Search Results - "Yan, Guangjian"

Review of indirect optical measurements of leaf area index: Recent advances, challenges, and perspectives by Yan, Guangjian, Hu, Ronghai, Luo, Jinghui, Weiss, Marie, Jiang, Hailan, Mu, Xihan, Xie, Donghui, Zhang, Wuming

“…•Latest progress and prospects of indirect LAI measurement.•Comprehensive review of theories, algorithms, instruments, and challenges.•Appealing new means of…”
Get full text

An Easy-to-Use Airborne LiDAR Data Filtering Method Based on Cloth Simulation by Zhang, Wuming, Qi, Jianbo, Wan, Peng, Wang, Hongtao, Xie, Donghui, Wang, Xiaoyan, Yan, Guangjian

“…Separating point clouds into ground and non-ground measurements is an essential step to generate digital terrain models (DTMs) from airborne LiDAR (light…”
Get full text

Satellite-derived land surface temperature: Current status and perspectives by Li, Zhao-Liang, Tang, Bo-Hui, Wu, Hua, Ren, Huazhong, Yan, Guangjian, Wan, Zhengming, Trigo, Isabel F., Sobrino, José A.

“…Land surface temperature (LST) is one of the key parameters in the physics of land surface processes from local through global scales. The importance of LST is…”
Get full text

Fractional vegetation cover estimation by using multi-angle vegetation index by Mu, Xihan, Song, Wanjuan, Gao, Zhan, McVicar, Tim R., Donohue, Randall J., Yan, Guangjian

“…The vegetation index-based (VI-based) mixture model is widely used to derive green fractional vegetation cover (FVC) from remotely sensed data. Two critical…”
Get full text

Automatic Extraction of Power Lines From Aerial Images by Yan, Guangjian, Li, Chaoyang, Zhou, Guoqing, Zhang, Wuming, Li, Xiaowen

“…There has been little investigation for the automatic extraction of power lines from aerial images due to the low resolution of aerial images in the past…”
Get full text

Consistent retrieval methods to estimate land surface shortwave and longwave radiative flux components under clear-sky conditions by Wang, Tianxing, Yan, Guangjian, Chen, Ling

“…Shortwave (0.3–3μm) and longwave (3–50μm) surface radiative flux components have been widely used in numerical prediction, meteorology, hydrology, biomass…”
Get full text

Indirect measurement of leaf area index on the basis of path length distribution by Hu, Ronghai, Yan, Guangjian, Mu, Xihan, Luo, Jinghui

“…Accurate leaf area index (LAI) measurements are important for understanding and evaluating global mass and energy cycle. Foliage clumping serves an important…”
Get full text

Extracting the Green Fractional Vegetation Cover from Digital Images Using a Shadow-Resistant Algorithm (SHAR-LABFVC) by Song, Wanjuan, Mu, Xihan, Yan, Guangjian, Huang, Shuai

“…Taking photographs with a commercially available digital camera is an efficient and objective method for determining the green fractional vegetation cover…”
Get full text

SLAM-aided forest plot mapping combining terrestrial and mobile laser scanning by Shao, Jie, Zhang, Wuming, Mellado, Nicolas, Wang, Nan, Jin, Shuangna, Cai, Shangshu, Luo, Lei, Lejemble, Thibault, Yan, Guangjian

“…Precise structural information collected from plots is significant in the management of and decision-making regarding forest resources. Currently, laser…”
Get full text

A Novel Approach for the Detection of Standing Tree Stems from Plot-Level Terrestrial Laser Scanning Data by Zhang, Wuming, Wan, Peng, Wang, Tiejun, Cai, Shangshu, Chen, Yiming, Jin, Xiuliang, Yan, Guangjian

“…Tree stem detection is a key step toward retrieving detailed stem attributes from terrestrial laser scanning (TLS) data. Various point-based methods have been…”
Get full text

A review of current methodologies for regional evapotranspiration estimation from remotely sensed data by Li, Zhao-Liang, Tang, Ronglin, Wan, Zhengming, Bi, Yuyun, Zhou, Chenghu, Tang, Bohui, Yan, Guangjian, Zhang, Xiaoyu

“…An overview of the commonly applied evapotranspiration (ET) models using remotely sensed data is given to provide insight into the estimation of ET on a…”
Get full text

Topographic radiation modeling and spatial scaling of clear-sky land surface longwave radiation over rugged terrain by Yan, Guangjian, Wang, Tianxing, Jiao, Zhonghu, Mu, Xihan, Zhao, Jing, Chen, Ling

“…Longwave radiation (5–100μm) is a critical component of the Earth's radiation budget. Most of the existing satellite-based retrieval algorithms are valid only…”
Get full text

Simulating High-Resolution Sun-Induced Chlorophyll Fluorescence Image of Three-Dimensional Canopy Based on Photon Mapping by Luo, Yaotao, Xie, Donghui, Qi, Jianbo, Yan, Guangjian, Mu, Xihan

“…The remote sensing of sun-induced chlorophyll fluorescence (SIF) is an emerging technique with immense potential for terrestrial vegetation sciences. However,…”
Get full text

Evaluation of MODIS LAI/FPAR Product Collection 6. Part 2: Validation and Intercomparison by Yan, Kai, Park, Taejin, Yan, Guangjian, Liu, Zhao, Yang, Bin, Chen, Chi, Nemani, Ramakrishna R, Knyazikhin, Yuri, Myneni, Ranga B

“…The aim of this paper is to assess the latest version of the MODIS LAI/FPAR product (MOD15A2H), namely Collection 6 (C6). We comprehensively evaluate this…”
Get full text

A novel method for extracting green fractional vegetation cover from digital images by Liu, Yaokai, Mu, Xihan, Wang, Haoxing, Yan, Guangjian

“…Question: Although digital photography is an efficient and objective means of extracting green fractional vegetation cover (FVC), it lacks automation and…”
Get full text

Quantifying Understory and Overstory Vegetation Cover Using UAV-Based RGB Imagery in Forest Plantation by Li, Linyuan, Chen, Jun, Mu, Xihan, Li, Weihua, Yan, Guangjian, Xie, Donghui, Zhang, Wuming

“…Vegetation cover estimation for overstory and understory layers provides valuable information for modeling forest carbon and water cycles and refining forest…”
Get full text

Generalized Fine-Resolution FPAR Estimation Using Google Earth Engine: Random Forest or Multiple Linear Regression by Wang, Yiting, Zhan, Yinggang, Yan, Guangjian, Xie, Donghui

“…Accurate estimation of fine-resolution fraction of absorbed photosynthetically active radiation (FPAR) is urgently needed for modeling land surface processes…”
Get full text

Ultrahigh-resolution boreal forest canopy mapping: Combining UAV imagery and photogrammetric point clouds in a deep-learning-based approach by Li, Linyuan, Mu, Xihan, Chianucci, Francesco, Qi, Jianbo, Jiang, Jingyi, Zhou, Jiaxin, Chen, Ling, Huang, Huaguo, Yan, Guangjian, Liu, Shouyang

“…•Self-supervised deep learning for forest canopy mapping using UAVs is proposed.•2D images and 3D SfM point clouds are combined for automated training set…”
Get full text

Evaluation of MODIS LAI/FPAR Product Collection 6. Part 1: Consistency and Improvements by Yan, Kai, Park, Taejin, Yan, Guangjian, Chen, Chi, Yang, Bin, Liu, Zhao, Nemani, Ramakrishna R, Knyazikhin, Yuri, Myneni, Ranga B

“…As the latest version of Moderate Resolution Imaging Spectroradiometer (MODIS) Leaf Area Index (LAI) and Fraction of Photosynthetically Active Radiation (FPAR)…”
Get full text

Assessment of remote-sensed vegetation indices for estimating forest chlorophyll concentration by Gao, Si, Yan, Kai, Liu, Jinxiu, Pu, Jiabin, Zou, Dongxiao, Qi, Jianbo, Mu, Xihan, Yan, Guangjian

“…•3D RT simulations are used to assess the VI performance for estimating forest chlorophyll concentration.•Influences of saturation effect, soil backgrounds,…”
Get full text