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Adaptive Multi-Frequency Phase Stepping for Optimal 3D Depth Reconstruction

Abstract

This paper describes a 3D measurement algorithm based on Multi-Frequency Phase Stepping, using a single period pattern and a higher frequency pattern. An experimentally verified analytical expression for depth precision enables adaptive selection of the high frequency. The algorithm has several advantages compared with Gray Code Phase Stepping (GCPS): In high signal situations, depth precision improves. In low signal situations, Gray Coding errors are avoided. Additionally, robust estimates of measurement precision will be available on a per pixel basis.

Category

Conference poster

Language

English

Affiliation

  • SINTEF Digital / Smart Sensors and Microsystems

Presented at

Imaging and Applied Optics 2018 (

Place

Orlando

Date

25.06.2018 - 28.06.2018

Organizer

Optical Society of America

Year

2018

View this publication at Norwegian Research Information Repository