a time unit, may be a year, a quarter, or other time units, and in this embodiment, the time period is a year, that is, the history time period is a history year, and the plurality of history time periods may be continuous history years or intermittent history years.
The return forest data of any time period comprises a remote sensing image of the to-be-examined area, a geographical national condition monitoring chart of the to-be-examined area and first geographical characteristic information of the return forest area of the to-be-examined area, wherein the first geographical characteristic information comprises position information of the return forest area, the outline shape of the return forest area and the area of the return forest area.
In this embodiment, the return forest data of the plurality of historical time periods of the area to be examined is vector data based on the same geographic coordinate system.
S102, determining second geographic feature information of the forest land included in the to-be-examined area from the geographic national condition monitoring graph of the first time period according to any two adjacent time periods.
In this step, the first period is a period of time earlier in two adjacent periods of time. The second geographical feature information of the woodland includes position information of the woodland and a contour shape of the woodland, and of course, may also include a woodland area and the like.
The specific implementation mode for determining the second geographic characteristic information of the forest land comprises the steps A1 to A3:
and A1, identifying a preset forest land identifier from a geographical national condition monitoring chart, and determining the outline shape of the forest land included in the to-be-examined area according to the forest land identifier.
The geographical national condition monitoring diagram comprises identifications of various different land attributes, wherein the land attributes can be forest lands, lakes, traffic roads, cultivated lands and the like, and the different land attributes are marked by different identifications. For example, different land-like attributes may be identified with different legends, so from identifying a woodland identification, the contour shape of the woodland included in the area under review may be determined.
Furthermore, the area corresponding to the outline shape of the forest land can be calculated according to the coordinate information of the geographical national condition monitoring chart, so that the area of the forest land is obtained.
And A2, determining the position information of the forest land according to the position identification information preset by the geographical national condition monitoring chart.
For example, the location information of the forest land may be obtained according to the longitude and latitude identification information in the geographical national condition monitoring chart, and the location information of the forest land may be the location coordinates of a representative location point in the forest land, for example, the location coordinates of a central location point of the forest land, and the location coordinates of preset edge location points (for example, the edge location points with the greatest longitude, the greatest latitude and the smallest latitude) of the forest land.
And A3, taking the outline shape of the woodland and the position information of the woodland as second geographic characteristic information of the woodland.
Further, the outline shape of the woodland, the position information of the woodland, and the area of the woodland can also be used as the second geographic characteristic information of the woodland.
S103, determining a first overlapping area between the returned forest area and the forest land according to the second geographical feature information of the forest land in the first time period and the first geographical feature information of the returned forest area in the second time period in the two time periods.
In this step, the second period is a period of time later in two adjacent periods of time. The specific implementation manner of the step comprises the steps of B1 to B3:
and B1, determining the coverage area of the woodland in a preset geographic coordinate system according to the position information of the woodland and the outline shape of the woodland.
For example, the corresponding direction position of the contour shape of the forest land in the geographic coordinate system can be determined according to the position coordinates of the representative position points of the forest land, so as to obtain the coverage area of the forest land in the preset geographic coordinate system.
And B2, determining the coverage area of the returned-to-tillage forest area in a geographic coordinate system according to the position information of the returned-to-tillage forest area and the outline shape of the returned-to-tillage forest area. For a specific implementation of the step, reference may be made to step B1.
And B3, judging whether an intersection area exists between the coverage area of the forest land and the coverage area of the returning forest area, if so, executing the step B4, and if not, executing the step B5.
And step B4, taking the intersection area as a first overlapping area.
And B5, determining that the first overlapping area does not exist.
S104, identifying a first overlapping area in the remote sensing image of a second time period in the two time periods.
The first overlapping area is identified in the remote sensing image of the second time period, so that the remote sensing image of the second time period can be identified, the first time period is a forest land, and the second time period is still used as an area for returning to the forest land.
The specific implementation mode of the steps is as follows: determining position information of the first overlapping region in a geographic coordinate system and outline shape of the first overlapping region, superposing the remote sensing images of the first overlapping region in a second time period according to the position information and outline shape of the first overlapping region, determining coverage areas of the first overlapping region in the remote sensing images, and marking the coverage areas in the remote sensing images by adopting a preset marking mode. The position information of the first overlapping area in the geographic coordinate system may be position coordinates of a center point and a preset edge point of the first overlapping area, and the preset identification mode may be to identify the coverage area by adopting a preset color or pattern.
S105, for any one of the second time periods, determining a second overlapping area between the returned areas of each first time period and the second time period according to the first geographical characteristic information of the returned areas of the second time period and the first geographical characteristic information of the returned areas of each first time period.
In this step, the second period is a period other than the earliest period among the plurality of history periods, and the first period is a period preceding the second period among the plurality of history periods.
The specific implementation mode of the step is as follows: and determining coverage areas of the second time period and the returned forest areas of each first time period in a preset geographic coordinate system according to the position information and the outline shape of the returned forest areas of the second time period and each first time period, and taking an intersection area between the coverage areas of the returned forest areas of the second time period and the coverage areas of the returned forest areas of each first time period as a second overlapping area. The specific embodiment of determining the coverage area of the returning forest area in the geographic coordinate system may refer to step B1 of S103, which is not described herein.
S106, identifying all second overlapping areas in the remote sensing images in the second time period.
And marking all second overlapping areas in the remote sensing images of the second time period, so that the remote sensing images of the second time period can be identified, and the first time is a returned forest area, but the second time is still used as the area of the returned forest area, so that the repeated returned forest area can be determined.
The specific implementation mode of the step is as follows: determining the position information of the second overlapping region in the geographic coordinate system and the outline shape of the second overlapping region, performing superposition processing on the remote sensing image of the second overlapping region and the second time period according to the position information and the outline shape of the second overlapping region, determining the coverage area of the second overlapping region in the remote sensing image, and marking the coverage area in the remote sensing image in a preset marking mode.
The method provided in this embodiment is because the first overlapping area is obtained according to the second geographical feature information of the forest land combined with the first time period to-be-examined area and the first geographical feature information of the returning forest area of the second time period to-be-examined area, the first geographical feature information includes the position information of the returning forest area, the contour shape of the returning forest area, and the second geographical feature information includes the position information of the forest land and the contour shape of the forest land. Therefore, the obtained first overlapping area can accurately determine the area where the forest land is returned to the cultivation area.
In addition, the second overlapping area is obtained according to the first geographical characteristic information of the returning forest area of the to-be-examined area combined with the second time period and the first geographical characteristic information of the returning forest area of the to-be-examined area of the first time period, wherein the first time period is a time period before the second time period in a plurality of historical time periods, the first geographical characteristic information comprises the position information of the returning forest area and the outline shape of the returning forest area, and therefore the obtained second overlapping area can accurately determine the area for repeating the returning forest.
In actual returning and returning forest audit work, the overlapping area obtained through data processing needs to be inspected in the field, and because the range of the overlapping area is quite large and the traffic convenience of different overlapping areas is different, the area suitable for inspection needs to be selected from the overlapping areas for workers. For this reason, on the basis of fig. 1, the present application further proposes a data processing method, as shown in fig. 2, and this embodiment further includes the following steps on the basis of the steps of the flow shown in fig. 1:
s107, combining the remote sensing images to determine each first image spot belonging to the same attribute in the first overlapping region and the second overlapping region.
The attribute of the map spots is determined according to the characteristics of the surface plant of the map spots, and the map spots corresponding to different surface plants in the remote sensing image are different, for example, the different surface plants have the following characteristics in the remote sensing image: arbor is bigger and bigger because of its shape, has obvious shadow on the remote sensing image, shrubs are in uneven fine grain structure on the remote sensing image, and the sliced bamboo forest is in regular batting shape on the remote sensing image.
S108, calculating the area of each first pattern spot.
S109, when the area of the first pattern spot is smaller than the first threshold value, merging the first pattern spot to other first pattern spots closest to the first pattern spot, and generating a second pattern spot.
The first threshold may be set to a smaller value, and the area of the first pattern spot is smaller than the first threshold, and is likely to be a small pattern spot which is generated by spatial overlapping treatment between the woodland and the returning forest zone or between the returning forest zone and the returning forest zone, and such pattern spots are often the same pattern spot as other first pattern spots closest thereto in practice, so that the pattern spots can be merged into other first pattern spots closest thereto.
S110, when the area of the first pattern spot is larger than a second threshold value, the first pattern spot is taken as a first target pattern spot.
The second threshold is a preset larger value which is larger than the first threshold, the area of the first pattern spot is larger than the second threshold, and the first pattern spot is a complete pattern spot which preliminarily has field investigation conditions.
S111, calculating the area of each second pattern spot for each generated second pattern spot.
And S112, when the area of the second image spot is larger than a second threshold value, taking the second image spot as the first target image spot.
S113, combining the remote sensing image with each first target pattern spot, and taking the first target pattern spot with the distance from the traffic road in the remote sensing image being smaller than a third threshold value as a second target pattern spot. The second target spot is the area to be investigated in the field.
The remote sensing image within the preset range of the distance map spots comprises traffic roads, so that the traffic of the map spots is good, and the condition of field investigation is provided.
And S114, outputting the position information of the second target image spot and the area of the second target image spot.
According to the method provided by the embodiment, the image spots in the first overlapping area and the second overlapping area are analyzed and processed, and the area which is suitable for investigation is selected from the overlapping areas, so that the convenience and efficiency of investigation by staff can be improved.
The method provided in the embodiment of the present application may be implemented based on ArcGIS, and for this reason, the further method for processing data provided in the embodiment of the present application involves the same steps, content, or specific explanation of name terms as those of the foregoing embodiment, and reference may be made to the foregoing embodiment, which is not repeated herein. As shown in fig. 3, the following steps may be included.
S301, receiving an operation script.
The operation script may be a python script written by a staff, where the script statement of the operation script at least includes a script statement of a specified input data type, and invokes an intersection analysis tool in ArcGIS to perform data space superposition analysis on the returned-cultivation data of a plurality of historical time periods, so as to obtain a script statement of an overlapping region.
S302, generating an analysis model of the visual interface according to the operation script.
Included in the visual interface are types of data that prompt the user for input, such as, for example, return to tilling data for a plurality of historical time periods for the area to be examined, and the first and second thresholds in the above embodiments. Wherein, according to the running script, the specific implementation mode for generating the visual interface can refer to the prior art.
S303, obtaining the returned cultivation forest data of a plurality of historical time periods of the to-be-examined area input by the user based on the visual interface and threshold parameters.
The visual interface is provided with a prompt box for prompting a user to input data, and the user can input the returned cultivation forest data of a plurality of historical time periods in the audit area and threshold parameters in the prompt box.
S304, responding to an operation instruction input by a user in an analysis model of the visual interface, and generating and outputting an audit result for each historical time period according to the operation script, the returned and cultivated forest data of a plurality of historical time periods and the threshold parameter.
After finishing data input according to the prompt information of the visual interface, responding to an operation instruction input by the user in an analysis model of the visual interface, and carrying out data processing on the returned tillage forest data of a plurality of historical time periods by utilizing an intersecting analysis tool in the ArcGIS according to the execution flow of each script statement in the operation script, wherein the specific data processing process can refer to the flow shown in fig. 1 to generate and output auditing for each historical time period.
According to the method provided by the embodiment, based on the ArcGIS and the python script, data space superposition analysis can be carried out on the returned tillage forest data of a plurality of historical time periods, and the aim of an overlapping area is obtained, so that the method is particularly good in practicality and operability.
Fig. 4 is a schematic structural diagram of a data processing apparatus 400 according to an embodiment of the present application, including:
an acquisition unit 401 for acquiring return data of a plurality of history periods of the area to be examined; the returned-to-tillage forest data of any time period comprises a remote sensing image of the to-be-examined area, a geographical national condition monitoring chart of the to-be-examined area and first geographical characteristic information of the returned-to-tillage forest area of the to-be-examined area; the first geographic characteristic information at least comprises position information of a returning forest zone and outline shape of the returning forest zone;
a first determining unit 402, configured to determine, for any two adjacent time periods, second geographical feature information of a forest land included in the to-be-examined area from a geographical national condition monitoring chart of the first time period; determining a first overlapping area between the returned forest area and the forest land according to the second geographic characteristic information of the forest land and the first geographic characteristic information of the returned forest area in the second time period, and marking the first overlapping area in the remote sensing image in the second time period; the second geographic characteristic information at least comprises position information of the woodland and outline shape of the woodland;
The second determining unit 403 is configured to determine, for any one of the second time periods, a second overlapping area between each of the first time periods and the returning forest area of the second time period according to the first geographical characteristic information of the second time period and the first geographical characteristic information of each of the first time periods, and identify all the second overlapping areas in the remote sensing images of the second time period, where the second time period is a time period other than the earliest time period among the plurality of history time periods, and the first time period is a time period preceding the second time period among the plurality of history time periods.
Optionally, the method further includes an identification unit 404, configured to identify, in the remote sensing image, a first overlapping area and a second overlapping area, and specifically determine location information of the first overlapping area and the second overlapping area in a geographic coordinate system, and outline shapes of the first overlapping area and the second overlapping area; according to the position information and the outline shape of the first overlapping area and the second overlapping area, respectively carrying out overlapping treatment on the first overlapping area and the second overlapping area and the remote sensing image, and determining coverage areas of the first overlapping area and the second overlapping area in the remote sensing image; and marking the coverage area in the remote sensing image by adopting a preset marking mode.
Optionally, the method further includes a third determining unit 405, configured to determine, in combination with the remote sensing image, each of the first image spots belonging to the same attribute in the first overlapping area and the second overlapping area; the attribute of the pattern spot is determined according to the surface plant characteristics of the pattern spot; calculating the area of each first image spot, merging the first image spots to other first image spots closest to the first image spots under the condition that the area of the first image spot is smaller than a first threshold value, and generating a second image spot; when the area of the first image spot is larger than the second threshold value, the first image spot is taken as a first target image spot; calculating the area of each second image spot aiming at each generated second image spot, and taking the second image spot as the first target image spot when the area of the second image spot is larger than a second threshold value; aiming at each first target image spot, combining the remote sensing image, and taking the first target image spot with the distance from the traffic road in the remote sensing image being smaller than a third threshold value as a second target image spot, wherein the second target image spot is an area to be inspected in the field; and outputting the position information of the second target pattern spot and the area of the second target pattern spot.
Optionally, the specific implementation manner of determining the second geographical feature information of the forest land included in the to-be-examined area by the first determining unit 402 is: identifying a preset forest land identifier from a geographical national condition monitoring chart; determining the outline shape of the forest land included in the area to be examined according to the forest land mark; determining the position information of the forest land according to the position identification information preset by the geographical national condition monitoring chart; and taking the outline shape of the woodland and the position information of the woodland as second geographic characteristic information of the woodland.
Optionally, the specific implementation manner of determining, by the first determining unit 402, the first overlapping area between the returning and returning areas according to the second geographical feature information of the forest land and the first geographical feature information of the returning and returning area in the second time period is: determining the coverage area of the forest land in a preset geographic coordinate system according to the position information of the forest land and the contour shape of the forest land; determining the coverage area of the returning forest area in a geographic coordinate system according to the position information of the returning forest area and the outline shape of the returning forest area; the intersection area between the coverage area of the forest land and the coverage area of the return forest area is taken as a first overlapping area.
Optionally, the specific implementation manner of the second determining unit 403 to determine the second overlapping area between the returning forest area of each first time period and the second time period according to the first geographical feature information of the second time period and the first geographical feature information of each first time period is as follows: determining coverage areas of the returned to tilling forest areas in a preset geographic coordinate system in the second time period and each first time period according to the position information and the outline shape of the returned to tilling forest areas in the second time period and each first time period; the intersection area between the coverage area of the return forest area of the second time period and the coverage area of the return forest area of each first time is taken as a second overlapping area.
The device provided in this embodiment is configured such that the first overlapping area is obtained according to second geographical feature information of the forest land combined with the first time period to-be-examined area and first geographical feature information of a return forest area of the second time period to-be-examined area, the first geographical feature information includes position information of the return forest area, a contour shape of the return forest area, and the second geographical feature information includes position information of the forest land and a contour shape of the forest land. Therefore, the obtained first overlapping area can accurately determine the area where the forest is returned to the original forest land.
In addition, the second overlapping area is obtained according to the first geographical characteristic information of the returning forest area of the to-be-examined area combined with the second time period and the first geographical characteristic information of the returning forest area of the to-be-examined area of the first time period, wherein the first time period is a time period before the second time period in a plurality of historical time periods, the first geographical characteristic information comprises the position information of the returning forest area and the outline shape of the returning forest area, and therefore the obtained second overlapping area can accurately determine the area for repeating the returning forest.
The present application further provides an electronic device 500, whose structural schematic diagram is shown in fig. 5, including: the processor 501 and the memory 502, the memory 502 stores an application program, and the processor 501 is configured to execute the application program to implement the data processing method of the present application, that is, perform the following steps:
Obtaining returning and tilling forest data of a plurality of historical time periods of a to-be-examined area; the returned plough and forest data of any one of the time periods comprises a remote sensing image of the to-be-examined area, a geographical national condition monitoring chart of the to-be-examined area and first geographical characteristic information of a returned plough and forest area of the to-be-examined area; the first geographic characteristic information at least comprises position information of the returning forest zone and outline shape of the returning forest zone;
determining second geographic feature information of the forest land included in the to-be-examined area from the geographic national condition monitoring graph of the first time period for any two adjacent time periods; determining a first overlapping area between the returned forest area and the forest land according to the second geographic characteristic information of the forest land and the first geographic characteristic information of the returned forest area in a second time period, and identifying the first overlapping area in the remote sensing image in the second time period; the second geographic characteristic information at least comprises position information of the woodland and outline shape of the woodland;
for any one of the second time periods, determining a second overlapping area between the first time period and the returning forest area of the second time period according to the first geographic characteristic information of the second time period and the first geographic characteristic information of each first time period, and identifying all second overlapping areas in the remote sensing images of the second time period, wherein the second time period is a time period except for the earliest time period in the plurality of historical time periods, and the first time period is the time period before the second time period in the plurality of historical time periods.
Optionally, the determining the second geographic feature information of the forest land included in the to-be-examined area includes:
identifying a preset forest land identifier from the geographical national condition monitoring chart; determining the outline shape of the forest land included in the to-be-examined area according to the forest land identifier;
determining the position information of the forest land according to position identification information preset by the geographical national condition monitoring chart;
and taking the outline shape of the woodland and the position information of the woodland as the second geographic characteristic information of the woodland.
Optionally, the determining a first overlapping area between the returning forest area and the forest land according to the second geographical feature information of the forest land and the first geographical feature information of the returning forest area in a second time period includes:
determining the coverage area of the forest land in a preset geographic coordinate system according to the position information of the forest land and the outline shape of the forest land;
determining a coverage area of the returning forest zone in the geographic coordinate system according to the position information of the returning forest zone and the outline shape of the returning forest zone;
An intersection area between the coverage area of the forest land and the coverage area of the return forest area is taken as the first overlap area.
Optionally, the determining, according to the first geographic characteristic information of the second time period and the first geographic characteristic information of each first time period, a second overlapping area between the returning forest area of each first time period and the second time period includes:
determining coverage areas of the returning forest areas of the second time period and the first time period in a preset geographic coordinate system according to the position information and the outline shape of the returning forest areas of the second time period and the first time period respectively;
an intersection area between the coverage area of the return forest area of the second time period and the coverage area of the return forest area of each first time is taken as the second overlapping area.
Optionally, identifying the first overlapping region and the second overlapping region in the remote sensing image includes:
determining position information of the first overlapping region and the second overlapping region in the geographic coordinate system, and outline shapes of the first overlapping region and the second overlapping region;
According to the position information of the first overlapping area and the second overlapping area and the outline shape, respectively carrying out superposition processing on the first overlapping area and the second overlapping area and the remote sensing image, and determining coverage areas of the first overlapping area and the second overlapping area in the remote sensing image;
and marking the coverage area in the remote sensing image by adopting a preset marking mode.
Optionally, after determining the first overlapping area and the second overlapping area, the method further includes:
combining the remote sensing images to determine each first image spot belonging to the same attribute in the first overlapping region and the second overlapping region; the attribute of the pattern spot is determined according to the surface plant characteristics of the pattern spot;
calculating the area of each first image spot, merging the first image spots to other first image spots closest to the first image spots under the condition that the area of the first image spots is smaller than a first threshold value, and generating a second image spot; when the first image spot area is larger than a second threshold value, taking the first image spot as a first target image spot;
calculating an area of the second image patch for each generated second image patch, and taking the second image patch as the first target image patch when the area of the second image patch is larger than the second threshold value;
For each first target image spot, combining the remote sensing image, and taking the first target image spot, of which the distance from a traffic road in the remote sensing image is smaller than a third threshold value, as a second target image spot, wherein the second target image spot is an area to be inspected in the field;
and outputting the position information of the second target image spot and the area of the second target image spot.
Optionally, the data of the returning and returning forest of the to-be-examined area in a plurality of historical time periods are vector data based on the same geographic coordinate system.
The present application also provides a computer readable storage medium having instructions stored therein which, when run on a computer, cause the computer to perform the data processing method of the present application, i.e. to perform the steps of:
obtaining returning and tilling forest data of a plurality of historical time periods of a to-be-examined area; the returned plough and forest data of any one of the time periods comprises a remote sensing image of the to-be-examined area, a geographical national condition monitoring chart of the to-be-examined area and first geographical characteristic information of a returned plough and forest area of the to-be-examined area; the first geographic characteristic information at least comprises position information of the returning forest zone and outline shape of the returning forest zone;
Determining second geographic feature information of the forest land included in the to-be-examined area from the geographic national condition monitoring graph of the first time period for any two adjacent time periods; determining a first overlapping area between the returned forest area and the forest land according to the second geographic characteristic information of the forest land and the first geographic characteristic information of the returned forest area in a second time period, and identifying the first overlapping area in the remote sensing image in the second time period; the second geographic characteristic information at least comprises position information of the woodland and outline shape of the woodland;
for any one of the second time periods, determining a second overlapping area between the first time period and the returning forest area of the second time period according to the first geographic characteristic information of the second time period and the first geographic characteristic information of each first time period, and identifying all second overlapping areas in the remote sensing images of the second time period, wherein the second time period is a time period except for the earliest time period in the plurality of historical time periods, and the first time period is the time period before the second time period in the plurality of historical time periods.
Optionally, the determining the second geographic feature information of the forest land included in the to-be-examined area includes:
identifying a preset forest land identifier from the geographical national condition monitoring chart; determining the outline shape of the forest land included in the to-be-examined area according to the forest land identifier;
determining the position information of the forest land according to position identification information preset by the geographical national condition monitoring chart;
and taking the outline shape of the woodland and the position information of the woodland as the second geographic characteristic information of the woodland.
Optionally, the determining a first overlapping area between the returning forest area and the forest land according to the second geographical feature information of the forest land and the first geographical feature information of the returning forest area in a second time period includes:
determining the coverage area of the forest land in a preset geographic coordinate system according to the position information of the forest land and the outline shape of the forest land;
determining a coverage area of the returning forest zone in the geographic coordinate system according to the position information of the returning forest zone and the outline shape of the returning forest zone;
An intersection area between the coverage area of the forest land and the coverage area of the return forest area is taken as the first overlap area.
Optionally, the determining, according to the first geographic characteristic information of the second time period and the first geographic characteristic information of each first time period, a second overlapping area between the returning forest area of each first time period and the second time period includes:
determining coverage areas of the returning forest areas of the second time period and the first time period in a preset geographic coordinate system according to the position information and the outline shape of the returning forest areas of the second time period and the first time period respectively;
an intersection area between the coverage area of the return forest area of the second time period and the coverage area of the return forest area of each first time is taken as the second overlapping area.
Optionally, identifying the first overlapping region and the second overlapping region in the remote sensing image includes:
determining position information of the first overlapping region and the second overlapping region in the geographic coordinate system, and outline shapes of the first overlapping region and the second overlapping region;
According to the position information of the first overlapping area and the second overlapping area and the outline shape, respectively carrying out superposition processing on the first overlapping area and the second overlapping area and the remote sensing image, and determining coverage areas of the first overlapping area and the second overlapping area in the remote sensing image;
and marking the coverage area in the remote sensing image by adopting a preset marking mode.
Optionally, after determining the first overlapping area and the second overlapping area, the method further includes:
combining the remote sensing images to determine each first image spot belonging to the same attribute in the first overlapping region and the second overlapping region; the attribute of the pattern spot is determined according to the surface plant characteristics of the pattern spot;
calculating the area of each first image spot, merging the first image spots to other first image spots closest to the first image spots under the condition that the area of the first image spots is smaller than a first threshold value, and generating a second image spot; when the first image spot area is larger than a second threshold value, taking the first image spot as a first target image spot;
calculating an area of the second image patch for each generated second image patch, and taking the second image patch as the first target image patch when the area of the second image patch is larger than the second threshold value;
For each first target image spot, combining the remote sensing image, and taking the first target image spot, of which the distance from a traffic road in the remote sensing image is smaller than a third threshold value, as a second target image spot, wherein the second target image spot is an area to be inspected in the field;
and outputting the position information of the second target image spot and the area of the second target image spot.
Optionally, the data of the returning and returning forest of the to-be-examined area in a plurality of historical time periods are vector data based on the same geographic coordinate system.
The functions described in the methods of the present application, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computing device readable storage medium. Based on such understanding, a portion of the embodiments of the present application that contributes to the prior art or a portion of the technical solution may be embodied in the form of a software product stored in a storage medium, comprising several instructions for causing a computing device (which may be a personal computer, a server, a mobile computing device or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, so that the same or similar parts between the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A method of data processing, comprising:
obtaining returning and tilling forest data of a plurality of historical time periods of a to-be-examined area; the returned plough and forest data of any one of the time periods comprises a remote sensing image of the to-be-examined area, a geographical national condition monitoring chart of the to-be-examined area and first geographical characteristic information of a returned plough and forest area of the to-be-examined area; the first geographic characteristic information at least comprises position information of the returning forest zone and outline shape of the returning forest zone;
Determining second geographic feature information of the forest land included in the to-be-examined area from the geographic national condition monitoring graph of the first time period for any two adjacent time periods; determining a first overlapping area between the returned forest area and the forest land according to the second geographic characteristic information of the forest land and the first geographic characteristic information of the returned forest area in a second time period, and identifying the first overlapping area in the remote sensing image in the second time period; the second geographic characteristic information at least comprises position information of the woodland and outline shape of the woodland;
for any one of the second time periods, determining a second overlapping area between the first time period and the returning forest area of the second time period according to the first geographic characteristic information of the second time period and the first geographic characteristic information of each first time period, and identifying all second overlapping areas in the remote sensing images of the second time period, wherein the second time period is a time period except for the earliest time period in the plurality of historical time periods, and the first time period is the time period before the second time period in the plurality of historical time periods.
2. The method of claim 1, wherein the determining second geographic characteristic information of a woodland included in the pending areas comprises:
identifying a preset forest land identifier from the geographical national condition monitoring chart; determining the outline shape of the forest land included in the to-be-examined area according to the forest land identifier;
determining the position information of the forest land according to position identification information preset by the geographical national condition monitoring chart;
and taking the outline shape of the woodland and the position information of the woodland as the second geographic characteristic information of the woodland.
3. The method of claim 2, wherein the determining a first overlap region between the return forest zone and the forest land based on the second geographic characteristic information of the forest land and the first geographic characteristic information of the return forest zone for a second period of time comprises:
determining the coverage area of the forest land in a preset geographic coordinate system according to the position information of the forest land and the outline shape of the forest land;
determining a coverage area of the returning forest zone in the geographic coordinate system according to the position information of the returning forest zone and the outline shape of the returning forest zone;
An intersection area between the coverage area of the forest land and the coverage area of the return forest area is taken as the first overlap area.
4. The method of claim 1, wherein the determining the second overlapping area between the return areas for each of the first time periods and the second time periods based on the first geographic characteristic information for the second time period and the first geographic characteristic information for each of the first time periods, respectively, comprises:
determining coverage areas of the returning forest areas of the second time period and the first time period in a preset geographic coordinate system according to the position information and the outline shape of the returning forest areas of the second time period and the first time period respectively;
an intersection area between the coverage area of the return forest area of the second time period and the coverage area of the return forest area of each first time is taken as the second overlapping area.
5. The method of claim 3 or 4, wherein identifying the first overlapping region and the second overlapping region in the remote sensing image comprises:
Determining position information of the first overlapping region and the second overlapping region in the geographic coordinate system, and outline shapes of the first overlapping region and the second overlapping region;
according to the position information of the first overlapping area and the second overlapping area and the outline shape, respectively carrying out superposition processing on the first overlapping area and the second overlapping area and the remote sensing image, and determining coverage areas of the first overlapping area and the second overlapping area in the remote sensing image;
and marking the coverage area in the remote sensing image by adopting a preset marking mode.
6. The method of claim 1, wherein after determining the first overlap region and the second overlap region, further comprising:
combining the remote sensing images to determine each first image spot belonging to the same attribute in the first overlapping region and the second overlapping region; the attribute of the pattern spot is determined according to the surface plant characteristics of the pattern spot;
calculating the area of each first image spot, merging the first image spots to other first image spots closest to the first image spots under the condition that the area of the first image spots is smaller than a first threshold value, and generating a second image spot; when the first image spot area is larger than a second threshold value, taking the first image spot as a first target image spot;
Calculating an area of the second image patch for each generated second image patch, and taking the second image patch as the first target image patch when the area of the second image patch is larger than the second threshold value;
for each first target image spot, combining the remote sensing image, and taking the first target image spot, of which the distance from a traffic road in the remote sensing image is smaller than a third threshold value, as a second target image spot, wherein the second target image spot is an area to be inspected in the field;
and outputting the position information of the second target image spot and the area of the second target image spot.
7. The method of claim 1, wherein the backlog payroll data for a plurality of historical time periods for the review area is vector data based on the same geographic coordinate system.
8. A data processing apparatus, comprising:
the acquisition unit is used for acquiring the returned cultivation and repayment data of the to-be-examined area in a plurality of historical time periods; the returned plough and forest data of any one of the time periods comprises a remote sensing image of the to-be-examined area, a geographical national condition monitoring chart of the to-be-examined area and first geographical characteristic information of a returned plough and forest area of the to-be-examined area; the first geographic characteristic information at least comprises position information of the returning forest zone and outline shape of the returning forest zone;
The first determining unit is used for determining second geographic feature information of the forest land included in the to-be-examined area from the geographic national condition monitoring graph of the first time period according to any two adjacent time periods; determining a first overlapping area between the returning forest zone and the forest land according to the second geographic characteristic information of the forest land and the first geographic characteristic information of the returning forest zone in the second time period, and identifying the first overlapping area in the remote sensing image in the second time period; the second geographic characteristic information at least comprises position information of the woodland and outline shape of the woodland;
a second determining unit, configured to determine, for any one of second time periods, a second overlapping area between the returning forest areas of each first time period and the second time period according to the first geographical feature information of the second time period and the first geographical feature information of each first time period, and identify all the second overlapping areas in the remote sensing image of the second time period, where the second time period is a time period other than an earliest time period among the plurality of historical time periods, and the first time period is the time period before the second time period among the plurality of historical time periods.
9. An electronic device, comprising: a processor and a memory for storing a program; the processor being operative to execute the program to implement the data processing method of any one of claims 1-7.
10. A computer readable storage medium, characterized in that the computer readable storage medium has stored therein instructions, which when run on a computer, cause the computer to perform the data processing method of any of claims 1-7.
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