Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for extracting parameters of tree branches based on ground laser radar three-dimensional scanning

A terrestrial lidar and three-dimensional scanning technology, applied in image data processing, using optical devices, measuring devices, etc., can solve the problems of large tree triangular mesh model data and unsatisfactory model details, and achieve automatic or semi-automatic Extraction, good model effect, effect of low sampling interval

Inactive Publication Date: 2013-08-21
RES INST OF FOREST RESOURCE INFORMATION TECHN CHINESE ACADEMY OF FORESTRY
View PDF4 Cites 40 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the number of point clouds is too large, the data of the constructed tree triangular mesh model is too large; and when the number of point clouds is too small, the details of the constructed model are not satisfactory

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for extracting parameters of tree branches based on ground laser radar three-dimensional scanning
  • Method for extracting parameters of tree branches based on ground laser radar three-dimensional scanning
  • Method for extracting parameters of tree branches based on ground laser radar three-dimensional scanning

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: Invention process such as figure 1 shown,

[0029] 1. Point cloud data acquisition

[0030] The steps to scan a tree with a 3D laser scanner are as follows:

[0031] (1) Station design steps,

[0032] According to the position, size and shape of the sample trees and the main tree measuring factors, design the position of each scanning station and control point; require at least three control points to overlap between each station, so that the point cloud data can be unified under the instrument coordinate system;

[0033] (2) global scan step,

[0034] Set up a scanner on the selected station for scanning. In order to improve the scanning speed, low-precision scanning can be used for global scanning; the scanner automatically scans according to the parameters set in the software environment (number of rows, columns, and scanning resolution, etc.) ;

[0035] (3) Partial scanning step,

[0036] After the global scan is completed at each station, it is ...

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

PUM

No PUM Login to View More

Abstract

The invention discloses a method for extracting parameters of tree branches based on ground laser radar three-dimensional scanning and belongs to the technical field of point cloud data processing of the ground laser radar three-dimensional scanning and the technical field of visualization model simulation of tree forms. The method comprises the following steps: utilizing a ground three-dimensional scanner as a data acquisition platform, scanning and obtaining point cloud data of the tree branches, and dividing the point cloud data of the tree branches into different parts; stratifying the point cloud data in the height direction of the tree, extracting point cloud isolines of different heights of the tree by means of a convex hull algorithm, and constructing tree branch triangular mesh between adjacent isolines by means of a triangulation network growth algorithm; combining a triangulation network of different parts of a tree, and constructing an overall triangulation network model of the tree branches. The parameters of the tree branches are extracted by means of ray collision detection technology, the error between the parameters and the actual measured value is kept to be within 5%, requirements of forest measurement can be met, and the efficiency of forest measurement can be greatly improved.

Description

technical field [0001] The invention relates to a tree branch parameter extraction method based on ground laser radar three-dimensional scanning, and belongs to two technical fields of ground laser radar three-dimensional scanning point cloud data processing and tree shape visualization model simulation. Background technique [0002] The acquisition of tree branch parameters provides an indispensable data basis for tree visualization simulation. Using traditional methods to measure tree branch parameters requires the support of a large number of field survey data, the investigation of large-sample tree morphological indicators, and the complex and difficult field survey environment It needs a simple and fast operation, practical and reliable technology to quickly obtain the morphological model parameters of each tree. Ground 3D laser scanning, as a new type of surveying and mapping technology that can automatically, continuously and quickly acquire 3D point cloud data of obj...

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

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G06T17/00G01B11/00
Inventor 张怀清高士增刘闽鞠洪波蒋娴
Owner RES INST OF FOREST RESOURCE INFORMATION TECHN CHINESE ACADEMY OF FORESTRY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com