Results 41 to 50 of about 235,860 (270)

Micelle Mediated Trace Level Sulfide Quantification through Cloud Point Extraction [PDF]

The Scientific World Journal, 2012
A simple cloud point extraction protocol has been proposed for the quantification of sulfide at trace level. The method is based on the reduction of iron (III) to iron (II) by the sulfide and the subsequent complexation of metal ion with nitroso-R salt in alkaline medium.
Devaramani, S., Malingappa, P.
openaire   +4 more sources

Optimization of the 3D Point Cloud Registration Algorithm Based on FPFH Features

Applied Sciences, 2023
In order to solve the problem of the traditional iterative closest point algorithm (ICPA), which requires a high initial position of point cloud and improves the speed and accuracy of point cloud registration, a new registration method is proposed in ...
Ruiyang Sun, Enzhong Zhang, Deqiang Mu, Shijun Ji, Ziqiang Zhang, Hongwei Liu, Zheng Fu   +6 more
doaj   +1 more source

Segmentation-based multi-scale edge extraction to measure the persistence of features in unorganized point clouds [PDF]

, 2017
Edge extraction has attracted a lot of attention in computer vision. The accuracy of extracting edges in point clouds can be a significant asset for a variety of engineering scenarios. To address these issues, we propose a segmentation-based multi-scale
Bazazian, Dena, Casas Pla, Josep Ramon, Ruiz Hidalgo, Javier   +2 more
core   +1 more source

Removal of Polyphenols from Wine Sludge Using Cloud Point Extraction [PDF]

Journal of the Air & Waste Management Association, 2010
Cloud point extraction (CPE), a promising and simple technique for the separation of organic compounds using surfactants (Genapol X-080 [oligoethylene glycol monoalkyl ether] and PEG 8000 [polyethylene glycol with molecular weight of 8000]), was used to recover polyphenols from wine sludge (wine production waste).
Arhontoula, Chatzilazarou, Evangelos, Katsoyannos, Olga, Gortzi, Stavros, Lalas, Yiannis, Paraskevopoulos, Euthalia, Dourtoglou, John, Tsaknis   +6 more
openaire   +2 more sources

AUTOMATIC EXTRACTION OF ROCK JOINTS FROM LASER SCANNED DATA BY MOVING LEAST SQUARES METHOD AND FUZZY K-MEANS CLUSTERING [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012
Recent development of laser scanning device increased the capability of representing rock outcrop in a very high resolution. Accurate 3D point cloud model with rock joint information can help geologist to estimate stability of rock slope on-site or off ...
S. Oh, H. D. Park, Y. D. Jo
doaj   +1 more source

An Efficient Voxel-Based Segmentation Algorithm Based on Hierarchical Clustering to Extract LIDAR Power Equipment Data in Transformer Substations

IEEE Access, 2020
Light detection and ranging (LIDAR) scanning is a common method of substation scene modeling that extracts point clouds of electrical equipment from the point cloud scene of a substation.
Jianlong Guo, Weixia Feng, Jiang Xue, Shan Xiong, Tengfei Hao, Ruiheng Li, Huben Mao   +6 more
doaj   +1 more source

Variational Level-Set Detection of Local Isosurfaces from Unstructured Point-based Volume Data [PDF]

, 2011
A standard approach for visualizing scalar volume data is the extraction of isosurfaces. The most efficient methods for surface extraction operate on regular grids. When data is given on unstructured point-based samples, regularization can be applied but
Linsen, Lars, Molchanov, Vladimir, Rosenthal, Paul   +2 more
core   +1 more source

3D Human Curve Skeleton Extraction Based on Solid-State LiDAR

IEEE Access
Human curve skeleton extraction is an important research topic in computer vision. In this paper, we propose a 3D human curve skeleton extraction method for point cloud, unlike the skeleton extraction methods in the literature that use an omnidirectional
Sidong Wu, Qingqing Yang, Liuquan Ren, Jiajia Liu, Jianying Yuan, Zhenbao Luo   +5 more
doaj   +1 more source

Extraction and Simplification of Building Façade Pieces from Mobile Laser Scanner Point Clouds for 3D Street View Services

ISPRS International Journal of Geo-Information, 2016
Extraction and analysis of building façades are key processes in the three-dimensional (3D) building reconstruction and realistic geometrical modeling of the urban environment, which includes many applications, such as smart city management, autonomous ...
Yan Li, Qingwu Hu, Meng Wu, Jianming Liu, Xuan Wu   +4 more
doaj   +1 more source

3D Point Capsule Networks [PDF]

, 2018
In this paper, we propose 3D point-capsule networks, an auto-encoder designed to process sparse 3D point clouds while preserving spatial arrangements of the input data.
Birdal, Tolga, Deng, Haowen, Tombari, Federico, Zhao, Yongheng   +3 more
core   +2 more sources