Still water treatment method and device

A treatment method, technology for waters, applied in the direction of measuring devices, height/level measurement, instruments, etc., capable of solving problems such as overflow in still waters
CN107677239BActive Publication Date: 2020-10-30AERIAL PHOTOGRAMMETRY & REMOTE SENSING CO LTD
4 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
AERIAL PHOTOGRAMMETRY & REMOTE SENSING CO LTD
Publication Date
2020-10-30

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The present invention provides a method and device for processing still waters. The method includes: classifying the point cloud collected by the airborne laser radar to obtain a plurality of ground points; among the plurality of ground points, the ground points located within the range of the target still waters As the first ground point; collect the ground points in the preset range around the target still water as the second ground point; find out the target ground point with the minimum elevation value among the first ground point and the second ground point, and use the target ground point The difference obtained after subtracting a preset value from the elevation value of the target still water area is used as the elevation value of the target still water area, and then an irregular triangular network is generated based on the elevation value of the target still water area, and a digital elevation model is made based on the irregular triangular network. In this way, still water overflow in the produced digital elevation model can be avoided.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present invention relates to the technical field of airborne LiDAR (Light Detection And Ranging, LiDAR), in particular to a method and device for processing still waters. Background technique

[0002] Still waters refer to waters where the water surface is still, such as ponds, lakes, reservoirs, etc. In the process of digital elevation model (Digital Elevation Model, DEM) production, the elevation value is given to it according to the LiDAR ground points adjacent to the still water. However, this elevation value is not necessarily the minimum value for the still water area, resulting in still water overflow, that is, the height of the still water exceeds the height of its surroundings. Contents of the invention

[0003] In view of this, the purpose of the present invention is to provide a still water treatment method and device to improve the above problems.

[0004] In order to achieve the above purpose, an embodiment of the present invention...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More