Point Clouds Classification Algorithm of Vegetation Based on Area and Pointing Features

Name		Combination value	Name		Combination value
∑_λ	Sum	$λ_{1} + λ_{2} + λ_{3}$	C_λ	Surface Variation	$\frac{λ_{3}}{λ_{1} + λ_{2} + λ_{3}}$
O_λ	Omnivariance	$\sqrt[3]{λ_{1} \cdot λ_{2} \cdot λ_{3}}$	S_λ	Sphericity	$\frac{λ_{3}}{λ_{1}}$
A_λ	Anisotropy	$\frac{λ_{1} - λ_{3}}{λ_{1}}$	V_λ	Verticality	$1 - \|〈[\begin{matrix} 0 & 0 & 1 \end{matrix}], e_{3}〉\|$
P_λ	Planarity	$\frac{λ_{2} - λ_{3}}{λ_{1}}$	J_λ	Area	$\frac{λ_{1} \cdot λ_{2}}{λ_{3}}$
L_λ	Linearity	$\frac{λ_{1} - λ_{2}}{λ_{1}}$	Z_λ	Pointing	$\frac{λ_{3} \cdot λ_{1}}{λ_{2}}$

Table 2. Accuracy analysis of vegetation classification

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Table 2. Accuracy analysis of vegetation classification

Feature	Recall /%		Precision /%		F1-Score /%		Accuracy /%
Feature	Data_1	Data_2	Data_1	Data_2	Data_1	Data_2	Data_1	Data_2
A_λ、P_λ、L_λ、S_λ、V_λ	33.33	79.26	56.90	90.39	42.04	84.46	56.90	84.88
λ₁、λ₂、λ₃、∑_λ、O_λ	66.62	99.48	99.02	99.33	79.65	99.41	99.14	99.51
λ₁、λ₂、λ₃、∑_λ、O_λ、A_λ、P_λ	66.78	99.50	99.35	99.35	79.88	99.43	99.15	99.52
λ₁、λ₂、λ₃、∑_λ、O_λ、J_λ、Z_λ	97.79	99.80	99.93	99.65	98.85	99.72	99.90	99.74

Table 3. Quantitative comparison between proposed algorithm and other algorithms on Data _1 and Data_ 2

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Table 3. Quantitative comparison between proposed algorithm and other algorithms on Data _1 and Data_ 2

Algorithm	Recall /%		Precision /%		F1-Score /%		Accuracy /%
Algorithm	Data_1	Data_2	Data_1	Data_2	Data_1	Data_2	Data_1	Data_2
UXWFF	99.07	97.57	83.80	96.10	90.79	96.83	98.65	96.92
MCM	66.67	66.19	99.06	98.16	79.69	79.07	99.19	98.39
PCCM	99.01	99.09	98.34	98.46	98.68	98.77	98.75	98.84
Proposed algorithm	97.79	99.80	99.93	99.65	98.85	99.72	99.90	99.74

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Zhouyang Hua, Sheng Xu, Ying’an Liu. Point Clouds Classification Algorithm of Vegetation Based on Area and Pointing Features[J]. Laser & Optoelectronics Progress, 2022, 59(18): 1828001

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Paper Information

Category: Remote Sensing and Sensors

Received: May. 26, 2021

Accepted: Aug. 10, 2021

Published Online: Aug. 22, 2022

The Author Email: Liu Ying’an (lyastat@njfu.edu.cn)

DOI:10.3788/LOP202259.1828001

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology