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Three-dimensional vision from a multisensing mechanism.

Jindong Tian1, Xiang Peng

  • 1Institute of Optoelectronics, Shenzhen University, Key Laboratory of Optoelectronic Devices and Systems of Education Ministry, China. jindt@szu.edu.cn

Applied Optics
|April 28, 2006
PubMed
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This study presents a novel 3D sensing approach for complex object surfaces. By combining point-array and fringe encoding, it achieves accurate 3D vision and range imaging for arbitrary shapes.

Area of Science:

  • Optics and Photonics
  • Computer Vision
  • Metrology

Background:

  • Accurate three-dimensional (3D) surface sensing is crucial for various applications.
  • Existing 3D sensing methods often struggle with objects of arbitrary geometric complexity.

Purpose of the Study:

  • To develop a robust approach for sensing the 3D surface of objects with arbitrary geometric shapes.
  • To integrate two distinct 3D sensing mechanisms for enhanced accuracy and applicability.

Main Methods:

  • A hybrid 3D sensing approach combining point-array encoding (affine transformation) and fringe encoding (phase mapping).
  • Development of a mathematical model for 3D vision, utilizing point-array encoding to determine fringe orders.
  • Creation of a control-vertex mesh with absolute 3D coordinates.

Related Experiment Videos

  • Phase evaluation and unwrapping guided by the control-vertex mesh for absolute phase mapping and range image generation.

    • Main Results:

    • Successful generation of an absolute phase map for the test object.
    • Accurate creation of a corresponding range image.
    • Demonstration of theoretical predictions through computer simulations and experimental validation.

    Conclusions:

    • The proposed hybrid 3D sensing approach effectively captures the surfaces of arbitrarily shaped objects.
    • The integration of point-array and fringe encoding provides a reliable method for 3D vision and range imaging.
    • The developed mathematical model and methodology are validated by simulation and experimental results.