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Related Experiment Video

Updated: Apr 12, 2026

Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients

Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients

Published on: March 29, 2022

Binocular vision measurement using Dammann grating.

Shengbin Wei, Shaoqing Wang, Changhe Zhou

|May 14, 2015

Summary

This summary is machine-generated.

This study introduces a novel 3D profilometry system using a binocular camera and Dammann grating. The system achieves accurate 3D reconstruction with a low-cost, compact apparatus.

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Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition

Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition

Published on: July 21, 2020

Area of Science:

Optics and Photonics
Computer Vision
Metrology

Background:

3D profilometry is crucial for various applications, but existing methods often face limitations in cost, size, or accuracy.
Dammann gratings offer precise light manipulation capabilities, yet their integration into 3D profilometry systems requires novel approaches.

Purpose of the Study:

To develop a novel, low-cost, and compact 3D profilometry system.
To introduce a new 'ray constraint' for enhanced binocular matching in 3D reconstruction.
To demonstrate the system's capability in reconstructing complex 3D models.

Main Methods:

Utilized a binocular camera system combined with a 64x64 Dammann grating to generate a regular square laser array.
Implemented a novel 'ray constraint' for robust binocular matching, leveraging the grating's light-splitting properties.
Employed triangulation based on successful binocular matching to generate accurate point clouds, minimizing outliers.

Main Results:

Achieved outlier-free point cloud generation through the proposed binocular matching method.
Developed a compact experimental apparatus weighing under 170g and measuring less than 14cm.
Successfully reconstructed a complex 3D model of an Apollo statue using over 150,000 points under indoor lighting.

Conclusions:

The proposed 3D profilometry system offers a practical solution with advantages of low cost, low power consumption, and small size.
The novel ray constraint significantly improves binocular matching accuracy for 3D reconstruction.
The system demonstrates high potential for diverse practical applications requiring efficient 3D scanning.