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Multimedia Tools and Applications

, Volume 71, Issue 1, pp 247–262 | Cite as

Optimizing image focus for 3D shape recovery through genetic algorithm

  • Ik-Hyun Lee
  • Muhammad Tariq Mahmood
  • Seong-O Shim
  • Tae-Sun ChoiEmail author
Article

Abstract

Three-dimensional information of objects is advantageous and widely used in multimedia systems and applications. Shape form focus (SFF) is a passive optical technique that reconstructs 3D shape of an object using a sequence of images with varying focus settings. In this paper, we propose an optimization of the focus measure. First, Wiener filter is applied for noise reduction from the image sequence. At the second stage, genetic algorithm (GA) is applied for focus measure optimization. GA finds the maximum focus measurement under a fitness criterion. Finally, 3D shape of the object is determined by maximizing focus measure along the optical direction. The proposed method is tested with image sequences of simulated and real objects. The performance of the proposed technique is analyzed through statistical criteria such as root mean square error (RMSE) and correlation. Comparative analysis shows the effectiveness of the proposed method.

Keywords

3D shape Shape from focus Genetic algorithm Optimization 

Notes

Acknowledgements

This research was supported by Basic Science Research Program through the National Research Foundation of Korea(NRF) funded by the Ministry of Education, Science and Technology(2012-0001344). This work (2012-0005542) was supported by the Mid-career Researcher Program through a National Research Foundation (NRF) grant funded by the Ministry of Education, Science and Technology (MEST), Korea.

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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Ik-Hyun Lee
    • 1
  • Muhammad Tariq Mahmood
    • 2
  • Seong-O Shim
    • 3
  • Tae-Sun Choi
    • 1
    Email author
  1. 1.School of Information and MechatronicsGwangju Institute of Science and TechnologyGwangjuSouth Korea
  2. 2.School of Computer Science and EngineeringKorea University of Technology and EducationChungnamSouth Korea
  3. 3.Plus Fountain Co., Ltd.R&D CenterSeoulSouth Korea

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