To main content

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

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

Category
Conference lecture and academic presentation
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.
Language
English
Affiliation
  • SINTEF Digital / Smart Sensor Systems
Presented at
Imaging and Applied Optics 2018 (
Place
Orlando
Date
24.06.2018 - 27.06.2018
Organizer
Optical Society of America
Year
2018