Method and device for acquiring coordinate information, storage medium, and electronic device
A technology of coordinate information and landmarks, applied in the field of drones, can solve the problems of difficult detection and low precision, and achieve the effect of reducing the difficulty of detection and improving the detection accuracy
Active Publication Date: 2022-02-08
ZHEJIANG DAHUA TECH CO LTD
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[0004] Embodiments of the present invention provide a coordinate information acquisition method and device, a storage medium, and an electronic device, so as to at least solve the difficulty in detecting multiple interdependent complex landmark patterns when the unmanned aerial vehicle performs a precise landing task in the related art Larger and less precise questions
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[0025] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.
[0026] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence.
[0027] The method embodiment provided in Embodiment 1 of the present application may be executed in a mobile terminal, a computer terminal, or a similar computing device. Taking running on a mobile terminal as an example, figure 1 It is a hardware structure block diagram of a mobile terminal according to a coordinate information acquisition method in an embodiment of the present invention. Such as figure 1 As shown, the mobile terminal 10 may includ...
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An embodiment of the present invention provides a coordinate information acquisition method and device, a storage medium, and an electronic device. The method includes: acquiring an image frame containing a landmark pattern during the descent of the drone, wherein the landmark pattern includes at least: a background A pattern and a central pattern, the area of the central pattern is smaller than the background pattern, and the central pattern coincides with the background pattern; when the ratio of the area of the landmark pattern displayed in the image frame to the area of the image frame is less than a preset threshold, the landmark pattern is obtained coordinate information; when the ratio of the area of the landmark pattern displayed in the image frame to the area of the image frame is greater than a preset threshold, the coordinate information of the central pattern is obtained. It solves the problem in the related art that when the UAV performs a precise landing task, it detects multiple interdependent complex landmark patterns, resulting in relatively difficult detection and low accuracy.
Description
technical field [0001] The present invention relates to the technical field of unmanned aerial vehicles, in particular, to a coordinate information acquisition method and device, a storage medium, and an electronic device. Background technique [0002] UAV (Unmanned Aerial Vehicle, referred to as UAV) autonomous flight control technology is a research hotspot in the field of UAV today. The precise landing technology of drones is an important part of the flight control technology of drones. When performing precise landing tasks, it is necessary to accurately identify landmark patterns. Using visual positioning technology to analyze the image sequence returned by the drone, calculate the two-dimensional coordinate information of the landmark pattern on each frame of the image coordinate system, and then convert the image coordinate system into the world coordinate system to obtain the actual position of the landmark pattern . In the prior art, when analyzing the image sequen...
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IPC IPC(8): G06K9/00
CPCG06V20/13G06V10/245
Inventor 张诚成马子昂卢维殷俊张兴明
Owner ZHEJIANG DAHUA TECH CO LTD