Results 21 to 30 of about 2,841,987 (371)

Fruit shape classification based on wavelet descriptor

open access: yes浙江大学学报. 农业与生命科学版, 2010
Shape is one of the most important features in fruit grading. A method for fruit shape classification based on the wavelet descriptor was proposed. Wavelet descriptor was extracted to describe the fruit shape from wavelet transform of the normalized ...
LIU Yang-long   +3 more
doaj   +1 more source

Shape descriptors for mode-shape recognition and model updating [PDF]

open access: yes, 2009
The most widely used method for comparing mode shapes from finite elements and experimental measurements is the Modal Assurance Criterion (MAC), which returns a single numerical value and carries no explicit information on shape features. New techniques,
Mares, C, Mottershead, JE, Wang, W
core   +1 more source

QSD quadratic shape descriptors. 2. Molecular docking using quadratic shape descriptors (QSDock) [PDF]

open access: yesProteins: Structure, Function, and Genetics, 2000
We present a new shape-based polynomial time algorithm for the rapid docking of rigid ligands into their macromolecular receptors. The method exploits molecular surface complementarity existing between a putative ligand and its receptor protein.
B B, Goldman, W T, Wipke
openaire   +2 more sources

An Application of Manifold Learning in Global Shape Descriptors

open access: yesAlgorithms, 2019
With the rapid expansion of applied 3D computational vision, shape descriptors have become increasingly important for a wide variety of applications and objects from molecules to planets.
Fereshteh S. Bashiri   +4 more
doaj   +1 more source

Multiscale fractal dimension applied to tactical analysis in football: A novel approach to evaluate the shapes of team organization on the pitch.

open access: yesPLoS ONE, 2021
The aim of this study was to evaluate different shape descriptors applied to images of polygons that represent the organization of football teams on the pitch.
Murilo José de Oliveira Bueno   +4 more
doaj   +1 more source

Learning Descriptor Networks for 3D Shape Synthesis and Analysis [PDF]

open access: yes2018 IEEE/CVF Conference on Computer Vision and Pattern Recognition, 2018
This paper proposes a 3D shape descriptor network, which is a deep convolutional energy-based model, for modeling volumetric shape patterns. The maximum likelihood training of the model follows an "analysis by synthesis" scheme and can be interpreted as ...
Jianwen Xie   +5 more
semanticscholar   +1 more source

Dynamic distance-based shape features for gait recognition [PDF]

open access: yes, 2014
We propose a novel skeleton-based approach to gait recognition using our Skeleton Variance Image. The core of our approach consists of employing the screened Poisson equation to construct a family of smooth distance functions associated with a given ...
Belyaev, Alexander   +2 more
core   +1 more source

Ekstraksi Fitur Berdasarkan Deskriptor Bentuk Dan Titik Salien Untuk Klasifikasi Citra Ikan Tuna [PDF]

open access: yes, 2016
. The manual classification of fish causes problems on accuracy and execution time. In the image of tuna, beside the shape feature, local features is also necessary to differentiate the types of fish especially which have a similar shape.
Arifin, A. Z. (Agus)   +2 more
core   +1 more source

A Weighted Fourier and Wavelet-Like Shape Descriptor Based on IDSC for Object Recognition

open access: yesSymmetry, 2019
This article presents an effective shape descriptor with a property of fast matching. This descriptor, called IDSC-wFW (a weighted Fourier and wavelet-like descriptor based on inner distance shape context), first rewrites shape histograms of IDSC ...
Yan Zheng, B. Guo, Cheng Li, Yunyi Yan
semanticscholar   +1 more source

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