Method for acquiring elevation of certain point of remote sensing image based on laser range finder and holder

Abstract

The invention discloses a method for acquiring elevation of a certain point of a remote sensing image based on a laser range finder and a holder, and belongs to the field of autonomous navigation and remote sensing images. According to the method, an unmanned aerial vehicle is controlled to take off in a remote sensing image area, a waypoint flight mode is set, a point which wants to obtain elevation information is set as a waypoint, height information of the unmanned aerial vehicle is obtained through a barometric altimeter after the unmanned aerial vehicle reaches the waypoint, and a pan-tilt angle is adjusted according to an inclination angle between the unmanned aerial vehicle and the sea level, the position relation between the unmanned aerial vehicle and the laser range finder is obtained, then height information of the laser range finder is obtained, the laser range finder irradiates vertically downwards, the vertical distance between the laser range finder and the waypoint position is obtained, then elevation information of the waypoint position in a remote sensing map is obtained, and finally the elevation information is added to a remote sensing image. Compared with an existing remote sensing map, the elevation information of a certain point in the remote sensing image can be obtained, and more references can be provided for users of the remote sensing map.

Description

technical field [0001] The invention relates to the fields of autonomous navigation and remote sensing images, in particular to a method for obtaining the elevation of a certain point in a remote sensing image based on a laser range finder and a cloud platform. Background technique [0002] Remote sensing map is a kind of visual map, which contains the latitude and longitude information of each pixel point, but the current remote sensing map lacks the elevation information of each point, and cannot provide height reference for users. If you can add elevation information to a point where you want to obtain elevation information, the information in the remote sensing map will be more abundant, which can provide users with more references. [0003] At present, most drones are equipped with laser range finders. However, although the laser rangefinder can measure the distance between two points, it cannot always be kept parallel to the sea level during the flight of the drone, a...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention provides a method for obtaining the elevation of a point in a remote sensing image based on a laser range finder and a cloud platform, which can solve the problem of missing elevation information in existing remote sensing maps

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