A user-centered side silhouette generation system for sedan cars based on shape templates

Erkan Gunpinar; Salih Ertug Ovur; Serkan Gunpinar

doi:10.1007/s11081-018-9410-9

A user-centered side silhouette generation system for sedan cars based on shape templates

Erkan Gunpinar^*, Salih Ertug Ovur, Serkan Gunpinar

^*Corresponding author for this work

Department of Mechanical Engineering

Istanbul Technical University

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

A tool for the generation of side silhouettes for sedan cars is developed in this work; this enables ordinary people to produce personalized silhouettes that they prefer. Multiple silhouettes are collected from different car brands and analyzed in an off-line step. The silhouette is partitioned into nine characteristic lines, each of which is represented by either quadratic or cubic Bezier curves. Furthermore, geometric properties, such as geometric constraints and lower/upper bounds for the characteristic line dimensions, are determined. Next, a characteristic line is sampled via a spatial simulated annealing approach, while minimizing the Audze–Eglais potential energy between the sampled characteristic lines generated. These samples are called line templates or shape templates. A car side silhouette is encoded by a sequence of parameters, such as characteristic line lengths and heights and line template indices (i.e., 21 parameters in total). Once the values for these parameters are set, the silhouette can be generated. A user interface is provided for users to develop personalized car side silhouettes. According to the user study performed in this work, the developed tool enables users to obtain more desired/preferred silhouette(s) compared to those obtained using an interactive genetic algorithm.

Original language	English
Pages (from-to)	683-723
Number of pages	41
Journal	Optimization and Engineering
Volume	20
Issue number	3
DOIs	https://doi.org/10.1007/s11081-018-9410-9
Publication status	Published - 15 Sept 2019

Bibliographical note

Publisher Copyright:
© 2018, Springer Science+Business Media, LLC, part of Springer Nature.

Funding

This study was funded by The Scientific and Technological Research Council of Turkey (Project Number: 315M077). Acknowledgements The authors would like to thank Professor Ralph Martin for his helpful remarks, the Scientific and Technological Research Council of Turkey for supporting this research (Project Number: 315M077) and the RWTH Computer Graphics Group for making the OpenFlipper framework available.

Funders	Funder number
RWTH Computer Graphics
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu	315M077

Keywords

Car side silhouette
Computer-aided design
Shape sampling
Shape templates
User-centered design

Access to Document

10.1007/s11081-018-9410-9

Cite this

@article{b203548cceb344289586db7171f47eb6,

title = "A user-centered side silhouette generation system for sedan cars based on shape templates",

abstract = "A tool for the generation of side silhouettes for sedan cars is developed in this work; this enables ordinary people to produce personalized silhouettes that they prefer. Multiple silhouettes are collected from different car brands and analyzed in an off-line step. The silhouette is partitioned into nine characteristic lines, each of which is represented by either quadratic or cubic Bezier curves. Furthermore, geometric properties, such as geometric constraints and lower/upper bounds for the characteristic line dimensions, are determined. Next, a characteristic line is sampled via a spatial simulated annealing approach, while minimizing the Audze–Eglais potential energy between the sampled characteristic lines generated. These samples are called line templates or shape templates. A car side silhouette is encoded by a sequence of parameters, such as characteristic line lengths and heights and line template indices (i.e., 21 parameters in total). Once the values for these parameters are set, the silhouette can be generated. A user interface is provided for users to develop personalized car side silhouettes. According to the user study performed in this work, the developed tool enables users to obtain more desired/preferred silhouette(s) compared to those obtained using an interactive genetic algorithm.",

keywords = "Car side silhouette, Computer-aided design, Shape sampling, Shape templates, User-centered design",

author = "Erkan Gunpinar and Ovur, {Salih Ertug} and Serkan Gunpinar",

note = "Publisher Copyright: {\textcopyright} 2018, Springer Science+Business Media, LLC, part of Springer Nature.",

year = "2019",

month = sep,

day = "15",

doi = "10.1007/s11081-018-9410-9",

language = "English",

volume = "20",

pages = "683--723",

journal = "Optimization and Engineering",

issn = "1389-4420",

publisher = "Springer Netherlands",

number = "3",

}

TY - JOUR

T1 - A user-centered side silhouette generation system for sedan cars based on shape templates

AU - Gunpinar, Erkan

AU - Ovur, Salih Ertug

AU - Gunpinar, Serkan

PY - 2019/9/15

Y1 - 2019/9/15

N2 - A tool for the generation of side silhouettes for sedan cars is developed in this work; this enables ordinary people to produce personalized silhouettes that they prefer. Multiple silhouettes are collected from different car brands and analyzed in an off-line step. The silhouette is partitioned into nine characteristic lines, each of which is represented by either quadratic or cubic Bezier curves. Furthermore, geometric properties, such as geometric constraints and lower/upper bounds for the characteristic line dimensions, are determined. Next, a characteristic line is sampled via a spatial simulated annealing approach, while minimizing the Audze–Eglais potential energy between the sampled characteristic lines generated. These samples are called line templates or shape templates. A car side silhouette is encoded by a sequence of parameters, such as characteristic line lengths and heights and line template indices (i.e., 21 parameters in total). Once the values for these parameters are set, the silhouette can be generated. A user interface is provided for users to develop personalized car side silhouettes. According to the user study performed in this work, the developed tool enables users to obtain more desired/preferred silhouette(s) compared to those obtained using an interactive genetic algorithm.

AB - A tool for the generation of side silhouettes for sedan cars is developed in this work; this enables ordinary people to produce personalized silhouettes that they prefer. Multiple silhouettes are collected from different car brands and analyzed in an off-line step. The silhouette is partitioned into nine characteristic lines, each of which is represented by either quadratic or cubic Bezier curves. Furthermore, geometric properties, such as geometric constraints and lower/upper bounds for the characteristic line dimensions, are determined. Next, a characteristic line is sampled via a spatial simulated annealing approach, while minimizing the Audze–Eglais potential energy between the sampled characteristic lines generated. These samples are called line templates or shape templates. A car side silhouette is encoded by a sequence of parameters, such as characteristic line lengths and heights and line template indices (i.e., 21 parameters in total). Once the values for these parameters are set, the silhouette can be generated. A user interface is provided for users to develop personalized car side silhouettes. According to the user study performed in this work, the developed tool enables users to obtain more desired/preferred silhouette(s) compared to those obtained using an interactive genetic algorithm.

KW - Car side silhouette

KW - Computer-aided design

KW - Shape sampling

KW - Shape templates

KW - User-centered design

UR - http://www.scopus.com/inward/record.url?scp=85057168197&partnerID=8YFLogxK

U2 - 10.1007/s11081-018-9410-9

DO - 10.1007/s11081-018-9410-9

M3 - Article

AN - SCOPUS:85057168197

SN - 1389-4420

VL - 20

SP - 683

EP - 723

JO - Optimization and Engineering

JF - Optimization and Engineering

IS - 3

ER -

A user-centered side silhouette generation system for sedan cars based on shape templates

Abstract

Bibliographical note

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Cite this