Linear Photometric Stereo using Close Lighting Images based on Intensity Differential

Zennichiro Sasaki, Fumihiko Sakaue, Jun Sato

2017

Abstract

In this paper, we propose a new linear photometric stereo method from images taken under close light sources. When an images are taken under close light source, we can obtain not only surface normal but also shape from the images. However, relationship between observed intensity and object shape is not linear, and then, we have to use non-linear optimization to estimate object shape. In order to estimate object shape by just linear estimation, we focus not only direct observed intensities, but also differentials of the intensities in this paper. By using the set of observed intensity and its differentials, we can represent relationship between object shape and intensities linearly. By this linear representation, linear estimation of object shape achieved even if obtained images are taken under close light sources. Experimental results show our proposed method can reconstruct object shape by only linear estimation efficiently and accurately.

Paper Citation

in Harvard Style

Sasaki Z., Sakaue F. and Sato J. (2017). Linear Photometric Stereo using Close Lighting Images based on Intensity Differential . In Proceedings of the 12th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications - Volume 4: VISAPP, (VISIGRAPP 2017) ISBN 978-989-758-225-7, pages 623-630. DOI: 10.5220/0006265506230630

in Bibtex Style

@conference{visapp17,
author={Zennichiro Sasaki and Fumihiko Sakaue and Jun Sato},
title={Linear Photometric Stereo using Close Lighting Images based on Intensity Differential},
booktitle={Proceedings of the 12th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications - Volume 4: VISAPP, (VISIGRAPP 2017)},
year={2017},
pages={623-630},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0006265506230630},
isbn={978-989-758-225-7},
}

in EndNote Style

TY - CONF
JO - Proceedings of the 12th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications - Volume 4: VISAPP, (VISIGRAPP 2017)
TI - Linear Photometric Stereo using Close Lighting Images based on Intensity Differential
SN - 978-989-758-225-7
AU - Sasaki Z.
AU - Sakaue F.
AU - Sato J.
PY - 2017
SP - 623
EP - 630
DO - 10.5220/0006265506230630