Method and device for electronic drawing of river course
A river channel and electronic technology, applied in the field of electronic drawing methods and devices for river channels, can solve the problems of no content, unable to display the end of the river channel or branch canals, and reduce the efficiency of water pollution prevention and control, so as to achieve the effect of improving accuracy and improving control efficiency
Active Publication Date: 2022-03-15
山东开创云计算有限公司
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Problems solved by technology
[0004] After the scale of the electronic map is enlarged to a certain extent, the number of terrain and features included in the map in a certain area will be reduced, and even there is no content to display, so the end of the river or branch canal cannot be displayed, thereby reducing the efficiency of water pollution prevention and control
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[0050] In order to explain the overall concept of the present application more clearly, the following detailed description will be given by way of examples in combination with the accompanying drawings.
[0051] Such as figure 1 As shown, the embodiment of the present application discloses an electronic drawing method of a river course, comprising the following steps:
[0052] Step 101. Receive an electronic picture of an object to be drawn and an identification of the object to be drawn.
[0053] In the embodiment of this application, the electronic pictures of the end of the river or the branch canals come from the relevant departments of water conservancy. In the electronic pictures provided by the relevant departments of water conservancy, the size of the end of the river or the branch canal is obtained by reducing its real size by a certain ratio, that is, the positional relationship between the connection points of the end of the river or the branch canal in the electroni...
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The present application discloses a method and device for electronic drawing of a river course. The method includes: receiving an electronic picture of the target to be drawn and the identification of the target to be drawn; identifying the river course in the electronic picture, and extracting the ridge features of the river course; Identify, determine the reference point and the latitude and longitude coordinates of the reference point on the electronic picture of the target to be drawn; according to the scale of the reference point and the target to be drawn, determine the connection point, the longitude and latitude coordinates of the connection point and the connection point in the ridge feature of the river channel in the electronic picture Connection information between points; adjust the scale of the electronic map to the scale of the electronic picture; determine the coordinates of the connection point and other points in the electronic map connected to the connection point in the pre-stored electronic map according to the longitude and latitude coordinates of the determined connection point ; According to the connection information between the determined connection points, connect the connection points on the electronic map to obtain the electronic map under the corresponding scale. The application can improve the prevention and control efficiency of water pollution.
Description
technical field [0001] The present application relates to the technical field of electronic map drawing, in particular to a method and device for electronic drawing of river channels. Background technique [0002] In recent years, water pollution incidents have occurred continuously, so people pay more and more attention to the prevention and control of water pollution to solve the problem of water pollution. [0003] In order to better prevent water pollution, people display canals or rivers on electronic maps for information management, thereby improving the efficiency of water pollution prevention and control. [0004] After the scale of the electronic map is enlarged to a certain extent, the number of terrain features included in the map in a certain area will be reduced, and even there is no content to display, so the end of the river or branch canal cannot be displayed, thereby reducing the efficiency of water pollution prevention and control. Contents of the inventi...
Claims
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IPC IPC(8): G06F16/29
CPCG06F16/29
Inventor 王兆海
Owner 山东开创云计算有限公司