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Updated: Feb 19, 2026

High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques

High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques

Published on: December 3, 2013

Single-Shot Dense Depth Sensing with Color Sequence Coded Fringe Pattern.

Fu Li¹, Baoyu Zhang², Guangming Shi³

¹School of Electronic Engineering, Xidian University, Xi'an 710071, China. fuli@mail.xidian.edu.cn.

Sensors (Basel, Switzerland)

|November 9, 2017

Summary

This summary is machine-generated.

This study introduces a novel color sequence coded fringe depth sensing method for dynamic scenes. It achieves higher precision depth mapping by overcoming phase unwrapping challenges, outperforming existing technologies.

Keywords:

depth sensing phase unwrapping structured light illumination

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Area of Science:

Computer Vision
Optical Metrology
3D Sensing

Background:

Structured light methods are crucial for dense depth map acquisition in dynamic scenes.
Phase-based methods often struggle with phase unwrapping, limiting accuracy.
Existing depth sensing technologies like Kinect and Time-of-Flight (ToF) cameras have limitations in precision.

Purpose of the Study:

To propose a novel color sequence coded fringe depth sensing method.
To address and overcome the phase unwrapping problem in phase-based depth sensing.
To enhance the precision and quality of depth maps for dynamic scenes.

Main Methods:

A single-shot structured light approach using color-encoded De Bruijn sequences.
Embedding color-coded sequence information into phase information across multiple channels.
Utilizing channel overlay for improved phase intensity and precise phase estimation.
Employing wrapped phase period for accurate sequence decoding and period order determination.

Main Results:

The proposed method successfully embeds color-coded sequences into phase information.
Channel overlay significantly improves phase intensity quality, leading to precise phase estimation.
The method achieves accurate period order determination through sequence decoding.
Experimental results show superior depth precision compared to Kinect and higher-resolution ToF cameras.

Conclusions:

The color sequence coded fringe depth sensing method effectively resolves phase unwrapping issues.
This approach offers enhanced precision for depth map generation in dynamic environments.
The method presents a significant advancement over current depth sensing technologies.