Adapting Intensity Degradation to Enhance Fisheye Images Shot Inside Cup-Shaped Objects

  • Chuang-Jan Chang
  • Chang-Min Cheng
  • Tsung-Kai Chou
  • Shu-Lin Hwang
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 234)

Abstract

This chapter surveys the imaging properties inside cup-shaped objects. AOI is rarely discussed in this topic since the normally applied camera spans limited view angle and fails to capture images clearly if objects are inspected with ROI to a larger depth. Oppositely, fisheye cameras are a major issue, due to the inherently enormous scales of the focusing depth and the spanning view angle. Accordingly, closely placing a fisheye camera directly toward the bottom of a cup-shaped object, an exposure can cover the whole internal, including both the bottom and the sidewall. Through simple experimental implementation, this chapter surveyed the involved overall radial intensity degradation and the geometrically deformation profiles. The concluded photonic and morphological models are based to enhance the imaging fidelity and adapted to develop advanced images processing technologies.

Keywords

Cup-shaped object Fisheye camera Intensity degradation 

References

  1. 1.
    Chang C-J (2002) Computer vision models of fisheye images and the 3D metrology. Doctoral dissertation, Graduate Institute of Electrical Engineering, National Taiwan University, TaipeiGoogle Scholar
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    Lai S-H, Fu C-W, Chang S (1992) A generalized depth estimation algorithm with a single image. IEEE Trans Pattern Anal Mach Intell 14:405–411CrossRefGoogle Scholar
  3. 3.
    Yao L, Zhang W, JunliLian (2004) “Application of AOI system in PCB”, test & measurement technologiesGoogle Scholar
  4. 4.
    Yang S-Y (2010) Imaging technologies to the inner surface of an opaque paper cup. Master dissertation, Department of Electronical Engineering, Ming Chi University of Technology, TaipeiGoogle Scholar

Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Chuang-Jan Chang
    • 1
  • Chang-Min Cheng
    • 1
  • Tsung-Kai Chou
    • 1
  • Shu-Lin Hwang
    • 1
  1. 1.Department of Electronic EngineeringMing-Chi University of TechnologyTaishanTaiwan

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