Search Results - "Hu, Youjian"

An Improved Morphological Algorithm for Filtering Airborne LiDAR Point Cloud Based on Multi-Level Kriging Interpolation by Hui, Zhenyang, Hu, Youjian, Yevenyo, Yao Ziggah, Yu, Xianyu

“…Filtering is one of the core post-processing steps for airborne LiDAR point cloud. In recent years, the morphology-based filtering algorithms have proven to be…”
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Estimation and Analysis of BDS-3 Differential Code Biases from MGEX Observations by Wang, Qisheng, Jin, Shuanggen, Yuan, Liangliang, Hu, Youjian, Chen, Jie, Guo, Jiabin

“…The third generation of China’s BeiDou Navigation Satellite System (BDS-3) began to provide global services on 27 December, 2018. Differential code bias (DCB)…”
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Capability of Artificial Neural Network for Forward Conversion of Geodetic Coordinates (ϕ,λ,h) to Cartesian Coordinates (X, Y, Z) by Ziggah, Yao Yevenyo, Youjian, Hu, Yu, Xianyu, Basommi, Laari Prosper

“…The standard forward transformation equation plays a major role in coordinate transformation between global and local datums. Thus, it is a prerequisite step…”
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Coordinate Transformation between Global and Local Data Based on Artificial Neural Network with K-Fold Cross-Validation in Ghana by Ziggah, Yao Yevenyo, Youjian, Hu, Tierra, Alfonso Rodrigo, Laari, Prosper Basommi

“…ABSTRACT The popularity of Artificial Neural Network (ANN) methodology has been growing in a wide variety of areas in geodesy and geospatial sciences. Its…”
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An Active Learning Method for DEM Extraction From Airborne LiDAR Point Clouds by Hui, Zhenyang, Jin, Shuanggen, Cheng, Penggen, Ziggah, Yao Yevenyo, Wang, Leyang, Wang, Yuqian, Hu, Haiying, Hu, Youjian

“…Airborne Light Detection and Ranging (LiDAR) is a popular active remote sensing technology that has been developing very rapidly in recent years. To solve the…”
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An Improved Skewness Balancing Filtering Algorithm Based on Thin Plate Spline Interpolation by Cheng, Penggen, Hui, Zhenyang, Xia, Yuanping, Ziggah, Yao Yevenyo, Hu, Youjian, Wu, Jing

“…Most filtering algorithms suffer from complex parameter settings or threshold adjusting. To solve this problem, this paper proposes an improved skewness…”
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Performance evaluation of artificial neural networks for planimetric coordinate transformation—a case study, Ghana by Ziggah, Yao Yevenyo, Youjian, Hu, Tierra, Alfonso, Konaté, Ahmed Amara, Hui, Zhenyang

“…Two national horizontal geodetic datums, namely, the Accra and Leigon datum, have been the only available datum used in Ghana. These two datums are…”
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Coordinate Transformation between Global and Local Datums Based on Artificial Neural Network with K-Fold Cross-Validation: A Case Study, Ghana by Ziggah, Yao Yevenyo, Youjian, Hu, Tierra, Alfonso Rodrigo, Laari, Prosper Basommi

“…The popularity of Artificial Neural Network (ANN) methodology has been growing in a wide variety of areas in geodesy and geospatial sciences. Its ability to…”
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Cubic meter compressive strength prediction of concrete by Gong, Zhen, Zhang, Yimin, Hu, Youjian, Yu, Yan, Yuan, Yanbin, Li, Hua

“…In order to improve the prediction accuracy of compressive strength of concrete,103 groups of concrete data were collected as the samples.We selected seven…”
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NeuroSLAM: a brain-inspired SLAM system for 3D environments by Yu, Fangwen, Shang, Jianga, Hu, Youjian, Milford, Michael

“…Roboticists have long drawn inspiration from nature to develop navigation and simultaneous localization and mapping (SLAM) systems such as RatSLAM. Animals…”
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Effect of nano-Ti-Li-Al hydrotalcite-like on the hydration and hardening properties of sulfoaluminate cement-based materials by Zheng, Zhilong, Li, Haiyan, Hu, Youjian, Luo, Shuqiong, Zhu, Jianping

“…The use of sulfoaluminate cement-based materials (SCBMs) in grout reinforcement projects is common, and they also perform well in road repair and other…”
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Estimation of QZSS differential code biases using QZSS/GPS combined observations from MGEX by Wang, Qisheng, Jin, Shuanggen, Hu, Youjian

“…As an important error source in Global Navigation Satellite System (GNSS) positioning and ionospheric modeling, the differential code biases (DCB) need to be…”
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A Combination of Geographically Weighted Regression, Particle Swarm Optimization and Support Vector Machine for Landslide Susceptibility Mapping: A Case Study at Wanzhou in the Three Gorges Area, China by Yu, Xianyu, Wang, Yi, Niu, Ruiqing, Hu, Youjian

“…In this study, a novel coupling model for landslide susceptibility mapping is presented. In practice, environmental factors may have different impacts at a…”
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Automatic DTM extraction from airborne LiDAR based on expectation-maximization by Hui, Zhenyang, Li, Dajun, Jin, Shuanggen, Ziggah, Yao Yevenyo, Wang, Leyang, Hu, Youjian

“…•Filtering is seen as a separation of mixed Gaussian models.•Ground points can be extracted automatically by applying the EM algorithm.•The fitted surface can…”
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Road centerline extraction from airborne LiDAR point cloud based on hierarchical fusion and optimization by Hui, Zhenyang, Hu, Youjian, Jin, Shuanggen, Yevenyo, Yao Ziggah

“…Road information acquisition is an important part of city informatization construction. Airborne LiDAR provides a new means of acquiring road information…”
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The maximum likelihood estimation for multivariate EIV model by Wang, Qisheng, Hu, Youjian, Wang, Bin

“…In this paper, a new method of parameter estimation for multivariate errors-in-variables (MEIV) model was proposed. The formulae of parameter solution for the…”
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Epoch-by-epoch estimation and analysis of BeiDou Navigation Satellite System (BDS) receiver differential code biases with the additional BDS-3 observations by Wang, Qisheng, Jin, Shuanggen, Hu, Youjian

“…The differential code bias (DCB) of the Global Navigation Satellite System (GNSS) is an important error source in ionospheric modeling, which was generally…”
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Effect of AH3‑PCE Ultrafine Composites on the Properties of Sulfoaluminate Cement-Based Materials by Li, Haiyan, Hu, Youjian, Lu, Jiang, Zhao, Wei, Liu, Yang, Luo, Shuqiong, Zhu, Jianping

“…The use of superfine particles has been found to be a promising method for accelerating cement hydration. Amorphous aluminum hydroxide (AH3) is a key hydration…”
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Effect of AH 3 -PCE Ultrafine Composites on the Properties of Sulfoaluminate Cement-Based Materials by Li, Haiyan, Hu, Youjian, Lu, Jiang, Zhao, Wei, Liu, Yang, Luo, Shuqiong, Zhu, Jianping

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Coordinate Transformation between Global and Local Data Based on Artificial Neural Network with K-Fold Cross-Validation in Ghana/Transformacion coordinada entre informacion global y local basada en Redes Neuronales Artificiales con validacion cruzada de k-iteraciones en Ghana by Ziggah, Yao Yevenyo, Youjian, Hu, Tierra, Alfonso Rodrigo, Laari, Prosper Basommi

“…The popularity of Artificial Neural Network (ANN) methodology has been growing in a wide variety of areas in geodesy and geospatial sciences. Its ability to…”
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