Normal-Based Bas-Relief Modelling via Near-Lighting Photometric Stereo

M. WEI, Z. SONG, Y. NIE, J. WU, Z. JI, Y. GUO, H. XIE, J. WANG, F. L. Wang

Research output: Journal PublicationsJournal Article (refereed)

Abstract

We present a near-lighting photometric stereo (NL-PS) system to produce digital bas-reliefs from a physical object (set) directly. Unlike both the 2D image and 3D model-based modelling methods that require complicated interactions and transformations, the technique using NL-PS is easy to use with cost-effective hardware, providing users with a trade-off between abstract and representation when creating bas-reliefs. Our algorithm consists of two steps: normal map acquisition and constrained 3D reconstruction. First, we introduce a lighting model, named the quasi-point lighting model (QPLM), and provide a two-step calibration solution in our NL-PS system to generate a dense normal map. Second, we filter the normal map into a detail layer and a structure layer, and formulate detail- or structure-preserving bas-relief modelling as a constrained surface reconstruction problem of solving a sparse linear system. The main contribution is a WYSIWYG (i.e. what you see is what you get) way of building new solvers that produces multi-style bas-reliefs with their geometric structures and/or details preserved. The performance of our approach is experimentally validated via comparisons with the state-of-the-art methods.

Original languageEnglish
JournalComputer Graphics Forum
DOIs
Publication statusE-pub ahead of print - 5 Jul 2019
Externally publishedYes

Fingerprint

Lighting
Surface reconstruction
Linear systems
Calibration
Hardware
Costs

Keywords

  • compression algorithms
  • computational geometry
  • curves and surfaces
  • modelling
  • Computing methodologies → Shape analysis

Cite this

WEI, M. ; SONG, Z. ; NIE, Y. ; WU, J. ; JI, Z. ; GUO, Y. ; XIE, H. ; WANG, J. ; Wang, F. L. / Normal-Based Bas-Relief Modelling via Near-Lighting Photometric Stereo. In: Computer Graphics Forum. 2019.
@article{83f021e72c0b44ccb9c553f2620c07e9,
title = "Normal-Based Bas-Relief Modelling via Near-Lighting Photometric Stereo",
abstract = "We present a near-lighting photometric stereo (NL-PS) system to produce digital bas-reliefs from a physical object (set) directly. Unlike both the 2D image and 3D model-based modelling methods that require complicated interactions and transformations, the technique using NL-PS is easy to use with cost-effective hardware, providing users with a trade-off between abstract and representation when creating bas-reliefs. Our algorithm consists of two steps: normal map acquisition and constrained 3D reconstruction. First, we introduce a lighting model, named the quasi-point lighting model (QPLM), and provide a two-step calibration solution in our NL-PS system to generate a dense normal map. Second, we filter the normal map into a detail layer and a structure layer, and formulate detail- or structure-preserving bas-relief modelling as a constrained surface reconstruction problem of solving a sparse linear system. The main contribution is a WYSIWYG (i.e. what you see is what you get) way of building new solvers that produces multi-style bas-reliefs with their geometric structures and/or details preserved. The performance of our approach is experimentally validated via comparisons with the state-of-the-art methods.",
keywords = "compression algorithms, computational geometry, curves and surfaces, modelling, Computing methodologies → Shape analysis",
author = "M. WEI and Z. SONG and Y. NIE and J. WU and Z. JI and Y. GUO and H. XIE and J. WANG and Wang, {F. L.}",
year = "2019",
month = "7",
day = "5",
doi = "10.1111/cgf.13754",
language = "English",
journal = "Computer Graphics Forum",
issn = "0167-7055",
publisher = "Wiley-Blackwell Publishing Ltd",

}

Normal-Based Bas-Relief Modelling via Near-Lighting Photometric Stereo. / WEI, M.; SONG, Z.; NIE, Y.; WU, J.; JI, Z.; GUO, Y.; XIE, H.; WANG, J.; Wang, F. L.

In: Computer Graphics Forum, 05.07.2019.

Research output: Journal PublicationsJournal Article (refereed)

TY - JOUR

T1 - Normal-Based Bas-Relief Modelling via Near-Lighting Photometric Stereo

AU - WEI, M.

AU - SONG, Z.

AU - NIE, Y.

AU - WU, J.

AU - JI, Z.

AU - GUO, Y.

AU - XIE, H.

AU - WANG, J.

AU - Wang, F. L.

PY - 2019/7/5

Y1 - 2019/7/5

N2 - We present a near-lighting photometric stereo (NL-PS) system to produce digital bas-reliefs from a physical object (set) directly. Unlike both the 2D image and 3D model-based modelling methods that require complicated interactions and transformations, the technique using NL-PS is easy to use with cost-effective hardware, providing users with a trade-off between abstract and representation when creating bas-reliefs. Our algorithm consists of two steps: normal map acquisition and constrained 3D reconstruction. First, we introduce a lighting model, named the quasi-point lighting model (QPLM), and provide a two-step calibration solution in our NL-PS system to generate a dense normal map. Second, we filter the normal map into a detail layer and a structure layer, and formulate detail- or structure-preserving bas-relief modelling as a constrained surface reconstruction problem of solving a sparse linear system. The main contribution is a WYSIWYG (i.e. what you see is what you get) way of building new solvers that produces multi-style bas-reliefs with their geometric structures and/or details preserved. The performance of our approach is experimentally validated via comparisons with the state-of-the-art methods.

AB - We present a near-lighting photometric stereo (NL-PS) system to produce digital bas-reliefs from a physical object (set) directly. Unlike both the 2D image and 3D model-based modelling methods that require complicated interactions and transformations, the technique using NL-PS is easy to use with cost-effective hardware, providing users with a trade-off between abstract and representation when creating bas-reliefs. Our algorithm consists of two steps: normal map acquisition and constrained 3D reconstruction. First, we introduce a lighting model, named the quasi-point lighting model (QPLM), and provide a two-step calibration solution in our NL-PS system to generate a dense normal map. Second, we filter the normal map into a detail layer and a structure layer, and formulate detail- or structure-preserving bas-relief modelling as a constrained surface reconstruction problem of solving a sparse linear system. The main contribution is a WYSIWYG (i.e. what you see is what you get) way of building new solvers that produces multi-style bas-reliefs with their geometric structures and/or details preserved. The performance of our approach is experimentally validated via comparisons with the state-of-the-art methods.

KW - compression algorithms

KW - computational geometry

KW - curves and surfaces

KW - modelling

KW - Computing methodologies → Shape analysis

UR - http://www.scopus.com/inward/record.url?scp=85068516765&partnerID=8YFLogxK

U2 - 10.1111/cgf.13754

DO - 10.1111/cgf.13754

M3 - Journal Article (refereed)

AN - SCOPUS:85068516765

JO - Computer Graphics Forum

JF - Computer Graphics Forum

SN - 0167-7055

ER -