Results 1 to 10 of about 20,905 (259)

An Effective 3D Shape Descriptor for Object Recognition with RGB-D Sensors [PDF]

Sensors, 2017
RGB-D sensors have been widely used in various areas of computer vision and graphics. A good descriptor will effectively improve the performance of operation.
Zhong Liu, Changchen Zhao, Xingming Wu, Weihai Chen   +3 more
doaj   +4 more sources

TOSD: A Hierarchical Object-Centric Descriptor Integrating Shape, Color, and Topology [PDF]

Sensors
This paper introduces a hierarchical object-centric descriptor framework called TOSD (Triplet Object-Centric Semantic Descriptor). The goal of this method is to overcome the limitations of existing pixel-based and global feature embedding approaches.
Jun-Hyeon Choi, Jeong-Won Pyo, Ye-Chan An, Tae-Yong Kuc   +3 more
doaj   +2 more sources

A compact shape descriptor for triangular surface meshes [PDF]

CAD Computer Aided Design, 2014
Zeyun Yu, Zhanheng Gao, Xiaoli Pang
exaly   +2 more sources

An anisotropic Chebyshev descriptor and its optimization for deformable shape correspondence

Computational Visual Media, 2023
Shape descriptors have recently gained popularity in shape matching, statistical shape modeling, etc. Their discriminative ability and efficiency play a decisive role in these tasks.
Shengjun Liu, Hongyan Liu, Wang Chen, Dong-Ming Yan, Ling Hu, Xinru Liu, Qinsong Li   +6 more
doaj   +1 more source

Nested Shape Descriptors [PDF]

2013 IEEE International Conference on Computer Vision, 2013
In this paper, we propose a new family of binary local feature descriptors called nested shape descriptors. These descriptors are constructed by pooling oriented gradients over a large geometric structure called the Hawaiian earring, which is constructed with a nested correlation structure that enables a new robust local distance function called the ...
Jeffrey Byrne, Jianbo Shi
openaire   +1 more source

3D shape retrieval based on Laplace operator and joint Bayesian model

Visual Informatics, 2020
Feature analysis plays a significant role in computer vision and computer graphics. In the task of shape retrieval, shape descriptor is indispensable.
Zihao Wang, Hongwei Lin
doaj   +1 more source

Enlacement and Interlacement Shape Descriptors [PDF]

, 2020
We propose a novel approach to characterize complex 2D shapes based on enlacement and interlacement directional spatial relations. This new relational concept allows to assess in a polar space how the concave parts of objects are intertwined following a set of directions.
Michaël Clément, Camille Kurtz, Laurent Wendling   +2 more
openaire   +2 more sources

Fourier Transform to Group Feature on Generated Coarser Contours for Fast 2D Shape Matching

IEEE Access, 2020
Fourier descriptors are classical global shape descriptors with high matching speed but low accuracy. To obtain higher accuracy, a novel framework for forming Fourier descriptors is proposed and named as MSFDGF (multiscale Fourier descriptor using group ...
Yan Zheng, Fanjie Meng, Jie Liu, Baolong Guo, Yang Song, Xuebing Zhang, Ling Wang   +6 more
doaj   +1 more source

3D Model Classification Based on Bayesian Classifier with AdaBoost

Discrete Dynamics in Nature and Society, 2021
With the exponential increasement of 3D models, 3D model classification is crucial to the effective management and retrieval of model database. Feature descriptor has important influence on 3D model classification.
Xue-Yao Gao, Kai-Peng Li, Chun-Xiang Zhang, Bo Yu   +3 more
doaj   +1 more source

Spherical harmonics coefficients for ligand-based virtual screening of cyclooxygenase inhibitors. [PDF]

PLoS ONE, 2011
Molecular descriptors are essential for many applications in computational chemistry, such as ligand-based similarity searching. Spherical harmonics have previously been suggested as comprehensive descriptors of molecular structure and properties.
Quan Wang, Kerstin Birod, Carlo Angioni, Sabine Grösch, Tim Geppert, Petra Schneider, Matthias Rupp, Gisbert Schneider   +7 more
doaj   +1 more source