Calibration of the projector with fixed pattern and large distortion lens in a structured light system

Xingdou Fu, Zuofu Wang, Hiroshi Kawasaki, Ryusuke Sagawa, Ryo Furukawa

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

3 被引用数 (Scopus)

抄録

The most critical factor affects accuracy of a Structured Light System (SLS) is calibration. Camera calibration is easy to complete because of its extensive study. To simplify projector calibration, previous wor models the projector as an inverse camera and tries to build similar 3D-2D mapping data for projector calibration. Achieved mapping data is directly fed to some classic two-step camera calibration methods. When projector comes with a large distortion lens, this kind of methods will fail because their first steps use closed-form solution to calculate initial guess for optimization in next steps. We proposed a new method to calibrate the projector by removing its distortion first. Because projector cannot “see” anything, not like camera case, constraints such as “straight lines remain straight” working just on 2D image is invalid for distortion estimation. With 3D-2D mapping data, the estimation will involve several extra unknowns into a non-linear optimization. We use partial mapping data whose 2D points in a “small central area” of projector pattern image to acquire an initial guess for those unknowns, and then use all mapping data to refine them and estimate distortion parameters. Experiments show our method can still calibrate the projector when classic methods fail.

本文言語英語
ホスト出版物のタイトルProceedings of the 13th IAPR International Conference on Machine Vision Applications, MVA 2013
出版社MVA Organization
ページ222-225
ページ数4
ISBN(印刷版)9784901122139
出版ステータス出版済み - 2013
外部発表はい
イベント13th IAPR International Conference on Machine Vision Applications, MVA 2013 - Kyoto, 日本
継続期間: 5 20 20135 23 2013

出版物シリーズ

名前Proceedings of the 13th IAPR International Conference on Machine Vision Applications, MVA 2013

会議

会議13th IAPR International Conference on Machine Vision Applications, MVA 2013
国/地域日本
CityKyoto
Period5/20/135/23/13

All Science Journal Classification (ASJC) codes

  • コンピュータ ビジョンおよびパターン認識
  • コンピュータ サイエンスの応用

フィンガープリント

「Calibration of the projector with fixed pattern and large distortion lens in a structured light system」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル