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

Method for measuring green quantity of irregular crown-shaped standing tree

A measuring method and irregular technology, applied in the field of forest resources survey to achieve high precision

Inactive Publication Date: 2012-05-23
BEIJING FORESTRY UNIVERSITY
View PDF1 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the many troubles that the existing method inevitably brings in the forest standing tree green quantity measurement process and improve work efficiency, the purpose of this invention is to provide a kind of irregular crown shape standing tree green quantity measurement method, which overcomes the existing The above-mentioned shortcomings of the method

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] First select the standing tree, set the scanning angle, scanning quality and other parameters in the 3D scanner system, install the laser scanner according to the position, adjacent degree, crown shape, etc. of the standing tree, and place a reference ball around the standing tree to be scanned. Adjacent standing trees can be clearly separated between different scanning stations on the Internet, and three or more reference spheres can be completely seen in the standing trees scanned between different stations, so that the target standing trees can be well extracted. The root of the target standing tree is affixed with target paper in order to correctly obtain the direction of the standing tree when processing data, and provide a reference basis for the subsequent calculation of crown width; while scanning at each station, a digital camera is used to take pictures, so as to provide a reference for adjacent standing trees when extracting data. The coverage provides a refer...

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 measuring the green quantity of an irregular crown-shaped standing tree, which comprises the steps of: using a three-dimensional laser scanning system to obtain the standing tree point cloud data; cutting the crown of the whole standing tree from top down in multi-section and equal-distance manner; using a least square method to fit the curved surfaces of the cut cones and circular truncated cones to obtain all the curved surfaces so as to obtain the volumes and the surface areas of the curved surfaces; and finally performing accumulation and summation on the equidistantly cut cones and circular truncated cones to obtain the volume and the surface area of the whole tree crown. The method greatly improves the accuracy of measuring the green quantity of the standing tree, reduces the working amount, improves the working efficiency and has the omnibearing characteristic.

Description

1. Technical field [0001] The invention relates to a method for investigating forest resources, in particular to a method for measuring the green quantity of standing trees with irregular crown shapes. 2. Technical Background [0002] "Green three-dimensional quantity" is also called "green quantity", which refers to the volume of space occupied by the stems and leaves of green plants, in units of m 3 to calculate. Compared with the plane quantity (such as the green coverage rate), the three-dimensional green quantity index can more accurately reflect the rationality of the vegetation composition and the level of ecological benefits, and reflect the overall level of urban greening. It provides a theoretical basis for the study of ecological gardens. Quantitative research on urban landscaping has undergone a qualitative leap, and has attracted the attention of many relevant people in the industry. The calculation of the traditional standing tree green quantity mainly includ...

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): G01B11/00G01B11/28
Inventor 冯仲科唐雪海王佳
Owner BEIJING FORESTRY UNIVERSITY
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