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A Topology-Based Stereo Matching Method for One Shot 3D Measurement Using Coded Spot-Array Structured Light.

Junhui Mei1,2,3, Xiao Yang1,2, Zhenxin Wang1,2

  • 1School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.

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|October 13, 2021
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Summary
This summary is machine-generated.

This study introduces a novel topology-based stereo matching method for 3D measurement using coded structured light. The technique enables precise 3D reconstruction with a single image capture.

Keywords:
active stereosingle pattern projectionspot arraystereo matching

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Area of Science:

  • Computer Vision
  • Optical Metrology
  • 3D Reconstruction

Background:

  • Accurate 3D measurement is crucial for various applications.
  • Structured light techniques offer robust 3D reconstruction.
  • Existing methods often require multiple captures or complex calibration.

Purpose of the Study:

  • To propose a topology-based stereo matching method for 3D measurement.
  • To enable single-shot 3D reconstruction using coded structured light.
  • To address challenges of missing coded spots in structured light patterns.

Main Methods:

  • A coded spot-array structured light pattern with unique topological coding was designed.
  • Rectangle templates were used to locate encoded spots, even when missing.
  • An interpolation method was developed to reconstruct missing spots.

Main Results:

  • The proposed method achieved exact and unique decoding of each spot.
  • Successful establishment of stereo matching relations was demonstrated.
  • High-accuracy 3D reconstruction was achieved with a single-shot approach.

Conclusions:

  • The topology-based stereo matching method provides an effective solution for 3D measurement.
  • The technique is robust to missing spots and enables efficient single-shot reconstruction.
  • This method advances the field of structured light-based 3D measurement.