CN113420670A - Environment-friendly supervision method for changing power transmission and transformation line migration based on high-resolution remote sensing - Google Patents
Environment-friendly supervision method for changing power transmission and transformation line migration based on high-resolution remote sensing Download PDFInfo
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Abstract
The invention relates to a high-resolution remote sensing-based environmental water conservation supervision method for power transmission and transformation line relocation and transformation. The method relies on a remote sensing image T before constructionFront sideAnd remote sensing image T in constructionInAfter preprocessing such as atmospheric correction, geometric correction, image fusion, image registration and the like, obtaining an image matched with a power transmission and transformation transfer and transformation route, classifying different typical ground objects based on a maximum likelihood method, classifying the extracted result construction disturbance range by using the construction disturbance range and the shape information of a construction road, checking and correcting the extracted result by using a human-computer interaction visual interpretation method and a remote sensing image before construction, and calculating attributes such as construction disturbance area, construction road length and width.
Description
Technical Field
The invention relates to a high-resolution remote sensing-based environmental water conservation supervision method for power transmission and transformation line relocation and transformation.
Background
In the process of moving and modifying the electric power project, pole towers, spoil areas, a large number of construction sidewalks, stock yards, spoil areas and other engineering grounds excavated in a dotted manner along the transmission line, and the remaining stock yards, spoil areas and other engineering grounds inevitably affect the surrounding ecological environment of the line. The existing power transmission and transformation engineering transfer line environment water conservation supervision means mainly comprises: 1) in the traditional manual measurement, the checking needs to be performed from the power transmission and transformation starting position to the end position, and the checking content includes whether buildings such as houses and plants and the like existing in the past are removed or not and whether buildings such as newly added houses and plants and the like exist in the safety distance of the power transmission and transformation project or not. Because the coverage range of the power grid in operation is wide, and the power grid is continuously built with subsequent power grid engineering, the manual on-site investigation has the defects of inaccurate data, long time period, high economic cost and the like, and is no longer suitable for the current power grid environment; 2) the remote sensing manual interpretation technology has high accuracy in the identification of construction disturbance area of power transmission and transformation changing line construction and construction road and environmental protection measures, but has low manual interpretation speed due to the large number of line towers, wide distribution and the like.
The prior art mainly has the following defects:
1. the power transmission and transformation has the advantages of long line length, large number of towers, wide distribution, complex topography along the line, difficult manual on-site inspection, long inspection period, low efficiency, inaccurate data, omission and the like.
2. The remote sensing image manual interpretation method used for the environmental water conservation monitoring of the power transmission and transformation transfer line has the defects of large interpretation workload, low working efficiency, large artificial subjectivity and the like.
Disclosure of Invention
The invention aims to provide a method for supervising the relocation and change of an electric transmission and transformation line based on high-resolution remote sensing, which comprises the steps of firstly identifying land features by using a pixel-based maximum likelihood method based on expression forms of spectral information, colors, textures and the like of different typical land features in a remote sensing image, such as construction disturbance area, construction road, environmental water conservation measures and the like in the electric transmission and transformation relocation and change line, then accurately extracting the construction disturbance area and the construction road based on the construction disturbance area and the construction road shape, and finally correcting the automatically extracted relocation and change line environmental water conservation information by using a remote sensing image before construction and a human-computer interaction visual interpretation method and acquiring attributes such as the construction disturbance area, the construction road length width and the like.
In order to achieve the purpose, the technical scheme of the invention is as follows: power transmission and transformation line transfer ring based on high-resolution remote sensingThe water conservation supervision method comprises the steps of firstly carrying out remote sensing on an image T before constructionFront sideAnd remote sensing image T in constructionInPreprocessing to obtain an image matched with the power transmission and transformation transfer line; then, performing primary classification on different typical ground objects in the preprocessed image based on a maximum likelihood method, and reclassifying the construction disturbance range extracted by the primary classification by using the construction disturbance range and the shape information of the construction road; and finally, checking and correcting the extracted result by using a human-computer interaction visual interpretation method and the remote sensing image before construction, and calculating the attributes including construction disturbance area and construction road length width.
In an embodiment of the invention, the remote sensing image T before constructionFront sideAnd remote sensing image T in constructionInThe pretreatment mode is as follows: based on the point location coordinates of the power transmission and transformation transfer line tower, high-resolution remote sensing images are obtained through a network, and then images matched with the power transmission and transformation transfer line tower are obtained through processing including atmospheric correction, geometric correction, image fusion and image registration.
In an embodiment of the invention, the preprocessed remote sensing image T in constructionInThe primary classification mode is as follows:
step 1.1, remote sensing image T in construction based on power transmission and transformation migration and line change construction disturbance area, construction road and environmental protection measuresInThe above expression forms are used for establishing sample interesting regions of different ground objects, and each type of sample is subjected to remote sensing image T in the whole construction processInThe upper distribution is uniform, and the information is complete;
step 1.2, selecting a maximum classification method to perform construction remote sensing image TInClassifying;
and step 1.3, converting the classification result grid data into vector data, deleting unnecessary vector information, and identifying a construction disturbance range and an environmental water conservation measure.
In an embodiment of the present invention, the method for reclassifying the initially classified and extracted construction disturbance range by using the construction disturbance range and the shape information of the construction road includes:
step 2.1, tracking the edge profile of any one construction disturbance range to obtain a closed curve CDEFC; c is the starting point and the end point of the closed curve, E is the middle point of the curve, and D and F are arbitrary points of the left half part and the right half part of the curve respectively;
step 2.2, connecting C, E two points, and respectively performing piecewise linear fitting on the arc segments CDE and EFC; for CDE, the sum of the distances from all points on the arc segment to the straight line CE is calculated
If the arc segment has m edge points in total
H is in a value range of 2.0-3.0, a point with the largest distance from the straight line CE is recorded and recorded as a peak G, then the two arc line segments of CG and GE are subjected to linear fitting respectively, and corresponding peaks are recorded until all peaks on the curve are found;
step 2.3, finding two vertexes C adjacent to the left and right of the point C1、C2Two adjacent vertexes E on the left and right of point E1、E2Respectively aligning the arc line segments C by the method of step S4.21C2、E1E2Performing straight line segment fitting and finding a corresponding vertex;
and 2.4, finding curve inflection points from the curve peaks, and judging the shape of the closed curve according to the number, distance and angle of the inflection points.
In an embodiment of the present invention, the specific implementation steps of step 2.4 are as follows:
step 2.4.1, establishing a rectangular coordinate system XOY by taking the central point of the closed curve as an origin O (0, 0);
step 2.4.2, selecting any five vertexes P (X) on the curveP，YP)、Q(XQ，YQ)、I(XI，YI)、J(XJ，YJ)、S(XS，YS) Slope K of the straight line PQPQComprises the following steps:
if the slope of the straight line between two adjacent points satisfies the following formula, the point I is the inflection point of the curve
(KPQ-KQI)×(KIJ-KJS)＜0
Wherein KQI、KIJ、KJSStraight lines QI, IJ and JS slope respectively;
step 2.4.3, starting from the starting point of the closed curve, traversing the vertex anticlockwise, and finding all inflection points in the curve;
step 2.4.4, calculating the lengths and included angles of straight lines between adjacent inflection points, wherein if the number of the inflection points is more than or equal to 4 and the length difference between two adjacent straight lines of the curve is not large, the curve is a construction disturbance area; if the number of the inflection points is 4 points and the length difference between two adjacent straight lines is large, the curve is a construction road.
In an embodiment of the present invention, the specific way of calculating the attributes including the construction disturbance area and the construction road length width by using the human-computer interaction visual interpretation method and the remote sensing image before construction to check and correct the extraction result is as follows:
3.1, correcting and automatically extracting construction disturbance area, construction road and environmental protection measure extraction results by using a human-computer interaction visual interpretation method and a pre-construction image, and removing the existing construction road before construction;
and 3.2, carrying out attribute statistics on the extracted result by utilizing a GIS technology, wherein the attribute statistics comprises the attributes of construction disturbance area and construction road length width, and analyzing the overall disturbance condition and compliance.
Compared with the prior art, the invention has the following beneficial effects:
1. compared with manual on-site inspection, the method reduces personnel investment, lowers economic cost, and comprehensively masters the environmental water-protection information of the whole relocation and change line.
2. Compared with the remote sensing image manual interpretation, the invention improves the interpretation speed and the working efficiency.
Drawings
FIG. 1 is a flow chart of the method of the present invention.
FIG. 2 is a schematic diagram illustrating the reclassification of the construction disturbance range based on the construction disturbance area and the shape information of the construction road.
Detailed Description
The technical scheme of the invention is specifically explained below with reference to the accompanying drawings.
The invention relates to a high-resolution remote sensing based environmental water conservation supervision method for power transmission and transformation line transfer, which comprises the steps of firstly carrying out remote sensing on a T image before constructionFront sideAnd remote sensing image T in constructionInPreprocessing to obtain an image matched with the power transmission and transformation transfer line; then, performing primary classification on different typical ground objects in the preprocessed image based on a maximum likelihood method, and reclassifying the construction disturbance range extracted by the primary classification by using the construction disturbance range and the shape information of the construction road; and finally, checking and correcting the extracted result by using a human-computer interaction visual interpretation method and the remote sensing image before construction, and calculating the attributes including construction disturbance area and construction road length width.
The following is a specific implementation process of the present invention.
As shown in figure 1, the power transmission and transformation project relocation line environment-friendly supervision method based on high-resolution remote sensing mainly relies on a remote sensing image T before constructionFront sideAnd remote sensing image T in constructionInAfter preprocessing such as atmospheric correction, geometric correction, image fusion, image registration and the like, obtaining an image matched with a power transmission and transformation transfer and transformation route, classifying different typical ground objects based on a maximum likelihood method, classifying the extracted result construction disturbance range by using the construction disturbance range and the shape information of a construction road, checking and correcting the extracted result by using a human-computer interaction visual interpretation method and a remote sensing image before construction, and calculating attributes such as construction disturbance area, construction road length and width. The method comprises the following concrete implementation steps:
step 1, remote sensing image preprocessing
And obtaining a high-resolution remote sensing image through a network based on the transmission and transformation migration and transformation change line tower point location coordinates. In the process of obtaining the remote sensing image, due to the influence of factors such as a sensor, weather, landform and the like, errors such as sensor errors and coordinate errors are prone to occur, and therefore the image matched with the power transmission and transformation line can be obtained and applied only through processing such as atmospheric correction, geometric correction, image fusion, image registration and the like.
Step 2, classification of remote sensing images in construction after pretreatment
Compared with the remote sensing image before construction, the remote sensing image in construction has the following concrete expression forms that the environment water conservation information of the ground objects such as construction disturbance area, construction road, environment water conservation measures and the like changes, and different typical ground objects have different expressions in the remote sensing image:
a) construction disturbance area: around the power transmission and transformation transition line pole and tower point, a planar area is found to be polygonal, has obvious difference with the surrounding environment and has bright color tone.
b) Constructing a road: near the point of a power transmission and transformation transfer line tower, a planar area tends to be rectangular, has obvious difference with the surrounding environment, has brighter color tone, is similar to the construction disturbance area, and is easily classified into one type.
c) And (4) environmental protection measures: the mat covers a bluish-green planar area with an irregular shape on the remote sensing image, and the retaining wall is a linear ground object with bright white color tone and narrow width.
2.1, establishing sample interesting regions of different ground objects based on the expression forms of construction disturbance areas, construction roads and environmental water conservation measures of the power transmission and transformation migration and transformation line changing construction on the remote sensing image, wherein each type of sample is uniformly distributed on the whole remote sensing image, and the information is complete;
2.2, selecting a maximum classification method to classify the remote sensing images;
and 2.3, converting the classification result grid data into vector data, deleting unnecessary vector information, and identifying a construction disturbance range and an environmental water conservation measure.
And 3, as shown in the figure 2, reclassifying the construction disturbance range based on the construction disturbance area and the shape information of the construction road.
And 3.1, tracking the edge profile of any one construction disturbance range to obtain a closed curve CDEFC. C is the start and end of the closed curve. E is the middle point of the curve, and D and F are respectively any points of the left half part and the right half part of the curve;
step 3.2, connecting C, E two points, and respectively aligning the arc segments CDE and EFCAnd performing piecewise linear fitting. Taking CDE as an example, the sum of the distances from all points on the arc segment to the straight line CE is calculated
If the arc segment has m edge points in total
(H can be 2.0-3.0 according to the accuracy of linear fitting), recording the point with the maximum distance from the straight line CE, recording the point as a peak G, then respectively performing linear fitting on the CG and GE arc line segments, and recording corresponding peaks until all peaks on the curve are found.
Step 3.3, finding two vertexes C adjacent to the left and right of the point C1、C2Two adjacent vertexes E on the left and right of point E1、E2Respectively aligning the arc line segments C by the method of the previous step1C2、E1E2And performing straight-line segment fitting and finding a corresponding vertex.
3.4, finding curve inflection points from the curve peaks, and judging the shape of the closed curve according to the number, distance and angle of the inflection points;
3.4.1, establishing a rectangular coordinate system XOY by taking the central point of the closed curve as an origin O (0, 0);
3.4.2, selecting any five vertexes P (X) on the curveP，YP)、Q(XQ，YQ)、I(XI，YI)、J(XJ，YJ)、S(XS，YS) Slope K of the straight line PQPQComprises the following steps:
if the slope of the straight line between two adjacent points satisfies the following formula, the point I is the inflection point of the curve
(KPQ-KQI)×(KIJ-KJS)＜0
Wherein KQI、KIJ、KJSThe slopes of the straight lines QI, IJ and JS are respectively.
And 3.4.3, starting from the starting point of the closed curve, traversing the vertex anticlockwise, and finding all inflection points in the curve.
Step 3.4.4, calculating the lengths and included angles of straight lines between adjacent inflection points, wherein if the number of the inflection points is more than or equal to 4 and the length difference between two adjacent straight lines of the curve is not large, the curve is a construction disturbance area; if the number of the inflection points is 4 points and the length difference between two adjacent straight lines is large, the curve is a construction road.
And 4, correcting and automatically extracting construction disturbance area, construction road and environmental protection measure extraction results by using a human-computer interaction visual interpretation method and the pre-construction image, and eliminating the existing construction road before construction.
And 5, performing attribute statistics on the extracted result by using a GIS technology, such as area, length, width and the like, and analyzing the overall disturbance condition and compliance.
The invention is mainly characterized in that:
1. and (3) identifying the shape of the construction disturbance range: the inflection points are identified by the slope of the straight line of the adjacent peaks of the closed curve, and the shape is judged by the number of the inflection points and the length of the adjacent straight line.
2. The power transmission and transformation project migration and transformation line environment water conservation supervision method comprises the following steps: the construction disturbance range and the environmental protection measure are firstly identified by using a maximum likelihood method, the disturbance range is divided into a disturbance area and a construction road through the shape, and finally, the man-machine interaction visual interpretation is used for correction, and the identification result is counted, analyzed and identified.
The above are preferred embodiments of the present invention, and all changes made according to the technical scheme of the present invention that produce functional effects do not exceed the scope of the technical scheme of the present invention belong to the protection scope of the present invention.
Claims (6)
1. A high-resolution remote sensing-based environmental water conservation supervision method for power transmission and transformation line relocation is characterized by comprising the steps of firstly carrying out remote sensing image T before constructionFront sideAnd remote sensing image T in constructionInPreprocessing to obtain an image matched with the power transmission and transformation transfer line; then different typical objects in the preprocessed image are processed based on the maximum likelihood methodPerforming primary classification, and reclassifying the construction disturbance range extracted by the primary classification by using the construction disturbance range and the shape information of the construction road; and finally, checking and correcting the extracted result by using a human-computer interaction visual interpretation method and the remote sensing image before construction, and calculating the attributes including construction disturbance area and construction road length width.
2. The environmental protection supervision method for relocation and transformation of transmission and transformation lines based on high-resolution remote sensing according to claim 1, characterized in that the remote sensing image T before constructionFront sideAnd remote sensing image T in constructionInThe pretreatment mode is as follows: based on the point location coordinates of the power transmission and transformation transfer line tower, high-resolution remote sensing images are obtained through a network, and then images matched with the power transmission and transformation transfer line tower are obtained through processing including atmospheric correction, geometric correction, image fusion and image registration.
3. The environmental protection supervision method for relocation and transformation of transmission and transformation lines based on high-resolution remote sensing according to claim 1, characterized in that the preprocessed remote sensing image T in constructionInThe primary classification mode is as follows:
step 1.1, remote sensing image T in construction based on power transmission and transformation migration and line change construction disturbance area, construction road and environmental protection measuresInThe above expression forms are used for establishing sample interesting regions of different ground objects, and each type of sample is subjected to remote sensing image T in the whole construction processInThe upper distribution is uniform, and the information is complete;
step 1.2, selecting a maximum classification method to perform construction remote sensing image TInClassifying;
and step 1.3, converting the classification result grid data into vector data, deleting unnecessary vector information, and identifying a construction disturbance range and an environmental water conservation measure.
4. The environmental-friendly supervision method for relocation and transformation based on high-resolution remote sensing power transmission and transformation line according to claim 3, wherein the construction disturbance range extracted by primary classification is reclassified by using the construction disturbance range and the shape information of the construction road in the following manner:
step 2.1, tracking the edge profile of any one construction disturbance range to obtain a closed curve CDEFC; c is the starting point and the end point of the closed curve, E is the middle point of the curve, and D and F are arbitrary points of the left half part and the right half part of the curve respectively;
step 2.2, connecting C, E two points, and respectively performing piecewise linear fitting on the arc segments CDE and EFC; for CDE, the sum of the distances from all points on the arc segment to the straight line CE is calculated
If the arc segment has m edge points in total
H is in a value range of 2.0-3.0, a point with the largest distance from the straight line CE is recorded and recorded as a peak G, then the two arc line segments of CG and GE are subjected to linear fitting respectively, and corresponding peaks are recorded until all peaks on the curve are found;
step 2.3, finding two vertexes C adjacent to the left and right of the point C1、C2Two adjacent vertexes E on the left and right of point E1、E2Respectively aligning the arc line segments C by the method of step S4.21C2、E1E2Performing straight line segment fitting and finding a corresponding vertex;
and 2.4, finding curve inflection points from the curve peaks, and judging the shape of the closed curve according to the number, distance and angle of the inflection points.
5. The environmental protection supervision method for the relocation and transformation of transmission and transformation lines based on high-resolution remote sensing according to claim 4, wherein the concrete implementation steps of step 2.4 are as follows:
step 2.4.1, establishing a rectangular coordinate system XOY by taking the central point of the closed curve as an origin O (0, 0);
step 2.4.2, selecting any five vertexes P (X) on the curveP，YP)、Q(XQ，YQ)、I(XI，YI)、J(XJ，YJ)、S(XS，YS) Slope K of the straight line PQPQComprises the following steps:
if the slope of the straight line between two adjacent points satisfies the following formula, the point I is the inflection point of the curve
(KPQ-KQI)×(KIJ-KJS)＜0
Wherein KQI、KIJ、KJSStraight lines QI, IJ and JS slope respectively;
step 2.4.3, starting from the starting point of the closed curve, traversing the vertex anticlockwise, and finding all inflection points in the curve;
step 2.4.4, calculating the lengths and included angles of straight lines between adjacent inflection points, wherein if the number of the inflection points is more than or equal to 4 and the length difference between two adjacent straight lines of the curve is not large, the curve is a construction disturbance area; if the number of the inflection points is 4 points and the length difference between two adjacent straight lines is large, the curve is a construction road.
6. The environmental protection supervision method for the relocation and transformation of transmission and transformation lines based on high-resolution remote sensing according to claim 1, characterized in that the specific way of checking and correcting the extraction result by using a human-computer interaction visual interpretation method and the remote sensing image before construction and calculating the attributes including the construction disturbance area and the construction road length width is as follows:
3.1, correcting and automatically extracting construction disturbance area, construction road and environmental protection measure extraction results by using a human-computer interaction visual interpretation method and a pre-construction image, and removing the existing construction road before construction;
and 3.2, carrying out attribute statistics on the extracted result by utilizing a GIS technology, wherein the attribute statistics comprises the attributes of construction disturbance area and construction road length width, and analyzing the overall disturbance condition and compliance.
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| CN115131736A (en) * | 2022-08-26 | 2022-09-30 | 北京江河惠远科技有限公司 | Self-adaptive remote sensing ultra-high voltage construction full-period disturbance monitoring method and equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114046776A (en) * | 2021-09-22 | 2022-02-15 | 北京洛斯达科技发展有限公司 | Power transmission engineering water and soil conservation measure implementation checking system |
| CN114046776B (en) * | 2021-09-22 | 2023-04-21 | 北京洛斯达科技发展有限公司 | Verification system for implementing water and soil conservation measures of power transmission engineering |
| CN115131736A (en) * | 2022-08-26 | 2022-09-30 | 北京江河惠远科技有限公司 | Self-adaptive remote sensing ultra-high voltage construction full-period disturbance monitoring method and equipment |
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