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Mobile laser measurement point-based indoor structured three-dimensional reconstruction method

A 3D reconstruction and laser measurement technology, applied in the field of map drawing, can solve the problems of incomplete point cloud data, time-consuming processing, point cloud data noise, etc., to achieve fast and efficient construction, improve efficiency, and improve accuracy and precision.

Inactive Publication Date: 2018-03-30
WUHAN UNIV
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Problems solved by technology

However, point cloud data processing faces a series of challenges: point cloud data has noise, and point cloud data is incomplete due to occlusion caused by indoor facilities.
Although the point cloud contains rich geometric information, it lacks semantics and is not convenient for the use of point cloud data. At the same time, due to the huge amount of point cloud data, processing is very time-consuming
All of these have caused great difficulties in the automatic construction of indoor 3D models.

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  • Mobile laser measurement point-based indoor structured three-dimensional reconstruction method
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[0035] In order to facilitate those of ordinary skill in the art to understand and implement the present invention, the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the implementation examples described here are only used to illustrate and explain the present invention, and are not intended to limit this invention.

[0036] The problem of room segmentation is one of the research hotspots in the field of robotics. The main purpose is to serve the cognition and task planning of robots. At the same time, the problem of 3D reconstruction of buildings has received extensive attention in the field of architectural engineering.

[0037] In this context, the present invention provides a structured 3D reconstruction method suitable for indoor large-scale scenes, which transforms the indoor 3D reconstruction problem based on point cloud data into room segmentation and GIS-based over...

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Abstract

The invention discloses a mobile laser measurement point-based indoor structured three-dimensional reconstruction method. The mobile laser measurement point-based indoor structured three-dimensional reconstruction method comprises performing room division on the basis of a laser scanning point cloud evidence raster map; performing space division on the basis of vector wall projection line segments; structuring a vector room plan and an indoor three-dimensional model on the basis of vector-raster overlaying. The mobile laser measurement point-based indoor structured three-dimensional reconstruction method makes full use of semantic information and structured elements of indoor space, converts an indoor three-dimensional reconstruction problem into room division and GIS-based (geographic information system-based) overlaid analysis problems, takes divided rooms as prior knowledge to solve the problem of shading and in complete data of laser measurement during a modeling process and can rapidly and effectively structure an indoor building three-dimensional model with topological consistency. Compared with other methods, the mobile laser measurement point-based indoor structured three-dimensional reconstruction method can better process point cloud data of indoor complicated environment and meet the demands on indoor structuralized three-dimensional reconstruction.

Description

technical field [0001] The invention belongs to the technical field of map drawing, in particular to a method for building an indoor structured three-dimensional model based on point clouds. Background technique [0002] With the rapid development of urbanization, the spatial scope of the city continues to expand. Most of human activities take place in the indoor environment, and people's demand for various indoor services is also increasing, such as indoor navigation, emergency escape, service robots, etc. The needs of these indoor services all require indoor maps and 3D models of buildings. [0003] The construction of 3D urban models based on laser point cloud technology has the advantages of high speed and high precision, and has become a research hotspot in indoor 3D reconstruction. However, point cloud data processing faces a series of challenges: point cloud data has noise, and point cloud data is incomplete due to occlusion caused by indoor facilities. Although po...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/00
Inventor 李霖杨帆朱海红应申苏飞李大林左辛凯梁一帆
Owner WUHAN UNIV
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