CN114329978A - Fusion method and device of slope units, electronic equipment and storage medium - Google Patents
Fusion method and device of slope units, electronic equipment and storage medium Download PDFInfo
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Abstract
The embodiment of the invention discloses a fusion method and device of a slope unit, electronic equipment and a storage medium. The method comprises the following steps: constructing a target fusion dictionary for storing fusion labels of the slope units to be fused, and determining the target slope units to be fused and adjacent slope units adjacent to the target slope units based on the vector diagram of the slope units to be fused; determining whether the target slope unit and the adjacent slope unit meet a preset slope consistency condition or not based on the target characteristic information of the target slope unit and the adjacent characteristic information of the adjacent slope unit; if so, determining a fusion corresponding relation between the target slope unit and the adjacent slope unit, labeling the target slope unit and the adjacent slope unit respectively based on the fusion corresponding relation, and updating a target fusion dictionary based on the labeled labels; and fusing the target slope unit and the adjacent slope unit based on the target fusion dictionary. The embodiment of the invention better reflects the slope landform situation.
Description
Technical Field
The embodiment of the invention relates to the technical field of image processing, in particular to a fusion method and device of a slope unit, electronic equipment and a storage medium.
Background
The reasonable division of the terrain evaluation unit is a key technology for effectively evaluating regional geological landslide disasters. The slope unit as a terrain evaluation unit can effectively reflect the integral regional characteristics of landslide and improve the landslide evaluation precision of subsequent regions.
At present, due to the problems of insufficient resolution of a digital elevation model and the like, discontinuity of extracted slope direction and slope is caused, and the granularity of a slope unit division result obtained by the existing automatic slope division method is too small. The slope units with the undersize granularity cannot truly reflect the slope landform. However, no solution has been identified to overcome the above problem by improving the undersize of the slope units.
Therefore, the method for fusing the slope units is provided to solve the problem that the granularity of the result of the slope unit division is too small, and better reflect the slope landform, which is the problem to be solved urgently at present.
Disclosure of Invention
The embodiment of the invention provides a fusion method and device of a slope unit, electronic equipment and a storage medium, aiming at solving the problem that the granularity of the dividing result of the slope unit is too small and better reflecting the landform situation of the slope.
In a first aspect, an embodiment of the present invention provides a method for fusing a slope unit, including:
constructing a target fusion dictionary for storing fusion labels of slope units to be fused, and determining a target slope unit to be fused and an adjacent slope unit adjacent to the target slope unit based on a vector diagram of the slope units to be fused;
determining whether the target slope unit and the adjacent slope unit meet a preset slope consistency condition or not based on target characteristic information of the target slope unit and adjacent characteristic information of the adjacent slope unit;
if so, determining a fusion corresponding relation between the target slope unit and the adjacent slope unit, labeling the target slope unit and the adjacent slope unit respectively based on the fusion corresponding relation, and updating the target fusion dictionary based on the labeled labels;
fusing the target slope unit and the adjacent slope unit based on the target fusion dictionary.
In a second aspect, an embodiment of the present invention further provides a fusion device for a slope unit, where the fusion device includes:
the system comprises a module for determining adjacent slope units, a module for determining adjacent slope units and a module for determining target fusion dictionaries, wherein the target fusion dictionaries are used for storing fusion labels of the slope units to be fused, and the target slope units to be fused and the adjacent slope units adjacent to the target slope units are determined based on vector diagrams of the slope units to be fused;
the condition determining module is used for determining whether the target slope unit and the adjacent slope unit meet preset slope consistency conditions or not based on the target characteristic information of the target slope unit and the adjacent characteristic information of the adjacent slope unit; if the data is in accordance with the label, entering a label marking module;
a label labeling module, configured to determine a fusion correspondence between the target slope unit and the adjacent slope unit, label labeling the target slope unit and the adjacent slope unit based on the fusion correspondence, and update the target fusion dictionary based on a labeled label;
and the fusion unit module is used for fusing the target slope unit and the adjacent slope unit based on the target fusion dictionary.
In a third aspect, an embodiment of the present invention further provides an electronic device, where the electronic device includes:
one or more processors;
a storage device for storing one or more programs,
when the one or more programs are executed by the one or more processors, the one or more processors implement the ramp unit fusion method provided by any embodiment of the invention.
In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the fusion method for a slope unit provided in any embodiment of the present invention.
The slope unit fusion method provided by the embodiment of the invention comprises the steps of constructing a target fusion dictionary for storing fusion labels of slope units to be fused, and determining a target slope unit to be fused and an adjacent slope unit adjacent to the target slope unit based on a vector diagram of the slope units to be fused; determining whether the target slope unit and the adjacent slope unit meet a preset slope consistency condition or not based on the target characteristic information of the target slope unit and the adjacent characteristic information of the adjacent slope unit; if so, determining a fusion corresponding relation between the target slope unit and the adjacent slope unit, labeling the target slope unit and the adjacent slope unit respectively based on the fusion corresponding relation, and updating a target fusion dictionary based on the labeled labels; and fusing the target slope unit and the adjacent slope unit based on the target fusion dictionary. According to the embodiment of the invention, the condition of slope direction consistency is used for judging, and the adjacent slope units are fused under the condition that the fused slope units have the slope direction consistency, so that the problem that the granularity of the dividing result of the slope units is too small is solved, and the situation of the slope landform is better reflected.
In addition, the fusion device of the slope unit, the electronic equipment and the storage medium provided by the invention correspond to the method, and have the same beneficial effects.
Drawings
In order to illustrate the embodiments of the present invention more clearly, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained by those skilled in the art without inventive effort.
Fig. 1 is a flowchart of a ramp unit fusion method according to an embodiment of the present invention;
fig. 2 is a flowchart of another ramp unit fusion method according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a main fusion process of a slope unit according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a sub-fusion process of a slope unit according to an embodiment of the present invention;
fig. 5 is a structural diagram of a fusion device of a slope unit according to an embodiment of the present invention;
fig. 6 is a structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
It should be further noted that, for the convenience of description, only some but not all of the relevant aspects of the present invention are shown in the drawings. Before discussing exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart may describe the operations (or steps) as a sequential process, many of the operations can be performed in parallel, concurrently or simultaneously. In addition, the order of the operations may be re-arranged. The process may be terminated when its operations are completed, but may have additional steps not included in the figure. The processes may correspond to methods, functions, procedures, subroutines, and the like.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example one
Fig. 1 is a flowchart of a ramp unit fusion method according to an embodiment of the present invention. The method may be performed by a fusion device of the slope unit, the device may be implemented by software and/or hardware, and may be configured in a terminal and/or a server to implement the fusion method of the slope unit in the embodiment of the present invention.
As shown in fig. 1, the method of the embodiment may specifically include:
s101, constructing a target fusion dictionary used for storing fusion labels of the slope units to be fused, and determining the target slope units to be fused and adjacent slope units adjacent to the target slope units based on the vector diagram of the slope units to be fused.
In specific implementation, a digital elevation model of the slope unit to be fused and a vector diagram of the slope unit to be fused can be obtained first, wherein the vector diagram of the slope unit to be fused comprises information such as the shape, the size and the direction of each slope unit. The slope units in the vector diagram of the slope unit to be fused can be respectively and sequentially used as target slope units, and the slope units with shared edges with the target slope units are used as adjacent slope units. Each ramp unit has at least one adjacent ramp unit.
Optionally, before determining the target slope unit to be fused and the adjacent slope unit adjacent to the target slope unit, the method further includes: determining unit areas of all slope units in a vector diagram based on the slope units to be fused, and determining the slope units with the unit areas smaller than a preset area threshold value as first slope units; determining second slope units adjacent to the first slope unit, and calculating boundary lengths of the second slope units and the first slope unit; and determining the second slope unit corresponding to the longest boundary length as a third slope unit, and performing fusion operation on the first slope unit and the third slope unit.
Before the target slope unit and the adjacent slope unit are determined, in order to improve the accuracy of the determination, the vector diagram of the slope unit to be fused may be preprocessed, and the fine crushing unit with a smaller area may be pre-fused. Specifically, each slope unit in a slope unit vector diagram to be fused can be traversed, the unit area of each slope unit is determined, a fine-crushing slope unit with the unit area smaller than a preset area threshold value is determined as a first slope unit, and a slope unit is determined to be fused in each adjacent slope unit adjacent to the first slope unit.
Illustratively, a third slope unit which can be fused with the first slope unit is determined through a maximum boundary criterion. Specifically, all second slope units adjacent to the first slope unit are determined, and the boundary length of each second slope unit and each first slope unit is calculated; and determining the second slope unit with the longest boundary length as a third slope unit.
Further, if the unit area of the fused slope unit is still smaller than the preset area threshold, the fused slope unit can be fused with the adjacent slope unit again until the unit area of the fused slope unit is equal to or larger than the preset area threshold.
S102, determining whether the target slope unit and the adjacent slope unit meet a preset slope consistency condition or not based on the target characteristic information of the target slope unit and the adjacent characteristic information of the adjacent slope unit; if so, step S103 is performed.
Specifically, target characteristic information of the target slope unit is extracted, wherein the target characteristic information comprises the area, the perimeter and the slope characteristic of the target slope unit. Illustratively, a slope layer in a slope unit vector diagram to be fused can be determined through a digital elevation model, and target slope characteristics of a target slope unit in the slope layer are extracted. The slope characteristic includes a horizontal slope component and a vertical slope component. Further, adjacent characteristic information of adjacent slope units can be determined based on the digital elevation model and the slope unit vector diagram to be fused.
Further, whether the target slope unit and the adjacent slope unit can be fused or not can be judged through the slope consistency condition; when the condition of slope direction consistency is met, the characteristic that the target slope unit and the adjacent slope unit are fused does not influence the characteristic of the slope unit is shown, and fusion operation can be carried out.
Optionally, the target feature information includes a target slope feature of the target slope unit, and the adjacent feature information includes an adjacent slope feature of the adjacent slope unit; the method for determining whether the target slope unit and the adjacent slope unit meet the preset slope consistency condition or not based on the target characteristic information of the target slope unit and the adjacent characteristic information of the adjacent slope unit comprises the following steps: calculating a cosine value of a slope included angle between the target slope unit and the adjacent slope unit based on the target slope characteristic and the adjacent slope characteristic; determining whether the cosine value of the included angle of the slope direction is greater than or equal to a preset slope direction consistency threshold value; if the slope direction is greater than or equal to the preset slope direction, the target slope unit and the adjacent slope unit are determined to meet the slope direction consistency condition.
Illustratively, the cosine value of the included angle in the slope direction is calculated in the following manner: calculating a first product between horizontal slope components of the target slope unit and the adjacent slope unit, calculating a second product between vertical slope components of the target slope unit and the adjacent slope unit, summing the first product and the second product, and taking the sum as a slope included angle cosine value, wherein the larger the value, the closer the slope directions of the target slope unit and the adjacent slope unit are.
Further, a slope direction consistency threshold value can be preset, the cosine value of the calculated slope direction included angle is compared with the slope direction consistency threshold value, if the cosine value is greater than or equal to the slope direction consistency threshold value, the slope directions of the target slope unit and the adjacent slope unit are close to each other, the condition of the slope direction consistency is met, and fusion operation can be carried out; if the slope direction consistency threshold value is smaller than the slope direction consistency threshold value, the slope directions of the target slope unit and the adjacent slope unit are relatively different.
Optionally, the method further includes: and if the target slope unit and the adjacent slope unit do not meet the preset slope consistency condition, determining whether the target slope unit and the adjacent slope unit meet the preset relaxation fusion condition or not based on the target characteristic information and the adjacent characteristic information.
Further, for a target slope unit and an adjacent slope unit which do not satisfy the condition of the slope consistency, whether the condition of loose fusion is satisfied can be further determined. Illustratively, the relaxation fusion condition is that the cosine value of the included angle in the slope direction is less than or equal to a preset slope direction relaxation threshold value and is greater than or equal to a preset small-area slope direction threshold value, so that the slope unit which slightly does not meet the consistency condition in the slope direction is screened out, and the lowest requirement is met under the condition that the relaxation requirement is met, and the target slope unit and the adjacent slope unit are fused as far as possible.
Optionally, the method further includes: if the relaxation condition is met, determining the adjacent area of the adjacent slope unit, calculating a slender coefficient between the target slope unit and the adjacent slope unit, and determining whether the target slope unit and the adjacent slope unit meet any one of a preset small-area fusion condition, a slender fusion condition and an island fusion condition or not based on the adjacent area and the slender coefficient; and if any item is met, executing to determine the fusion corresponding relation between the target slope unit and the adjacent slope unit, labeling labels for the target slope unit and the adjacent slope unit respectively based on the fusion corresponding relation, and updating the target fusion dictionary based on the labeled labels.
Illustratively, the small-area fusion condition is that the adjacent area of the adjacent slope units is less than or equal to a preset small-area slope threshold; the elongate fusion condition may be that both the target elongate coefficient of the target ramp unit and the adjacent elongate coefficient of the adjacent ramp unit are greater than or equal to a preset elongate ramp threshold value. Further, a maximum adjacent edge ratio coefficient between the target slope unit and the adjacent slope unit can be determined, and the island fusion condition can be that the maximum adjacent edge ratio coefficient is greater than or equal to a preset island threshold value.
Specifically, when any one of the preset small-area fusion condition, the slender fusion condition and the island fusion condition is satisfied, it is indicated that the target slope unit and the adjacent slope unit can be fused, and the target slope unit and the adjacent slope unit are subjected to fusion operation. When the three conditions are not met, the target slope unit and the adjacent slope unit cannot be subjected to fusion operation.
S103, determining a fusion corresponding relation between the target slope unit and the adjacent slope unit, labeling the target slope unit and the adjacent slope unit respectively based on the fusion corresponding relation, and updating a target fusion dictionary based on the labeled labels.
In specific implementation, when the condition of slope consistency is met, a fusion corresponding relation can be established between a target slope unit and an adjacent slope unit, and the fusion corresponding relation is identified in a label marking mode. For example, for a target slope unit and an adjacent slope unit which satisfy a slope consistency condition, the target slope unit and the adjacent slope unit may be labeled with the same label to indicate that the target slope unit and the adjacent slope unit may perform a fusion operation. Further, the target slope unit with the label and the adjacent slope unit can be stored in the target fusion dictionary, and the target fusion dictionary is updated.
And S104, fusing the target slope unit and the adjacent slope unit based on the target fusion dictionary.
In a specific implementation, the fusion operation may be performed on each slope unit having the fusion correspondence based on the label of each slope unit described in the target fusion dictionary. For example, when labeling, the slope units having the fusion correspondence relationship are labeled according to the same label, and then the slope units having the same label may be subjected to the fusion operation at the same time, so as to complete the fusion operation between the target slope unit and the adjacent slope unit.
The slope unit fusion method provided by the embodiment of the invention comprises the steps of constructing a target fusion dictionary for storing fusion labels of slope units to be fused, and determining a target slope unit to be fused and an adjacent slope unit adjacent to the target slope unit based on a vector diagram of the slope units to be fused; determining whether the target slope unit and the adjacent slope unit meet a preset slope consistency condition or not based on the target characteristic information of the target slope unit and the adjacent characteristic information of the adjacent slope unit; if so, determining a fusion corresponding relation between the target slope unit and the adjacent slope unit, labeling the target slope unit and the adjacent slope unit respectively based on the fusion corresponding relation, and updating a target fusion dictionary based on the labeled labels; and fusing the target slope unit and the adjacent slope unit based on the target fusion dictionary. According to the embodiment of the invention, the condition of slope direction consistency is used for judging, and the adjacent slope units are fused under the condition that the fused slope units have the slope direction consistency, so that the problem that the granularity of the dividing result of the slope units is too small is solved, and the situation of the slope landform is better reflected.
Example two
Fig. 2 is a flowchart of another ramp unit fusion method according to an embodiment of the present invention. The present embodiment is optimized based on the above technical solutions. Optionally, after fusing the target slope unit and the adjacent slope unit, the method further includes: determining the current iteration times, and determining the number trend of the current slope units based on the fusion result of the slope units; determining whether the current iteration process reaches an iteration stopping condition or not based on the current iteration times and the number trend; and if the iteration stopping condition is not met, repeatedly determining the target slope unit to be fused and the adjacent slope unit adjacent to the target slope unit. The same or corresponding terms as those in the above embodiments are not explained in detail herein.
As shown in fig. 2, the method of the embodiment may specifically include:
s201, constructing a target fusion dictionary used for storing fusion labels of the slope units to be fused, and determining the target slope units to be fused and adjacent slope units adjacent to the target slope units based on the vector diagram of the slope units to be fused.
S202, determining whether the target slope unit and the adjacent slope unit meet a preset slope consistency condition or not based on the target characteristic information of the target slope unit and the adjacent characteristic information of the adjacent slope unit; if so, step S203 is executed.
S203, determining a fusion corresponding relation between the target slope unit and the adjacent slope unit, labeling the target slope unit and the adjacent slope unit respectively based on the fusion corresponding relation, and updating the target fusion dictionary based on the labeled labels.
And S204, fusing the target slope unit and the adjacent slope unit based on the target fusion dictionary.
S205, determining the current iteration number, determining the number trend of the current slope unit based on the fusion result of the slope units, and determining whether the current iteration process reaches the condition of stopping iteration based on the current iteration number and the number trend; if the stop iteration condition is not reached, step S206 is executed.
In specific implementation, in order to ensure that all slope units in the slope vector diagram to be fused can be fused comprehensively and accurately, the slope units in the slope vector diagram to be fused can be traversed for multiple times in an iterative manner. Prior to iteration, the current number of iterations and the number trend of the current ramp cell may be determined.
Specifically, the fusion result after each iteration process is finished can be recorded, the number of the slope units remaining after each iteration process is determined based on the fusion result, and the number trend is determined based on the number of the slope units. For example, if the number of the slope units in each iteration process is less and less, the number trend is shown as a convergence trend, and the slope units can be further fused.
For example, it may be determined whether the current iteration process reaches the stop iteration condition based on the current iteration number and the number trend. The iteration stopping condition comprises that the current iteration number is smaller than the preset maximum fusion number and/or the number trend is a convergence trend.
And S206, repeatedly executing the step of determining the target slope unit to be fused and the adjacent slope unit adjacent to the target slope unit.
In specific implementation, if the iteration stopping condition is not met, the operation of determining the target slope unit to be fused and the adjacent slope unit adjacent to the target slope unit can be repeatedly executed, and whether the target slope unit and the adjacent slope unit meet the preset slope consistency condition or not is determined based on the target characteristic information of the target slope unit and the adjacent characteristic information of the adjacent slope unit until the iteration stopping condition is met.
Further, if the iteration stopping condition is reached, a slope fusion vector diagram is generated and output based on the current fusion result. Illustratively, the slope fusion vector diagram includes information of the shape, slope direction and the like of the fused slope unit.
The embodiment of the invention can perform fusion operation on the slope units to be fused in an iteration mode and set the condition of stopping iteration, thereby fully and comprehensively fusing the fusible slope units on the premise of ensuring the effect of the fused slope units, improving the problem of undersize granularity of the dividing result of the slope units and better reflecting the landform condition of the slope.
EXAMPLE III
In order to further make clear the technical solution of the method, the following uses a situation of using the fused slope unit to perform landslide early warning assessment as an application scenario to explain in detail, and fig. 3 is a schematic diagram of a main fusion process of the slope unit provided in the embodiment of the present invention, as shown in fig. 3, including the following steps:
1. inputting a digital high-range model with a maximum fusion number nfushAnd fusing a slope unit vector diagram.
2. Pre-fusing a slope unit with a tiny area and a small size in a slope unit vector diagram to be fused: traversing each slope unit in the slope unit vector diagram to be fused, calculating the area of each slope unit, traversing all adjacent slope units of the slope unit if the area is smaller than a preset area threshold value, and calculating the adjacent boundary length between each adjacent slope unit; and fusing the adjacent slope unit with the maximum adjacent boundary length with the slope unit according to the maximum boundary criterion.
3. Initializing variables: and setting a slope fusion vector diagram, the iteration times are i, and the number list of the constructed slope units is f [ ].
4. Judging whether i is less than nfushAnd f < -1 [ -1 ]]＞f[-2]；f[-1]Represents the number of ramp units in the list of numbers generated in the last iteration, f-2]And (4) representing the quantity of the slope units in the quantity list generated by the last iteration, namely judging whether the current iteration number is smaller than the maximum fusion number input in advance, wherein the quantity of the slope units after the iteration is in a decreasing trend, and if the quantity of the slope units after the iteration is not smaller than the maximum fusion number, skipping to execute the step 8. If yes, executing step 5 and entering an iterative process.
5. Constructing a slope unit data table:
5.1, acquiring each fusion result, and extracting a slope layer based on the input digital elevation model; determining the area and the perimeter of a slope unit and unit information of the slope unit adjacent to the slope unit, and calculating a horizontal slope component and a vertical slope component of each slope unit through a slope layer;
5.2, constructing a vector graph database for storing vector graph information of the slope fusion vector graph;
5.3, constructing a data characteristic table to store the area, the perimeter and the slope characteristics of the target slope unit which is determined whether to be fused or not currently, wherein the slope characteristics can be a horizontal slope component and a vertical slope component of the slope unit; further, an adjacent feature table may be constructed for holding unit information such as the length of each edge of an adjacent slope unit of the target slope unit, a label of a slope unit adjacent to the adjacent slope unit, and the like.
5.4, constructing a table type (dataframe) ramp unit data table, and extracting data in the data feature table into the ramp unit data table; and constructing an adjacent slope unit structure and a boundary length structure of a dictionary (fact) type data structure, and correspondingly extracting data in the neighbor feature table into the adjacent slope unit structure and the boundary length structure.
6. Fig. 4 is a schematic diagram of a sub-fusion process of a slope unit according to an embodiment of the present invention; as shown in fig. 4, the ramp cell fusion process is as follows:
6.1, inputting parameters, wherein the parameters comprise: the vector diagram to be fused, the slope unit data table, the adjacent slope unit structure, the boundary length structure and the slope consistency threshold th are generated at presentaspSlope loosening threshold thsl_aspIslanding threshold thisletMaximum fusion area threshold thareaSmall area slope threshold ths_aspElongated slope threshold thslender。
6.2 setting a slope unit fusion dictionary isdeal{ }, and initialize; the dictionary is used for storing the fusion id (Identity document) corresponding to each slope unit, and the fusion rule is that the slope units with the same fusion id can perform fusion operation.
6.3, traversing the slope unit data table according to the ascending order of the areas to determine a target slope unit to be fused currently; and acquiring information such as the area, the perimeter, the slope direction and the gradient of the target slope unit.
6.4 if the current isdeal{ }! Null and areak＞thareaIf the slope unit to be fused does not exist in the current slope unit fusion dictionary and the area of the target slope unit to be fused is larger than the maximum fusion area threshold value, returning to execute the step 6.3; areakRepresenting the area of the target ramp cell currently to be fused.
6.5, traversing all adjacent slope units of the target slope unit to obtain the unit information of each adjacent slope unit.
6.6, calculating the slope consistency index hash of the target slope unit and the adjacent slope unitsis(ii) a The slope direction consistency index is the sum of the product of the horizontal slope direction components of the target slope unit and the adjacent slope unit and the product of the vertical slope direction components, the calculated value is the cosine value of the included angle between the two slope direction units, and the larger the value is, the closer the slope direction is represented.
6.7, judging whether the target slope unit and the adjacent slope unit meet the slope fusion condition, wherein the slope fusion condition can be fushsis≥thasp(ii) a If yes, executing a ramp unit fusion step 6.8; otherwise, judging whether the loose fusion condition is met, wherein the loose fusion condition can be thasp＞fushsis≥thsl_asp(ii) a If the loose fusion condition is not met, returning to execute the step 6.5, and recalculating the slope consistency between other adjacent slope units and the target slope unit until all adjacent slope units of the target slope unit are traversed. If the relaxed fusion condition is satisfied, step 6.8 is performed.
6.8, judging whether any one of a small-area fusion condition, a slender fusion condition and an island fusion condition is met; obtaining area of adjacent slope unitjAnd calculating the slen coefficient of the target slope unitkCalculating the slen of the adjacent slope unitjThe maximum adjacent edge ratio coefficient ratio is determined, and then the detection processes of the small-area fusion condition, the slender fusion condition and the island fusion condition are respectively carried out;
illustratively, the small-area fusion condition may be areaj≤ths_asp(ii) a The elongate fusion condition may be slenk,slenj≥thslender(ii) a The island fusion condition can be that ratio is more than or equal to thislet。
If any one of the three conditions is satisfied, the fusion operation of the target slope unit and the adjacent slope unit can be executed, that is, step 6.9; otherwise, the step 6.5 is executed in a returning way.
6.9, updating the fusion id of the target slope unit meeting the fusion condition to be n, and updating the fusion id of the slope unit in the slope unit fusion dictionary based on the updated fusion id.
6.10, determining the current fusion id of the adjacent slope unit, determining all slope units which are the same as the current fusion id of the adjacent slope unit, and updating the fusion ids of all slope units and the adjacent slope units to n, so that the slope units which can be fused can be determined as much as possible in the process of one iteration in a continuous fusion mode, the iteration times are reduced, and the fusion efficiency is improved.
6.11, judging whether the traversal of each slope unit in the slope unit data table is finished, if the traversal is not finished, returning to the step 6.3, and determining the target slope unit to be fused to traverse again in the slope unit data table according to the ascending order of the areas until all the slope units are traversed.
6.12, creating a fusion identification data table, wherein the fusion identification data table comprises fusion ids before updating and fusion ids after updating of the slope units; and performing fusion operation on the slope unit corresponding to the updated fusion id, and updating the vector diagram of the slope unit to be fused.
7. And 6, calculating the number of the slope units in the current slope unit vector diagram to be fused according to the slope unit vector diagram to be fused obtained in the step 6, adding the number into the number list, and returning to execute the step 4.
8. Generating a slope fusion vector diagram for outputting based on the fused slope list; the slope fusion vector diagram comprises information such as the shape of the fused slope unit.
The embodiment of the invention can perform fusion operation on the slope unit to be fused in an iterative mode, can perform preprocessing aiming at the fragment slope unit caused by the image resolution error, and avoids influencing the fusion process; therefore, the fusion of the slope units which can be fused can be fully and comprehensively carried out on the premise of ensuring the effect of the slope units after fusion, and the slope landform condition can be better reflected.
Example four
Fig. 5 is a structural diagram of a ramp unit fusion device according to an embodiment of the present invention, where the ramp unit fusion device is used to execute the ramp unit fusion method according to any of the above embodiments. The device and the ramp unit fusion method of each embodiment belong to the same inventive concept, and details which are not described in detail in the embodiment of the ramp unit fusion device may refer to the embodiment of the ramp unit fusion method. The device may specifically comprise:
the adjacent slope unit determining module 10 is used for constructing a target fusion dictionary used for storing fusion labels of slope units to be fused, and determining a target slope unit to be fused and an adjacent slope unit adjacent to the target slope unit based on a vector diagram of the slope units to be fused;
a condition determining module 11, configured to determine whether the target slope unit and the adjacent slope unit meet a preset slope consistency condition based on the target feature information of the target slope unit and the adjacent feature information of the adjacent slope unit; if the data is in accordance with the label, entering a label marking module;
the label labeling module 12 is configured to determine a fusion correspondence between a target slope unit and an adjacent slope unit, label labeling may be performed on the target slope unit and the adjacent slope unit based on the fusion correspondence, and a target fusion dictionary is updated based on a labeled label;
and the fusion unit module 13 is configured to fuse the target slope unit and the adjacent slope unit based on the target fusion dictionary.
On the basis of any optional technical scheme in the embodiment of the present invention, optionally, the target feature information includes a target slope feature of the target slope unit, and the adjacent feature information includes an adjacent slope feature of the adjacent slope unit; wherein, determining whether the condition module 11 is met comprises:
the cosine value calculating unit is used for calculating cosine values of the slope included angles of the target slope unit and the adjacent slope units based on the target slope characteristics and the adjacent slope characteristics; determining whether the cosine value of the included angle of the slope direction is greater than or equal to a preset slope direction consistency threshold value; if the slope direction is greater than or equal to the preset slope direction, the target slope unit and the adjacent slope unit are determined to meet the slope direction consistency condition.
On the basis of any optional technical solution in the embodiment of the present invention, optionally, the apparatus further includes:
and the relaxation judging module is used for determining whether the target slope unit and the adjacent slope unit meet the preset relaxation fusion condition based on the target characteristic information and the adjacent characteristic information if the target slope unit and the adjacent slope unit do not meet the preset relaxation fusion condition.
On the basis of any optional technical solution in the embodiment of the present invention, optionally, the apparatus further includes:
the updating target fusion dictionary module is used for determining the adjacent area of the adjacent slope unit if the relaxation fusion condition is met, calculating the slender coefficient between the target slope unit and the adjacent slope unit, and determining whether the target slope unit and the adjacent slope unit meet any one of the preset small-area fusion condition, the slender fusion condition and the island fusion condition or not based on the adjacent area and the slender coefficient; and if any item is met, executing to determine the fusion corresponding relation between the target slope unit and the adjacent slope unit, labeling labels for the target slope unit and the adjacent slope unit respectively based on the fusion corresponding relation, and updating the target fusion dictionary based on the labeled labels.
On the basis of any optional technical solution in the embodiment of the present invention, optionally, the apparatus further includes:
the iteration number determining module is used for determining the current iteration number after fusing the target slope unit and the adjacent slope unit, and determining the number trend of the current slope unit based on the fusion result of the slope units; determining whether the current iteration process reaches an iteration stopping condition or not based on the current iteration times and the number trend; the iteration stopping condition comprises that the current iteration number reaches a preset number threshold or the number trend is not a reduction trend; and if the iteration stopping condition is not met, repeatedly determining the target slope unit to be fused and the adjacent slope unit adjacent to the target slope unit.
On the basis of any optional technical solution in the embodiment of the present invention, optionally, the apparatus further includes:
and the output module is used for generating and outputting a slope fusion vector diagram based on the current fusion result if the iteration stopping condition is reached.
On the basis of any optional technical solution in the embodiment of the present invention, optionally, the apparatus further includes:
the device comprises a unit area determining module, a unit area determining module and a unit area determining module, wherein the unit area determining module is used for determining the unit area of each slope unit in a vector diagram based on a slope unit to be fused before a target slope unit to be fused and an adjacent slope unit adjacent to the target slope unit, and determining the slope unit with the unit area smaller than a preset area threshold value as a first slope unit; determining second slope units adjacent to the first slope unit, and calculating boundary lengths of the second slope units and the first slope unit; and determining the second slope unit corresponding to the longest boundary length as a third slope unit, and performing fusion operation on the first slope unit and the third slope unit.
The fusion device of the slope unit provided by the embodiment of the invention can execute the following method: constructing a target fusion dictionary for storing fusion labels of the slope units to be fused, and determining the target slope units to be fused and adjacent slope units adjacent to the target slope units based on the vector diagram of the slope units to be fused; determining whether the target slope unit and the adjacent slope unit meet a preset slope consistency condition or not based on the target characteristic information of the target slope unit and the adjacent characteristic information of the adjacent slope unit; if so, determining a fusion corresponding relation between the target slope unit and the adjacent slope unit, labeling the target slope unit and the adjacent slope unit respectively based on the fusion corresponding relation, and updating a target fusion dictionary based on the labeled labels; and fusing the target slope unit and the adjacent slope unit based on the target fusion dictionary. According to the embodiment of the invention, the condition of slope direction consistency is used for judging, and the adjacent slope units are fused under the condition that the fused slope units have the slope direction consistency, so that the problem that the granularity of the dividing result of the slope units is too small is solved, and the situation of the slope landform is better reflected.
It should be noted that, in the embodiment of the fusion device of the slope unit, the units and modules included in the fusion device are only divided according to functional logic, but are not limited to the above division, as long as the corresponding functions can be implemented; in addition, specific names of the functional units are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention.
EXAMPLE five
Fig. 6 is a structural diagram of an electronic device according to an embodiment of the present invention. FIG. 6 illustrates a block diagram of an exemplary electronic device 20 suitable for use in implementing embodiments of the present invention. The illustrated electronic device 20 is merely an example and should not be used to limit the functionality or scope of embodiments of the present invention.
As shown in fig. 6, the electronic device 20 is embodied in the form of a general purpose computing device. The components of the electronic device 20 may include, but are not limited to: one or more processors or processing units 201, a system memory 202, and a bus 203 that couples the various system components (including the system memory 202 and the processing unit 201).
The system memory 202 may include computer system readable media in the form of volatile memory, such as Random Access Memory (RAM)204 and/or cache memory 205. The electronic device 20 may further include other removable/non-removable, volatile/nonvolatile computer system storage media. By way of example only, the storage system 206 may be used to read from and write to non-removable, nonvolatile magnetic media. A magnetic disk drive for reading from and writing to a removable, nonvolatile magnetic disk (e.g., a "floppy disk") and an optical disk drive for reading from or writing to a removable, nonvolatile optical disk (e.g., a CD-ROM, DVD-ROM, or other optical media) may be provided. In these cases, each drive may be connected to bus 203 by one or more data media interfaces. Memory 202 may include at least one program product having a set (e.g., at least one) of program modules that are configured to carry out the functions of embodiments of the invention.
A program/utility 208 having a set (at least one) of program modules 207 may be stored, for example, in memory 202, such program modules 207 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each of which examples or some combination thereof may comprise an implementation of a network environment. Program modules 207 generally perform the functions and/or methodologies of embodiments of the present invention as described herein.
The electronic device 20 may also communicate with one or more external devices 209 (e.g., keyboard, pointing device, display 210, etc.), with one or more devices that enable a user to interact with the electronic device 20, and/or with any devices (e.g., network card, modem, etc.) that enable the electronic device 20 to communicate with one or more other computing devices. Such communication may occur via input/output (I/O) interfaces 211. Also, the electronic device 20 may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the Internet) via the network adapter 212. As shown, the network adapter 212 communicates with other modules of the electronic device 20 over the bus 203. It should be understood that other hardware and/or software modules may be used in conjunction with electronic device 20, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, among others.
The processing unit 201 executes various functional applications and data processing by running a program stored in the system memory 202.
The electronic equipment provided by the invention can realize the following method: constructing a target fusion dictionary for storing fusion labels of the slope units to be fused, and determining the target slope units to be fused and adjacent slope units adjacent to the target slope units based on the vector diagram of the slope units to be fused; determining whether the target slope unit and the adjacent slope unit meet a preset slope consistency condition or not based on the target characteristic information of the target slope unit and the adjacent characteristic information of the adjacent slope unit; if so, determining a fusion corresponding relation between the target slope unit and the adjacent slope unit, labeling the target slope unit and the adjacent slope unit respectively based on the fusion corresponding relation, and updating a target fusion dictionary based on the labeled labels; and fusing the target slope unit and the adjacent slope unit based on the target fusion dictionary. According to the embodiment of the invention, the condition of slope direction consistency is used for judging, and the adjacent slope units are fused under the condition that the fused slope units have the slope direction consistency, so that the problem that the granularity of the dividing result of the slope units is too small is solved, and the situation of the slope landform is better reflected.
EXAMPLE six
An embodiment of the present invention provides a storage medium containing computer-executable instructions, which when executed by a computer processor, perform a method of fusion of ramp units, the method comprising:
constructing a target fusion dictionary for storing fusion labels of the slope units to be fused, and determining the target slope units to be fused and adjacent slope units adjacent to the target slope units based on the vector diagram of the slope units to be fused; determining whether the target slope unit and the adjacent slope unit meet a preset slope consistency condition or not based on the target characteristic information of the target slope unit and the adjacent characteristic information of the adjacent slope unit; if so, determining a fusion corresponding relation between the target slope unit and the adjacent slope unit, labeling the target slope unit and the adjacent slope unit respectively based on the fusion corresponding relation, and updating a target fusion dictionary based on the labeled labels; and fusing the target slope unit and the adjacent slope unit based on the target fusion dictionary. According to the embodiment of the invention, the condition of slope direction consistency is used for judging, and the adjacent slope units are fused under the condition that the fused slope units have the slope direction consistency, so that the problem that the granularity of the dividing result of the slope units is too small is solved, and the situation of the slope landform is better reflected.
Of course, the storage medium provided by the embodiment of the present invention contains computer-executable instructions, and the computer-executable instructions are not limited to the method operations described above, and may also perform related operations in the fusion method of the ramp unit provided by any embodiment of the present invention.
Computer storage media for embodiments of the invention may employ any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations for embodiments of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A method for fusing ramp units, comprising:
constructing a target fusion dictionary for storing fusion labels of slope units to be fused, and determining a target slope unit to be fused and an adjacent slope unit adjacent to the target slope unit based on a vector diagram of the slope units to be fused;
determining whether the target slope unit and the adjacent slope unit meet a preset slope consistency condition or not based on target characteristic information of the target slope unit and adjacent characteristic information of the adjacent slope unit;
if so, determining a fusion corresponding relation between the target slope unit and the adjacent slope unit, labeling the target slope unit and the adjacent slope unit respectively based on the fusion corresponding relation, and updating the target fusion dictionary based on the labeled labels;
fusing the target slope unit and the adjacent slope unit based on the target fusion dictionary.
2. The method of claim 1, wherein the target feature information includes a target slope feature of the target slope unit, and the adjacent feature information includes an adjacent slope feature of the adjacent slope unit; wherein the content of the first and second substances,
the determining whether the target slope unit and the adjacent slope unit meet a preset slope consistency condition based on the target characteristic information of the target slope unit and the adjacent characteristic information of the adjacent slope unit comprises:
calculating a cosine value of a slope angle between the target slope unit and the adjacent slope unit based on the target slope characteristic and the adjacent slope characteristic;
determining whether the cosine value of the included angle of the slope direction is greater than or equal to a preset slope direction consistency threshold value;
if so, determining that the target slope unit and the adjacent slope unit meet the slope consistency condition.
3. The method of claim 1, further comprising:
and if not, determining whether the target slope unit and the adjacent slope unit meet a preset relaxation fusion condition or not based on the target characteristic information and the adjacent characteristic information.
4. The method of claim 3, further comprising:
if the loose fusion condition is met, determining the adjacent area of the adjacent slope unit, calculating a slender coefficient between the target slope unit and the adjacent slope unit, and determining whether the target slope unit and the adjacent slope unit meet any one of a preset small-area fusion condition, a slender fusion condition and an island fusion condition or not based on the adjacent area and the slender coefficient;
and if any item is met, executing to determine the fusion corresponding relation between the target slope unit and the adjacent slope unit, labeling labels for the target slope unit and the adjacent slope unit respectively based on the fusion corresponding relation, and updating the target fusion dictionary based on the labeled labels.
5. The method of claim 1, further comprising, after said fusing the target ramp unit and the adjacent ramp unit:
determining the current iteration times, and determining the number trend of the current slope units based on the fusion result of the slope units;
determining whether the current iteration process reaches an iteration stopping condition or not based on the current iteration times and the number trend; wherein the iteration stopping condition comprises that the current iteration number reaches a preset number threshold or the number trend is not a reduction trend;
and if the iteration stopping condition is not met, repeatedly executing the step of determining the target slope unit to be fused and the adjacent slope unit adjacent to the target slope unit.
6. The method of claim 5, further comprising:
and if the iteration stopping condition is reached, generating a slope fusion vector diagram based on the current fusion result and outputting the slope fusion vector diagram.
7. The method of claim 1, wherein prior to determining a target ramp unit to be fused and an adjacent ramp unit adjacent to the target ramp unit, further comprising:
determining the unit area of each slope unit in the vector diagram based on the slope units to be fused, and determining the slope units with the unit areas smaller than a preset area threshold value as first slope units;
determining second slope units adjacent to the first slope unit, and calculating boundary lengths of the second slope units and the first slope unit;
and determining a second slope unit corresponding to the longest boundary length as a third slope unit, and performing fusion operation on the first slope unit and the third slope unit.
8. A ramp unit fusion device, comprising:
the system comprises a module for determining adjacent slope units, a module for determining adjacent slope units and a module for determining target fusion dictionaries, wherein the target fusion dictionaries are used for storing fusion labels of the slope units to be fused, and the target slope units to be fused and the adjacent slope units adjacent to the target slope units are determined based on vector diagrams of the slope units to be fused;
the condition determining module is used for determining whether the target slope unit and the adjacent slope unit meet preset slope consistency conditions or not based on the target characteristic information of the target slope unit and the adjacent characteristic information of the adjacent slope unit; if the data is in accordance with the label, entering a label marking module;
a label labeling module, configured to determine a fusion correspondence between the target slope unit and the adjacent slope unit, label labeling the target slope unit and the adjacent slope unit based on the fusion correspondence, and update the target fusion dictionary based on a labeled label;
and the fusion unit module is used for fusing the target slope unit and the adjacent slope unit based on the target fusion dictionary.
9. An electronic device, comprising:
one or more processors;
a memory for storing one or more programs;
when executed by the one or more processors, cause the one or more processors to implement the ramp unit fusion method of any one of claims 1-7.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out a method of fusion of ramp units according to any one of claims 1 to 7.
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| CN117828003B (en) * | 2024-03-05 | 2024-06-04 | 中国铁路设计集团有限公司 | Method and system for discriminating mud-rock flow disasters on vegetation covered slope |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117828003B (en) * | 2024-03-05 | 2024-06-04 | 中国铁路设计集团有限公司 | Method and system for discriminating mud-rock flow disasters on vegetation covered slope |
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