A Non-Structural Representation Scheme for Articulated Shapes

Download

index.pdf

Date

2018-10-01

Author

Genctav, Asli
Tarı, Zehra Sibel

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

181
views

133
downloads

Articulated shapes are successfully represented by structural representations which are organized in the form of graphs of shape components. We present an alternative representation scheme which is equally powerful but does not require explicit modeling or discovery of structural relations. The key element in our scheme is a novel multi scale pixel-based distinctness measure which implicitly quantifies how rare a particular pixel is in terms of its geometry with respect to all pixels of the shape. The spatial distribution of the distinctness yields a partitioning of the shape into a set of regions. The proposed representation is a collection of size normalized probability distribution of the distinctness over regions over shape dependent scales. We test the proposed representation on a clustering task.

Subject Keywords

2D shapes, Shape representation, Robust Principal Component Analysis (RPCA), t-Distributed Stochastic Neighbor Embedding (t-SNE)

URI

https://hdl.handle.net/11511/32698

Journal

JOURNAL OF IMAGING

DOI

https://doi.org/10.3390/jimaging4100115

Collections

Department of Computer Engineering, Article

Suggestions

OpenMETU
Core

A compact shape descriptor based on the beam angle statistics Arica, N; Yarman Vural, Fatoş Tunay (2003-01-01) In this study, we propose a compact shape descriptor, which represents the 2-D shape information by 1-D functions. For this purpose a two-step method is proposed. In the first step, the 2-D shape information is mapped into 1-D moment functions without using a predefined resolution. The mapping is based on the beams, which are originated from a boundary point, connecting that point with the rest of the points on the boundary. At each point, the angle between a pair of beams is taken as a random variable to d...
A Navier-Stokes Solver for Compressible Turbulent Flows on Quadtree and Octree Based Cartesian Grids Kara, E.; Kutlar, A. İ.; Aksel, M. H.; null, null (Academic World Research, 2019-3-1) Cartesian grids represent a special extent in unstructured grid literature. They employ chiefly created algorithms to produce automatic meshing while simulating flows around complex geometries without considering shape of the bodies. In this article, firstly, it is intended to produce regionally developed Cartesian meshes for two dimensional and three dimensional, disordered geometries to provide solutions hierarchically. Secondly, accurate results for turbulent flows are developed by finite volume solv...
A Comparative Study on Polygonal Mesh Simplification Algorithms Yirci, Murat; Ulusoy, İlkay (2009-01-01) Polygonal meshes are a common way of representing three dimensional surface models in many different areas of computer graphics and geometry processing. However, with the evolution of the technology, polygonal models are becoming more and more complex. As the complexity of the models increase, the visual approximation to the real world objects get better but there is a trade-off between the cost of processing these models and better visual approximation. In order to reduce this cost, the number of polygons ...
A Three dimensional mixed formulation nonlinear frame finite element based on hu-washizu functional Soydaş, Ozan; Sarıtaş, Afşin; Department of Civil Engineering (2013) A three dimensional nonlinear frame finite element is presented in this analytical study by utilizing Hu-Washizu principle with three fields of displacement, strain and stress in the variational form. Timoshenko beam theory is extended to three dimensions in order to derive strains from the displacement field. The finite element approximation for the beam uses shape functions for section forces that satisfy equilibrium and discontinous section deformations along the beam. Nonlinear analyses are performed by...
A LINEAR MATHEMATICAL-MODEL FOR THE SEISMIC INPLANE BEHAVIOR OF BRICK MASONRY WALLS .1. THEORETICAL CONSIDERATIONS Mengi, Yalçın; Sucuoğlu, Haluk; McNiven, Hugh (Wiley, 1984-01-01) In this study two mathematical models are presented for the linear dynamic behaviour of masonry walls. The study is completed in three stages: experimental observations, selection of a mathematical model and the determination of model parameters through optimization analysis. In the present paper (Part 1) the theoretical analysis used in the development of the mathematical models is presented. Part 2 is devoted to the optimization analysis. Evaluation of the experimental data, which is described in detail ...

Citation Formats

A. Genctav and Z. S. Tarı, “A Non-Structural Representation Scheme for Articulated Shapes,” JOURNAL OF IMAGING, pp. 0–0, 2018, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/32698.