Results 41 to 50 of about 2,841,987 (371)

Graph theoretical representation of atomic asymmetry and molecular chirality of benzenoids in two-dimensional space. [PDF]

PLoS ONE, 2014
In order to explore atomic asymmetry and molecular chirality in 2D space, benzenoids composed of 3 to 11 hexagons in 2D space were enumerated in our laboratory.
Tanfeng Zhao, Qingyou Zhang, Hailin Long, Lu Xu   +3 more
doaj   +1 more source

Automatic Registration of Point Clouds by Combining Local Shape Descriptor and G4PCS Algorithm

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
Registration is usually the first step for the usage of point cloud data. Registration of point clouds is crucial in numerous practical applications.
Wuyong Tao, Jingbin Liu, Dong Xu, Yanyang Xiao   +3 more
doaj   +1 more source

A 3D Shape Descriptor Based on Contour Clusters for Damaged Roof Detection Using Airborne LiDAR Point Clouds

Remote Sensing, 2016
The rapid and accurate assessment of building damage states using only post-event remote sensing data is critical when performing loss estimation in earthquake emergency response.
Meizhang He, Qing Zhu, Z. Du, Han Hu, Yulin Ding, Min Chen   +5 more
semanticscholar   +1 more source

Corners-based composite descriptor for shapes

, 2008
In this paper, a composite descriptor for shape retrieval is proposed. The composite descriptor is obtained based upon corner-points and shape region.
Lu, Guojun, Sajjanhar, Atul, Zhang, Dengsheng, Zhou, Wanlei   +3 more
core   +1 more source

Optimal ligand descriptor for pocket recognition based on the Beta-shape.

PLoS ONE, 2015
Structure-based virtual screening is one of the most important and common computational methods for the identification of predicted hit at the beginning of drug discovery.
Jae-Kwan Kim, Chung-In Won, Jehyun Cha, Kichun Lee, Deok-Soo Kim   +4 more
doaj   +1 more source

Microfilariae Classification Using Multiple Classifiers for Color and Shape Features

Open Engineering, 2016
This paper presents a multi-classifier approach for classifying microfilariae in 2-D images. A shape descriptor based on the quench function is described. This descriptor is represented as a feature vector that encodes the shape information.
AL-Tam Faroq, dos Anjos António, Pion Sébastien, Boussinesq Michel, Shahbazkia Hamid Reza   +4 more
doaj   +1 more source

Perceptually Motivated Shape Context Which Uses Shape Interiors

, 2012
In this paper, we identify some of the limitations of current-day shape matching techniques. We provide examples of how contour-based shape matching techniques cannot provide a good match for certain visually similar shapes.
Kakarala, Ramakrishna, Premachandran, Vittal   +1 more
core   +1 more source

From 2D to 3D: Component Description for Partial Matching of Point Clouds

IEEE Access, 2019
We present a method to compute the descriptor of components of point clouds, therefore, a novel component-oriented partial matching of point clouds is achieved based on the component descriptor.
Yuhe Zhang, Xiaoning Liu, Chunhui Li, Jiabei Hu, Guohua Geng, Shunli Zhang   +5 more
doaj   +1 more source

2-D shapes description by using features based on the differential turning angle scalogram [PDF]

, 2014
International audienceA 2-D shape description using the turning angle is presented 1 . This descriptor is based on a scalogram obtained from a progressive filtering of a planar closed contour.
Belloulata, Kamel, Kpalma, Kidiyo, Yang, Mingqiang   +2 more
core   +3 more sources

Local Geometry Inclusive Global Shape Representation

, 2017
Knowledge of shape geometry plays a pivotal role in many shape analysis applications. In this paper we introduce a local geometry-inclusive global representation of 3D shapes based on computation of the shortest quasi-geodesic paths between all possible ...
Bhandarkar, Suchendra M., Das, Somenath
core   +1 more source