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Streetscape ground object multi-dimensional extraction method and system based on point cloud data

A technology of point cloud data and extraction methods, applied in image data processing, character and pattern recognition, instruments, etc., can solve the problems of low precision, single type and single type of extracted ground objects, and achieve the effect of accurate extraction and recognition

Pending Publication Date: 2022-01-21
CHONGQING CYBERCITY SCI TECH
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Problems solved by technology

[0003] Due to the diversity and complexity of the geometric model of the building, the artificial environment and the natural environment in which the building is located are generally more complicated, including vegetation such as trees, as well as roads, poles and towers and other artificial features. Objects are extracted through a single dimension, and the types of extracted objects are single, and the accuracy is not high

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  • Streetscape ground object multi-dimensional extraction method and system based on point cloud data
  • Streetscape ground object multi-dimensional extraction method and system based on point cloud data
  • Streetscape ground object multi-dimensional extraction method and system based on point cloud data

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[0059] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the drawings in the embodiments of the present invention.

[0060]It should be noted that: in the drawings, the same or similar symbols represent the same or similar elements or elements with the same or similar functions. The described embodiments are part of the embodiments of the present invention, but not all of the embodiments. In the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0061] In describing the present invention, it is to be understood that ...

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Abstract

The invention discloses a streetscape ground object multi-dimensional extraction method and system based on point cloud data. The method mainly comprises: enabling original point cloud data to comprise absolute coordinates and elevation information; extracting ground point clouds and non-ground point clouds in the point cloud data by using a distribution algorithm; and extracting various ground features from non-ground point clouds class by class by using a multi-dimensional method to obtain different types of ground feature recognition. According to the invention, different types of ground features are extracted from the non-ground point cloud data by adopting a multi-dimensional method, and street ground features can be rapidly, effectively and accurately extracted and identified.

Description

technical field [0001] The present invention relates to the technical field of point cloud data extraction, in particular to a method and system for multi-dimensional extraction of street view features based on point cloud data. Background technique [0002] In recent years, laser radar technology (LIDAR) is a technology that can directly obtain three-dimensional information on the ground, which has unparalleled advantages over traditional aerial photogrammetry. The laser radar scanning system avoids the necessary steps of orientation and image matching in traditional photogrammetry. Compared with the traditional photogrammetry method, it has the advantages of fast speed, high precision, and low cost, and has the advantages of real-time, high efficiency, non-contact, and large data volume. The point cloud data acquired by LIDAR contains rich environmental information, including ground information, vegetation information, wire information, building information, etc. To accur...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06V20/10G06V10/762G06V10/26G06K9/62G06T3/00
CPCG06F18/23G06T3/08
Inventor 罗再谦刘颖向煜黄志周兵韩熙华媛媛朱勃李兵张彦曹欣王永刚王军涛李楠楠王翔
Owner CHONGQING CYBERCITY SCI TECH